taxonID	type	description	language	source
1662613EFFC9FFE8FF8AA1FCFA31F950.taxon	description	Figs 1 – 513	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFC9FFE8FF8AA1FCFA31F950.taxon	etymology	Etymology. Kinsey (1937) did not indicate the etymology of this genus name in the original description. The name Feron could come from either the Greek φέρω (phérō) or Latin fero, both of which are verbs meaning “ to carry ” in which case its gender would be neuter; it could alternatively come from Φηρῶν which is a mythological name of a centaur, in which case it would be masculine. The suffixes in the epithets of the original species described under the name Feron, correspond to a neuter word, thus it must refer to a verb and not to a noun. Here, all species names’ terminals have been changed to neuter when applicable.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFC9FFE8FF8AA1FCFA31F950.taxon	type_taxon	Type species: Feron verutum Kinsey, 1937 (according to the original description).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFC9FFE8FF8AA1FCFA31F950.taxon	description	Kinsey (1937) described this genus with six new Mexican species, Feron tibiale, F. tostum, F. uterinum, F. validum, F. verutum and F. vitreum, which induce crystalline galls on leaves of white oaks in the subgenus Quercus (section Quercus, subsection Leucomexicana; Denk et al. 2017, Manos & Hipp 2021). Kinsey (1937: 70) commented that Feron should include numerous species that had previously been assigned to Andricus and other Western Palearctic genera; in addition, two other genera, Dros and Druon, were described in the same paper and Kinsey mentioned that the limits of all three genera would be determined in a monographic revision of the entire group. However, this revision was never published. Moreover, Kinsey constantly compared his new Feron species with Andricus tecturnarum but never transferred that species to Feron; our phylogenetic study shows that A. tecturnarum falls within the genus Feron. According to Weld (1951; 1952 a), morphologically Feron closely resembles Andricus, and Weld (1951: 632) synonymized both genera. However, the original description of Feron does not mention several important characters that differentiate it from Andricus so for this reason, Feron is re-described below.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFC9FFE8FF8AA1FCFA31F950.taxon	diagnosis	Diagnosis. Feron has the lower face with two smooth or almost smooth areas between the clypeus and eye, the malar sulcus absent; gena broadened or not behind the eye in frontal view, toruli usually located in the upper half of the head, the antenna always with 11 – 12 flagellomeres, the notaulus is usually complete, the mesopleuron is smooth or with a few vertical carinae on the most posterodorsal part of the speculum or with weak longitudinal carinae anteriorly; the transscutal articulation is present; lateral propodeal carinae bent outwards, sometimes strongly; the prominent part of the ventral spine of the hypopygium relatively long, usually around 4.0 – 6.0 × as long as broad. According to these characters, Feron is similar to some sexual Andricus species. Andricus do not exhibit smooth areas on the lower face, toruli are always located at mid-height of the head, and the prominent part of the ventral spine of the hypopygium is usually shorter (around 2.0 – 3.5 × as long as broad). Exceptionally, Andricus with longer ventral spines of the hypopygium have lateral propodeal carinae subparallel or bent slightly outwards and the mesoscutum is completely smooth or partially delicately alutaceous; even in some sexual female Andricus the antenna has 13 flagellomeres. Biologically, an important character to differentiate Feron from Andricus is the galls: one group of Feron species induces pubescent, crystalline or conical galls with rigid extensions on leaves, while the galls of Andricus never form gregarious pubescent masses on leaves; also, other lineages of Feron species induce disc-shaped, often star-like, spangle galls on leaves, a morphology that never occurs in Andricus. A few sexual-generation Andricus species, for example, the Western Palearctic A. quercusramuli (Linnaeus, 1761), induce Feron - like pubescent galls but only on catkins; in addition, those sexual females differ from Feron in the absence of smooth areas on the lower face, the mesopleuron is uniformly and very delicately transversally striate and the prominent part of the ventral spine of the hypopygium is usually short. The galls of some Feron species are similar to those induced by Druon species, but in Druon galls are covered in softer, more wool-like pubescent compared to the more crystalline hairs on Feron galls. The adults of Druon differ from Feron by the mesopleuron striate, and the lower face is entirely sculptured without smooth areas. Finally, some species of Feron can resemble Dros, but in Dros the frons is completely smooth (always sculptured in Feron) and the galls are significantly different.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFC9FFE8FF8AA1FCFA31F950.taxon	description	Re-description. Females. Body yellowish to light brown, chestnut brown or dark brown, legs always lighter; antenna light brown to dark brown, with scape, pedicel and flagellomeres from F 1 until F 4 lighter than subsequent flagellomeres. Head trapezoid, rounded, slightly ovate or semiquadrangular, with sparse white setae, denser on lower face, 1.1 – 1.2 × as broad as high, slightly broader than mesosoma in small specimens in frontal view; 1.6 – 2.3 × as broad as long in dorsal view. Gena alutaceous-reticulate, not broadened or very slightly broadened behind eye in frontal view, narrower than the transverse diameter of the eye in lateral view. Malar space alutaceous-reticulate, with striae radiating from clypeus sometimes reaching the eye, malar sulcus absent; eye 1.7 – 6.1 × as high as the length of malar space. Inner margins of eyes parallel, converging, or slightly divergent. POL 1.3 – 3.0 × as long as OOL (longer in males), OOL 1.0 – 3.3 × as long as the diameter of lateral ocellus and slightly shorter to 2.0 × as long as LOL, all ocelli ovate, of the same size. Transfacial distance longer or slightly shorter than the height of eye (shorter in some sexual forms); toruli usually located in the upper half of head and then frons shorter than lower face, the diameter of antennal torulus 1.0 - 2.0 × as long as the distance between them, distance between torulus and eye around 1.0 – 1.5 × as long as diameter of torulus; lower face smooth or slightly alutaceous between clypeus and eye, glabrous or with sparse white setae; slightly elevated median area alutaceous to smooth, with a few setae. Clypeus trapezoid, rectangular or quadrangular, smooth, or delicately coriaceous or striate, glabrous or with a few long setae scattered all over; ventrally rounded, emarginate, with or without median incision; anterior tentorial pit small, rounded, indistinct, epistomal sulcus distinct, clypeo-pleurostomal line well impressed. Frons alutaceous-reticulate or imbricate; interocellar area and vertex alutaceous-reticulate, without striae or setae; area under central ocellus impressed, alutaceous; occiput, postocciput and postgena alutaceous-reticulate, with few setae; posterior tentorial pit large, elongated, area below impressed; occipital foramen as high as height of postgenal bridge; hypostomal carina emarginate, continuing into strong postgenal sulci which diverge strongly toward occipital foramen, postgenal bridge anteriorly slightly broader than occipital foramen. Antenna longer than head + mesosoma, with 11 – 12 flagellomeres (13 in males); pedicel longer than broad; F 1 1.5 – 2.6 × as long as pedicel and from equal with to 1.4 × as long as F 2; F 2 equal to or longer than F 3; all subsequent flagellomeres shorter, sometimes thicker; placodeal sensilla from F 2 to F 5 in females (in all flagellomeres in males); F 1 in males with a variable shape, sometimes 1.6 × as long as F 2. Mesosoma as long as high, with a few white setae along propleura. Pronotum smooth, glabrous or more or less pubescent laterally, foveolate or not along propleuron, laterally smooth or with delicate parallel striae in anteroposterior part; propleuron smooth, glabrous or setose. Mesoscutum as long as broad or slightly longer than broad (greatest width measured across mesoscutum level with base of tegulae), uniformly delicately coriaceous or alutaceous to rugose-reticulate, sometimes with smooth areas and punctures (smooth in some sexual forms). Notaulus complete or not, deep or shallow, posteriorly converging and usually broader than anteriorly, bottom smooth, glabrous; in most posterior section the distance between notauli shorter than distance between notaulus and side of mesoscutum. Anterior parallel line indistinct or distinct, impressed, smooth, glabrous, reaching at most 1 / 2 length of mesoscutum; parapsidal line indistinct or marked with broad smooth, glabrous stripe; median mesoscutal line absent or in the form of a short triangle; parascutal carina broad, reaching notaulus. Mesoscutellum ovate or trapezoid, longer than broad, broader at posterior end; disc of mesoscutellum uniformly rugoso-coriaceous, reticulate or smooth in central part, rugose in most posterior section and along sides, with some longitudinal rugae, overhanging metanotum. Mesoscutellar foveae present, divided by a rugose elevated central area or fused in the form of an anterior transverse impression, with smooth, glabrous bottom. Mesopleuron entirely smooth or with a few vertical carinae in most posterodorsal section, glabrous or with setae only along ventral edge; mesopleural triangle delicately coriaceous, glabrous or with white setae; dorsal and lateral axillar areas smooth, with or without dense setae; axillula with delicate parallel longitudinal striae; subaxillular bar smooth, glabrous, triangular, posteriorly as high as height of metanotal trough; metapleural sulcus reaching mesopleuron at half of its height, in some species slightly higher or lower, lower part of sulcus delimiting broad triangular coriaceous area; upper part of sulcus either distinct, separating smooth, glabrous area or indistinct. Metascutellum coriaceous or smooth, glabrous, as high as height of smooth, glabrous ventral impressed area; metanotal trough smooth, glabrous or with short setae; central propodeal area lyre-shaped, smooth, without or with only a few strong short longitudinal rugae; lateral propodeal carinae strong, broad and high, bent outwards in posterior 1 / 3; lateral propodeal area smooth, rarely alutaceous, glabrous or with long white setae, each seta with piliferous point at the base. Nucha with parallel longitudinal sulci dorsally and laterally or with a net of short irregular rugae. Tarsal claws with basal lobe. Fore wing longer than body, except in brachypterous forms, hyaline, with dense cilia on margin, veins brown, radial cell open, 3.5 – 5.2 × as long as broad; Rs and R 1 not or nearly reaching wing margin; areolet triangular, enclosed by distinct veins. Rs + M distinct along entire length or along 1 / 3 to 2 / 3 of distance between areolet and basalis, its projection reaching basalis at half of its height. Metasoma longer than head + mesosoma; 2 nd metasomal tergum extending to 1 / 3 – 5 / 6 length of metasoma in dorsal view, with patch of dense white setae anterolaterally, with or without micropunctures; all subsequent terga and hypopygium with or without micropunctures; prominent part of ventral spine of hypopygium variable, 2.0 – 8.0 × as long as broad in ventral view, with or without a few short white setae ventrally. Body length 0.9 – 3.1 mm. Gall. The asexual generation’s galls are always found on leaves but have a wide range of morphologies that can mainly be divided into two subgroups: One with pubescent masses, crystalline (resembling mineral crystalline structures, usually erected tubular structures with short rigid and brittle filaments radiating from it) or conical galls with rigid extensions on leaves; and a second with disc-shaped, often star-like, spangle galls (disc-shaped with a central round protrusion). The sexual generation’s gall	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFC9FFE8FF8AA1FCFA31F950.taxon	biology_ecology	Biology. Adults galling on oaks from Section Quercus. The galls of the asexual generation mature during autumn, and adults overwinter in the galls and emerge between late January and May. The sexual generation occurs in late spring. The galls maduration and emergence of adults spans between April and May.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFC9FFE8FF8AA1FCFA31F950.taxon	distribution	Distribution. Southern Canada, USA, and Mexico.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFC9FFE8FF8AA1FCFA31F950.taxon	description	Descriptions of the sexual females and males are given in the species section below.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFC3FFF4FF8AA4A5FB06F82D.taxon	description	Figs 1 – 12	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFC3FFF4FF8AA4A5FB06F82D.taxon	materials_examined	Types examined. HOLOTYPE: Asexual female “ Caves Jn, Ore, IV- 1 - 50 ”, red label “ Holotype 60114 USNM ”, white label “ Q. garryana ”. PARATYPE (1 asexual female) “ Caves Jn, Ore, IV- 1 - 50 ”, red label “ Paratype 60114 USNM ”, white label “ Q. garryana ”. All types examinated by GM. Specimen data and images available at http: // n 2 t. net / ark: / 65665 / 3 e 7 f 08 a 02 - 77 fe- 4 b 33 - a 2 d 9 - 6 c 7 eff 63 e 6 af	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFC3FFF4FF8AA4A5FB06F82D.taxon	diagnosis	Diagnosis. The asexual form of this species belongs to the Feron group in which the pronotum is laterally smooth to coriaceous, without carinae, and the mesoscutum is alutaceous to coriaceous, rugose-reticulate, or reticulate, sometimes with smooth areas and piliferous points, glabrous or pubescent as in F. atrimentum (asex), F. crystallinum (asex), F. izabellae (asex), F. pattersonae (asex), and F. sulfureum (asex). It differs from F. atrimentum (asex), F. crystallinum (asex), F. pattersonae (asex), and F. sulfureum (asex) in the following combination of characters: the frons is bulging in frontal view; ocelli are not elevated above the head, the transfacial distance is 1.4 × as long as the height of eye, the eyes slightly convergent ventrally, and the metapleural sulcus reaching the mesopleuron on the upper 2 / 3 of its height. The most similar species is F. izabellae (asex) from which F. albicomus differs in having the head and mesosoma reddish brown, the median mesoscutal line in the form of a short smooth, shining triangle, mesoscutellar foveae divided by a carina, and ventral spine of hypopygium 11.0 × as long as broad in ventral view.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFC3FFF4FF8AA4A5FB06F82D.taxon	description	Re-description. Asexual female (Figs 1 – 11). Body, antenna, legs rusty brown. Head alutaceous, with sparse setae on lower face, postgena, 1.2 × as broad as high and slightly narrower than mesosoma in frontal view; 2.3 × as broad as long in dorsal view. Gena alutaceous-reticulate, only slightly broadened behind eye in frontal view; gena in lateral view narrower than transverse diameter of eye in the dorsal part of eye and as broad as transverse diameter of eye in ventral part. Malar space alutaceous, with striae radiating from clypeus and reaching eye; eye 2.4 × as high as length of malar space; malar sulcus absent. Inner margins of eyes very slightly converging ventrally. POL 1.5 × as long as OOL, OOL 3.3 × as long as diameter of lateral ocellus and 1.5 × as long as LOL, all ocelli ovate, central ocellus slightly larger than lateral ocellus. Antennal toruli located above mid-height of eyes. Transfacial distance 1.4 x as long as height of eye; diameter of antennal torulus 1.75 × as long as distance between them, distance between torulus and eye 1.3 × as long as diameter of torulus; lower face smooth, shining, with white setae, ventral area along malar space alutaceous; slightly elevated median area and area between toruli alutaceous, without setae. Clypeus impressed, rectangular, broader than high, delicately coriaceous, with a few setae scattered all over; ventrally rounded, emarginate, without median incision; anterior tentorial pit large, rounded, deep, epistomal sulcus broad and deep, clypeo-pleurostomal line well impressed. Frons, interocellar area, vertex uniformly reticulate, without striae and setae; area under central ocellus impressed, smooth, glabrous; occiput alutaceous, with dense setae; postocciput glabrous, with numerous delicate longitudinal interrupted parallel striae; postgena smooth, with few setae; posterior tentorial pit large, elongated, area below impressed; occipital foramen as high as height of postgenal bridge; hypostomal carina emarginate, continuing into strong postgenal sulci which diverge until half the height of postgenal bridge, further sulci parallel and running alongside foramen until 1 / 3 of its height. Antenna as long as body, with 12 flagellomeres (suture between F 11 and F 12 indistinct), pedicel longer than broad, F 1 slightly shorter than length of scape + pedicel, 1.25 × as long as F 2, F 2 slightly longer than F 3, F 3 = F 4, subsequent flagellomeres shorter and nearly equal in length, F 12 shorter than F 11; placodeal sensilla on F 3 – F 12. Mesosoma longer than high, with white setae, setae denser on pronotum laterally, mesopleural triangle, mesoscutellum and lateral area of propodeum. Pronotum smooth without striae, with setae only in dorsal and posterior edges, piliferous points along dorsal edge; anterolateral edge of pronotum smooth, glabrous, without foveae; propleuron smooth, with sparse white setae. Mesoscutum longer than broad (greatest width measured across mesoscutum level with base of tegulae), uniformly alutaceous-reticulate. Notaulus complete, deep, posteriorly converging and broader than anteriorly, with smooth, glabrous bottom; at most posterior end the distance between notauli shorter than distance between notaulus and side of mesoscutum; anterior parallel line indistinct, hardly traceable; parapsidal line marked with narrow, smooth elevated stripe; median mesoscutal line in the form of a short smooth, glabrous, impressed triangle; parascutal carina broad, reaching notaulus. Mesoscutellum trapezoid, longer than broad, broadest part in posterior 1 / 3; center part of mesoscutellum disc rugoso-coriaceous, with stronger rugae posteriorly and laterally, overhanging metanotum, with long setae. Mesoscutellar foveae rounded, as broad as high, with smooth, glabrous bottom, divided by a narrow, elevated carina. Mesopleuron entirely smooth, with setae only along ventral edge; mesopleural triangle smooth, with dense white setae and piliferous points; dorsal and lateral axillar areas smooth, with setae; axillula with delicate parallel longitudinal striae; subaxillular bar smooth, glabrous, triangular, posteriorly slightly higher than height of metanotal trough; metapleural sulcus reaching mesopleuron at half of its height, lower part delimiting smooth area with few setae, upper part of sulcus indistinct. Metascutellum coriaceous, top as high as height of smooth, glabrous ventral impressed area; metanotal trough smooth, with a few setae; central propodeal area lyre-shaped, smooth, glabrous; lateral propodeal carinae strong, broad and high, bent outwards in posterior 1 / 3; lateral propodeal area smooth, with long white setae. Nucha with longitudinal sulci dorsally and laterally. Tarsal claws with basal lobe. Fore wing longer than body, hyaline, with short dense cilia on margin, veins light brown, radial cell open, 4.4 × as long as broad; Rs and R 1 nearly reaching wing margin; areolet small, triangular, closed, indistinct. Rs + M lightly pigmented, hardly traceable, visible on 1 / 3 of distance from areolet to basalis, its projection reaching basalis slightly below half of its height. Metasoma longer than head + mesosoma, longer than high in lateral view; all metasomal terga smooth, glabrous, 2 nd metasomal tergum extending to 2 / 3 length of metasoma in dorsal view, with white setae anterolaterally, without micropunctures; all subsequent terga with rare, weak, very delicate micropunctures. Hypopygium with micropunctures, prominent part of ventral spine of hypopygium 6.3 × as long as broad in ventral view. Body length 2.0 mm (n = 53) (Weld 1952 b). Gall (Fig. 12). The asexual monolocular, round, bristly pubescent galls are mostly on the underside and, sometimes, the dorsal surface of leaves. Galls are covered with short, stellate white hairs. Galls occur singly or in scattered groups along the edges of the leaves or near the midrib. Galls are 4 mm high and wide (Russo 2006, 2021; Weld 1952 b, 1957).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFC3FFF4FF8AA4A5FB06F82D.taxon	biology_ecology	Biology. The asexual generation is only known, which induces galls on Q. garryana (section Quercus, subsection Dumosae), the gall matures by October; adults emerge in April.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFC3FFF4FF8AA4A5FB06F82D.taxon	distribution	Distribution. USA: north California (Russo 2006, 2021; authors), Oregon (Burks 1979).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFDCFFF0FF8AA2E0FD03FAAC.taxon	description	Figs 13 – 24	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFDCFFF0FF8AA2E0FD03FAAC.taxon	materials_examined	Types examined. HOLOTYPE: Asexual female “ Tijeras, N. M. ”, “ Cut out Nov. 1.21 ”, red label ” Type No. 27186 USNM ”, “ Diplolepis amphora Weld ” deposited in USNM, examined by GM. Specimen data and images available at http: // n 2 t. net / ark: / 65665 / 302837515 - 1 e 1 c- 4243 - 9 b 94 - f 5 fc 71 dc 5 d 68. PARATYPE (2 females, and 2 galls) “ Tijeras N. M. ”, “ Quercus pungens ”, red label “ Paratype No. 27186 USNM ”, “ Diplolepis amphora Weld ”. Another seven paratypes are deposited in other institutions according to the original description. Additional material examined. One female “ USA, Arizona, 25 miles S of Flagstaff on I 17, AZ 246, galltype 71, Q. turbinella; leg. J. A. Nicholls, 2007.10.31 ”.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFDCFFF0FF8AA2E0FD03FAAC.taxon	diagnosis	Diagnosis. Asexual females belong to the group of Feron species that are brown to chestnut brown, rarely darker; inner margins of eyes parallel or only slightly converging ventrally; the frons is flat, not or only slightly bulging in frontal view; the mesoscutum is smooth or partially alutaceous anteriorly and glabrous; the mesoscutellum with irregular rugae at least in the lateral and posterior parts, sometimes the dorsocentral part is smooth, shining, without piliferous points; as in F. clarkei (sex), F. crystallinum (sex) and F. dumosae (sex). Differs from F. crystallinum and F. dumosae in the transfacial distance which is longer than the height of eye, the eye is less than 3.0 × as high as length of the malar space and the pronotum with carinae going across entire lateral surface; and differs from F. clarkei in characters mentioned at couplet 20 of the key.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFDCFFF0FF8AA2E0FD03FAAC.taxon	description	Re-description. Asexual female (Figs 13 – 23). Body uniformly light brown, legs light brown; scape, pedicel, F 1 and F 2 light brown, all subsequent flagellomeres uniformly dark brown; mesoscutum with narrow yellowish stripe along notaulus. Head with sparse white short setae on lower face, 1.2 × as broad as high and slightly broader than mesosoma in frontal view; 2.1 × as broad as long in dorsal view. Gena alutaceous, not broadened behind eye in frontal view, narrower than transverse diameter of eye in lateral view. Malar space alutaceous, with a few striae radiating from clypeus, some of which reach eye; eye 2.5 × as high as length of malar space; malar sulcus absent. Inner margins of eyes parallel. POL 1.7 × as long as OOL, OOL 1.9 × as long as diameter of lateral ocellus and slightly longer than LOL, all ocelli ovate, of same size. Transfacial distance slightly longer than height of eye; toruli located in the upper half of head and frons shorter than lower face, diameter of antennal torulus nearly 2.0 × as long as distance between them, distance between torulus and eye 1.4 × as long as diameter of torulus; lower face smooth, with sparse white setae; slightly elevated median area alutaceous, with a few setae. Clypeus trapezoid, slightly broader than high, delicately coriaceous, with a few long setae scattered all over; ventrally rounded, emarginate, without median incision; anterior tentorial pit small, rounded, indistinct, epistomal sulcus distinct, clypeo-pleurostomal line well impressed. Frons, interocellar area, vertex uniformly alutaceous, without striae and setae; area under central ocellus impressed, alutaceous; occiput and postocciput, postgena alutaceous, with few setae; posterior tentorial pit large, elongated, area below impressed; occipital foramen as high as height of postgenal bridge; hypostomal carina emarginate, continuing into strong postgenal sulci which strongly diverge toward occipital foramen, postgenal bridge anteriorly slightly broader than occipital foramen. Antenna longer than head + mesosoma, with 12 flagellomeres; pedicel 1.6 × as long as broad; F 1 1.7 × as long as pedicel and slightly longer than F 2; F 2 1.2 × as long as F 3; F 3 to F 6 equal in length, F 7 to F 11 shorter and all equal in length, F 12 as long as F 11; placodeal sensilla on F 3 – F 12. Mesosoma as long as high, with a few white setae along propleura. Pronotum smooth, glabrous, foveolate along propleuron, laterally smooth to coriaceous, sometimes with delicate parallel striae in anteroposterior part; propleuron smooth, glabrous. Mesoscutum slightly longer than broad (greatest width measured across mesoscutum level with base of tegulae), weakly alutaceous between notauli in anterior half and laterad to notauli, smooth and glabrous in between notauli in posterior half. Notaulus complete, deep, posteriorly converging and broader than anteriorly, bottom smooth, glabrous; at most posterior end the distance between notauli shorter than distance between notaulus and side of mesoscutum; anterior parallel line indistinct, impressed, smooth, glabrous, reaching to 1 / 5 length of mesoscutum; parapsidal line invisible; median mesoscutal line absent; parascutal carina broad, reaching notaulus. Mesoscutellum trapezoid, longer than broad, with subparallel sides, broader at posterior end; disc of mesoscutellum smooth glabrous in central part, rugose in most posterior part and along sides, with some longitudinal rugae, overhanging metanotum; circumscutellar carina present. Mesoscutellar foveae in the form of an anterior transverse, smooth, glabrous impressed area, well-delimited anteriorly and smoothly continuing into disc of mesoscutellum. Mesopleuron entirely smooth, glabrous, without setae, setae present only along ventral edge; mesopleural triangle delicately coriaceous, with sparse short white setae; dorsal and lateral axillar areas smooth, glabrous, without setae; axillula with delicate parallel longitudinal striae; subaxillular bar smooth, glabrous, triangular, posteriorly as high as height of metanotal trough; metapleural sulcus reaching mesopleuron at half of its height, lower part of sulcus delimiting broad triangular coriaceous area; upper part of sulcus also distinct, separating smooth, glabrous area. Metascutellum smooth, glabrous, as high as height of smooth, glabrous ventral impressed area; metanotal trough smooth, with a few short setae; central propodeal area lyre-shaped, smooth, glabrous, without rugae; lateral propodeal carinae strong, broad and high, bent outwards in posterior 1 / 3; lateral propodeal area smooth, with long white setae, each seta with rounded bump at the base. Nucha with parallel longitudinal sulci dorsally and laterally. Tarsal claws with basal lobe. Fore wing longer than body, hyaline, with dense cilia on margin, veins brown, radial cell open, 3.9 × as long as broad; Rs and R 1 nearly reaching wing margin; areolet triangular, enclosed by distinct veins. Rs + M indistinct, visible on 1 / 3 of distance between areolet and basalis, its projection reaching basalis at half of its height. Metasoma longer than head + mesosoma, rounded, higher than long in lateral view; 2 nd metasomal tergum smooth, extending to 2 / 3 length of metasoma in dorsal view, with patch of dense white setae anterolaterally, without micropunctures; all subsequent terga and hypopygium smooth, without micropunctures; prominent part of ventral spine of hypopygium 5.2 × as long as broad in ventral view, with a few short white setae ventrally. Body length 1.4 – 2.2 mm (n = 31) (Weld 1926). Gall (Fig. 24). The gall is on the underside of leaf, either side of midrib but not on it, red, reddish-purple or brownish, with pale brown apical dimple, 3 mm in diameter, 4 – 5 mm height, the hole at apex about 1 mm in diameter, surface with very short pilosity. A hollow cylinder, with a short petiole at the base, swollen more or less in the middle and tapering to the apex at which there is a small hole leading into a deep cavity at the bottom of which is the thin-walled larval cell (Weld 1926).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFDCFFF0FF8AA2E0FD03FAAC.taxon	biology_ecology	Biology. Only the asexual generation is known which induces galls on Q. arizonica, Q. oblongifolia and Q. turbinella (section Quercus, subsection Leucomexicana), and Q. pungens (section Quercus, subsection Polymorphae). Galls mature in autumn, drop with leaves.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFDCFFF0FF8AA2E0FD03FAAC.taxon	distribution	Distribution. USA: Arizona, New Mexico.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFDBFFFCFF8AA7BCFC99FD65.taxon	description	Figs 25 – 36	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFDBFFFCFF8AA7BCFC99FD65.taxon	materials_examined	Types examined. HOLOTYPE: Asexual female No. 56376. Five paratypes are deposited in the USNM and were examined by GM. Specimen data and images available at http: // n 2 t. net / ark: / 65665 / 355 e 5568 d-b 757 - 4 f 7 c- 8 e 96 - a 0 ef 983 d 8 d 67. Paratypes were deposited also in the American and Chicago Museums, Museum of Comparative Zoology, Academy of Natural Sciences of Philadelphia, and California Academy of Sciences. One paratype female and one gall on one pin “ E. Falls Church, Va, mar. 7 ’ 42 ”, “ Quercus alba ”, “ 648 ”, red label “ Paratype 56376 ”.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFDBFFFCFF8AA7BCFC99FD65.taxon	diagnosis	Diagnosis. This asexual form belongs to the group of species with a black body, the scape, pedicel, F 1, F 2 are dark brown (sometimes light brown but never yellowish), legs are reddish brown with at least hind coxae darker; the frons is flat, not or only slightly bulging in frontal view; toruli are located in the upper half of the head, inner margins of eyes never strongly converging ventrally; the mesoscutum smooth or partially alutaceous anteriorly and glabrous, notaulus complete, the mesopleuron entirely smooth without transverse striae in central part, the mesoscutellum is uniformly alutaceous with numerous setae on piliferous points and the prominent part of the ventral spine of the hypopygium with setae; similar to F. kingi (sex) and F. pattersonae (sex). Feron apiarium differs from these two species in the eyes which are parallel and 1.7 × as high as length of the malar space, antennomeres have long and erect setae, OOL only slightly longer than the diameter of lateral ocellus, the notaulus is deep and the prominent part of the ventral spine of the hypopygium has long dense white setae ventrally.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFDBFFFCFF8AA7BCFC99FD65.taxon	description	Re-description. Asexual female. Head, antenna, mesosoma, black; legs, metasoma slightly lighter, reddish brown. Head alutaceous, with sparse white setae on lower face, 1.2 × as broad as high and as broad as mesosoma in frontal view, 2.0 × as broad as long in dorsal view. Gena alutaceous, not broadened behind eye in frontal view, narrower than transverse diameter of eye in lateral view. Malar space alutaceous, shining, with delicate striae radiating from clypeus and nearly reaching eye, malar sulcus absent; eye 1.7 × as high as length of malar space. Eyes slightly converging ventrally. POL 1.6 × as long as OOL, OOL slightly longer than diameter of lateral ocellus and 1.8 × as long as LOL, all ocelli ovate, of same size. Transfacial distance 1.2 × as long as height of eye; toruli located at half height of head; diameter of antennal torulus as long as distance between them, distance between torulus and eye slightly shorter than diameter of torulus; lower face alutaceous, with white setae, without striae; slightly elevated median area alutaceous, glabrous, without setae. Clypeus rectangular, nearly 2.0 × as broad as high, smooth, with long setae; ventrally rounded, not emarginate and without median incision; anterior tentorial pit large, rounded, indistinct, epistomal sulcus distinct, clypeo-pleurostomal line inconspicuous. Frons, interocellar area, vertex, occiput uniformly alutaceous, without striae and setae, with some piliferous points; postocciput alutaceous, smooth, glabrous along occipital foramen; postgena for the most part reticulate, smooth and glabrous along occipital foramen, postgenal bridge and hypostomata; posterior tentorial pit large, ovate, area below impressed; occipital foramen higher than height of postgenal bridge; hypostomal carina emarginate, continuing into postgenal sulci which strongly diverge toward occipital foramen, postgenal bridge anteriorly as broad as occipital foramen. Antenna as long as head + mesosoma, antennomeres with long setae, with 12 flagellomeres, pedicel slightly longer than broad, flagellomeres slightly broadened towards apex; F 1 2.0 × as long as pedicel and 1.2 × as long as F 2; F 2 1.2 × as long as F 3; F 3 = F 4, F 5 = F 6 = F 7, subsequent flagellomeres nearly equal in length; placodeal sensilla on F 4 – F 12. Mesosoma slightly longer than high, with sparse white setae, denser on lateral propodeal area. Pronotum alutaceous, with sparse dense setae, with a few delicate striae anteroventrally; propleuron smooth, glabrous, shining on ventral invaginated broad half, delicately coriaceous in the dorsal narrowed part. Mesoscutum alutaceous, with a few setae anteriorly, along notaulus and parascutal carina, with denser setae along anterior edge, slightly longer than broad (greatest width measured across mesoscutum level with base of tegulae). Notaulus complete, narrow, deep, with smooth bottom, posteriorly converging; anterior parallel line, parapsidal line not marked, invisible; median mesoscutal line absent; parascutal carina broad, reaching notaulus. Mesoscutellum rounded, slightly longer than broad, uniformly alutaceous, with numerous setae on piliferous points, with net of strong irregular rugae posteriorly, overhanging metanotum; circumscutellar carina complete. Mesoscutellar foveae separated by narrow elevated coriaceous central carina, ovate, with smooth, glabrous bottom. Mesopleuron and speculum uniformly smooth, shining; mesopleural triangle smooth, glabrous, with some delicate striae and sparse white setae; dorsal and lateral axillar areas delicately coriaceous, with a few white setae; subaxillular bar smooth, glabrous, with parallel sides, as high as height of metanotal trough, slightly higher at posterior end; metapleural sulcus reaching mesopleuron slightly above half of its height, delimiting coriaceous area, upper part of sulcus distinct. Metascutellum coriaceous, glabrous, slightly shorter than height of smooth, glabrous ventral impressed area; metanotal trough smooth, glabrous, without setae; central propodeal area smooth, glabrous, with a few irregular rugae; lateral propodeal carinae bent slightly outwards at mid-height; lateral propodeal area smooth, with dense white setae. Nucha with sulci dorsally and laterally. Tarsal claws toothed, with acute basal lobes. Fore wing longer than body, hyaline, with cilia on margin, veins brown, distinct, radial cell open, narrow, 4.4 × as long as broad; R 1 and Rs nearly reaching wing margin; areolet distinct. Rs + M distinct on 2 / 3 of distance between areolet and basalis, its projection reaching basalis at its mid height. Metasoma longer than head + mesosoma, longer than high in lateral view; 2 nd metasomal tergum extending to 1 / 3 length of metasoma in dorsal view, with setae on anterodorsal part and a row of a few setae laterally at mid height, without micropunctures; subsequent terga smooth, glabrous, without micropunctures. Hypopygium without micropunctures, prominent part of ventral spine of hypopygium short, slightly longer than broad in ventral view, with long dense white setae ventrally. Body length 1.7 – 2.6 mm (n = 21) (Weld 1944). Gall (Fig. 36). Solitary, sessile, on underside of leaf close to edge, shaped like an old-fashioned straw beehive, white or pinkish, up to 4.6 mm broad by 4.0 mm high. Inside is a large cavity with a transverse larval cell at the very base. During the winter on the ground the outer fleshy layer shrivels and the gall becomes more cylindrical (Weld 1944).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFDBFFFCFF8AA7BCFC99FD65.taxon	biology_ecology	Biology. Only females are known. Leaf galls on Q. alba (section Quercus, subsection Albae). Mature galls in October; adults emerge next year, in February – March.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFDBFFFCFF8AA7BCFC99FD65.taxon	distribution	Distribution. USA: Washington DC, VA (Burks 1979).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFD7FFC4FF8AA175FD85FCC0.taxon	description	Figs 37 – 67	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFD7FFC4FF8AA175FD85FCC0.taxon	materials_examined	Additional material. Asexual females: 27 females label as “ USA: CA, Dye Creek Preserve, CA 1170, galltype 137; Q. douglasii; leg. J. A. Nicholls, 2001.09.27 ”; 2 females “ USA: CA, Del Puerto Canyon, Q. douglasii; leg. R. Challis, 2004.10.21 ”; 4 females “ USA: CA, Clearlake, CA 941, galltype 137; Q. douglasii; leg. J. A. Nicholls, 2007.11.03 ”. Sexual generation: 3 females “ USA: CA, Quail Ridge Reserve, CA 1044, galltype 231, Q. douglasii; leg. J. A. Nicholls, 2008.04.04 ”; 55 females and 37 males “ USA: CA, Dye Creek Preserve, CA 1048, 1049, galltype 231; Q. douglasii; leg. J. A. Nicholls, 2008.03.30 ”.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFD7FFC4FF8AA175FD85FCC0.taxon	diagnosis	Diagnosis. Asexual females belong to the group of Feron species with the pronotum laterally smooth to coriaceous, without carinae; the mesoscutum is alutaceous to coriaceous, rugose-reticulate, reticulate, sometimes with smooth areas and piliferous points, glabrous or pubescent as occurs in F. albicomus (asex.), F. crystallinum (asex), F. izabellae (asex), F. pattersonae (asex) and F. sulfureum (asex). Feron atrimentum differs from F. albicomus and F. izabellae in having the ocelli elevated above the head and the pronotum laterally with setae on the entire lateral surface; differs from F. crystallinum, F. pattersonae and F. sulfureum in the pronotum which is smooth (coriaceous in the other three species); the mesoscutum is longer than broad, scarcely pubescent, without black stripes and the anterior parallel line is indistinct. For other characters consult couplet 24 in the key. Sexual females belong to the group of Feron species in which the mesoscutum is alutaceous to coriaceous, rugose-reticulate, reticulate, without piliferous points and the pronotum laterally with longitudinal carinae as in F. splendens (asex), F. vitreum (asex) and F. verutum (asex); nevertheless, it differs from these asexual forms by having a black body, eyes are strongly converging ventrally, the transfacial distance shorter than the height of eye, antennal toruli located slightly above half the eyes’ height and the eye around 6.0 × as high as length of the malar space. Males differs from all known Feron males in having strongly elevated ocelli above the frons in frontal view, OOL shorter than the diameter of lateral ocellus and inner margins of eyes subparallel, the mesoscutum is uniformly reticulate between notauli in anterior half and laterad to the notaulus but smooth between notauli in the posterior half. Re-description. Asexual female (Figs 37 – 48). Body uniformly brown, with darker propodeum. Head with sparse setae on lower face, gena and posteriorly, 1.2 × as broad as high and slightly narrower than mesosoma in frontal view; 1.9 × as broad as long in dorsal view. Gena alutaceous-reticulate, not broadened behind eye in frontal view, narrower than transverse diameter of eye in lateral view. Malar space alutaceous, shining, with short striae radiating from clypeus reaching to 1 / 3 of malar space length; eye 3.0 × as high as length of malar space; malar sulcus absent. Inner margins of eyes parallel. POL 2.6 × as long as OOL, OOL 1.7 × as long as diameter of lateral ocellus and slightly shorter than LOL, all ocelli ovate, of same size. Antennal toruli located above mid-height of eyes. Transfacial distance 1.2 × as long as height of eye; diameter of antennal torulus slightly longer than distance between them, distance between torulus and eye as long as diameter of torulus; lower face smooth with white setae; slightly elevated median area smooth, without setae. Clypeus impressed, rectangular, 1.75 × as broad as high, delicately coriaceous, with a few setae scattered all over; ventrally rounded, emarginate, without median incision; anterior tentorial pit large, rounded, deep, epistomal sulcus broad and deep, clypeo-pleurostomal line well impressed. Frons, interocellar area, vertex uniformly reticulate, without striae and setae; area under central ocellus impressed, smooth, glabrous; occiput alutaceous, with dense setae; postocciput glabrous, with numerous delicate longitudinal interrupted parallel striae; postgena smooth, with a few setae; posterior tentorial pit large, elongated, area below impressed; occipital carina black, well-visible alongside occipital foramen; occipital foramen as high as height of postgenal bridge; hypostomal carina emarginate, continuing into strong postgenal sulci which diverge until half height of postgenal bridge, further sulci parallel and running alongside foramen until 1 / 3 of its height. Antenna slightly longer than head + mesosoma, with 12 flagellomeres; flagellomeres gradually broadened towards apex; F 1 – F 3 with sparse white setae, F 4 – F 12 with dense setae; pedicel 1.7 × as long as broad; F 1 2.2 × as long as pedicel and 1.4 × as long as F 2; F 2 = F 3 = F 4; F 5 = F 6 and shorter than previous; all subsequent flagellomeres shorter and equal in length; F 12 as long as F 11, suture between F 11 and F 12 distinct; placodeal sensilla on F 4 – F 12. Mesosoma longer than high, with white setae, setae denser on pronotum laterally, mesopleural triangle and mesoscutellum. Pronotum smooth without striae, with sparse setae, piliferous points along dorsal edge; propleuron smooth, with sparse white setae. Mesoscutum longer than broad (greatest width measured across mesoscutum level with base of tegulae), alutaceous-reticulate between notauli in anterior 2 / 3 of length and laterad to notauli, smooth, glabrous in between notauli in posterior half. Notaulus complete, deep, posteriorly strongly converging and broader than anteriorly, with smooth, glabrous bottom; at posterior end the distance between notauli shorter than distance between notaulus and side of mesoscutum; anterior parallel line indistinct; parapsidal line absent, not marked; median mesoscutal line absent; parascutal carina broad, reaching notaulus. Mesoscutellum trapezoid, longer than broad, broadest part in posterior 1 / 3; center part of mesoscutellum disc rugoso-coriaceous, with stronger rugae posteriorly and laterally, overhanging metanotum, with long setae. Mesoscutellar foveae ovate, broader than high, with smooth, glabrous bottom, divided by a elevated narrow carina. Mesopleuron entirely smooth, with setae only along ventral edge; mesopleural triangle smooth, with dense white setae and piliferous points; dorsal and lateral axillar areas smooth, with setae; axillula with delicate parallel longitudinal striae; subaxillular bar smooth, glabrous, with subparallel sides, posteriorly as high as height of metanotal trough; metapleural sulcus reaching mesopleuron at half of its height, lower part delimiting smooth area with a few setae, upper part of sulcus absent. Metascutellum coriaceous, as high as height of smooth, glabrous ventral impressed area; metanotal trough smooth, with few setae; central propodeal area lyre-shaped, smooth, glabrous; lateral propodeal carinae strong, bent outwards in posterior 1 / 3; lateral propodeal area smooth, with long white setae. Nucha with longitudinal sulci dorsally and laterally. Tarsal claws with acute basal lobe. Fore wing longer than body, hyaline, with short dense cilia on margin, veins brown, radial cell open, 4.2 × as long as broad; Rs and R 1 nearly reaching wing margin; areolet absent. Rs + M indistinct, visible on 2 / 3 of distance between areolet and basalis, its projection reaching basalis at half of its height. Metasoma longer than head + mesosoma, higher than long in lateral view; 2 nd metasomal tergum extending nearly to half-length of metasoma in dorsal view, with patch of dense white setae anterolaterally, without micropunctures; all subsequent terga and hypopygium with fine micropunctures; prominent part of ventral spine of hypopygium 6.7 × as long as broad in ventral view, with a few short white setae ventrally. Body length 1.7 – 1.9 mm (n = 2). Sexual female (Figs 51 – 61). Head, mesosoma, metasoma black; antenna dark brown, except yellowish scape, pedicel and F 1; metasoma chestnut, hypopygium light brown; legs yellow with dark brown to black coxae. Head with sparse setae, denser on lower face and postgena, 1.2 × as broad as high and slightly broader than mesosoma in frontal view; 2.1 × as broad as long in dorsal view. Gena alutaceous, not broadened behind eye in frontal view, narrower than transverse diameter of eye in lateral view. Malar space alutaceous, without striae; eye 6.1 × as high as length of malar space; malar sulcus absent. Inner margins of eyes strongly converging ventrally. POL 2.4 × as long as OOL, OOL 1.2 × as long as diameter of lateral ocellus and equal in length to LOL, all ocelli ovate, of same size. Transfacial distance shorter than height of eye; toruli located at half of eyes height, frons shorter than lower face, diameter of antennal torulus 1.3 × as long as distance between them, distance between torulus and eye as long as diameter of torulus; lower face smooth with white setae, alutaceous in most ventral part above malar space; slightly elevated median area and area between toruli alutaceous. Clypeus trapezoid, as broad as high, delicately coriaceous, with a few long setae along ventral edge; ventrally emarginate, with median incision; anterior tentorial pit large, ovate, epistomal sulcus distinct, deep, clypeo-pleurostomal line well impressed, deep. Frons, interocellar area, vertex uniformly reticulate, without striae and setae; area under central ocellus impressed, alutaceous; occiput and postgena alutaceous; postocciput with numerous delicate interrupted parallel striae dorsally and laterally of occipital foramen; posterior tentorial pit large, elongated, area below impressed; occipital foramen as high as height of postgenal bridge; hypostomal carina emarginate, continuing into strong postgenal sulci which diverge strongly toward occipital foramen, postgenal bridge anteriorly slightly broader than occipital foramen. Antenna slightly longer than head + mesosoma, with 12 flagellomeres; F 1 – F 3 with rare setae, subsequent flagellomeres with denser setae; scape, pedicel, F 1 yellowish brown, all subsequent flagellomeres dark brown; pedicel only slightly longer than broad; F 1 2.5 × as long as pedicel and slightly longer than F 2; F 2 1.2 × as long as F 3, F 3 = F 4, all subsequent flagellomeres nearly equal in length, F 12 longer than F 11; placodeal sensilla on F 3 – F 12. Mesosoma longer than high, with a few white setae, denser on mesoscutellum and lateral propodeal area. Pronotum delicately coriaceous, with sparse setae and delicate parallel striae laterally; propleuron alutaceous. Mesoscutum slightly longer than broad (greatest width measured across mesoscutum level with base of tegulae), uniformly reticulate between notauli in anterior half and laterad to notauli, smooth and glabrous in between notauli in posterior half. Notaulus complete, shallow, posteriorly converging and broader than anteriorly, bottom smooth, glabrous; in most posterior part distance between notauli shorter than distance between notaulus and side of mesoscutum; anterior parallel line distinct, smooth, glabrous, reaching to 1 / 3 length of mesoscutum; parapsidal line marked with broad smooth, glabrous stripe; median mesoscutal line absent; parascutal carina broad, reaching notaulus. Mesoscutellum trapezoid, longer than broad, broadest part in posterior 1 / 3, uniformly rugoso-coriaceous, overhanging metanotum, with sparse long setae. Mesoscutellar foveae quadrangular, as broad as high, with smooth, glabrous bottom, divided by a rugose elevated triangular area. Mesopleuron entirely smooth, with setae only along ventral edge; mesopleural triangle smooth, with dense white setae; dorsal and lateral axillar areas smooth, glabrous, without setae; axillula with delicate parallel longitudinal striae; subaxillular bar smooth, glabrous, with parallel sides, posteriorly shorter than height of smooth, glabrous metanotal trough; metapleural sulcus reaching mesopleuron at half of its height, upper part of sulcus indistinct, lower part of sulcus delimiting smooth, glabrous area, with few setae. Metascutellum coriaceous, slightly higher than height of smooth, glabrous ventral impressed area; metanotal trough smooth, with few setae and few rugae; central propodeal area smooth, glabrous, with a few strong short longitudinal rugae posteriorly; lateral propodeal carinae strong, broad and high, bent strongly outwards at mid-height; lateral propodeal area smooth, with long white setae, each seta with piliferous point at the base. Nucha with numerous irregular rugae. Tarsal claws with small basal lobe. Fore wing longer than body, hyaline, with short cilia on margin, veins brown, radial cell open, 4.3 × as long as broad; Rs and R 1 reaching wing margin; areolet distinct, triangular. Rs + M distinct, reaching basalis slightly below half of its height. Metasoma slightly longer than head + mesosoma, longer than high in lateral view; 2 nd metasomal tergum extending to 1 / 3 length of metasoma in dorsal view, with patch of white setae anterolaterally, without micropunctures; all subsequent terga and hypopygium without micropunctures; prominent part of ventral spine of hypopygium 4.5 × as long as broad in ventral view, with short white setae ventrally. Body length 2.7 – 3.1 mm (n = 10). Male (Figs 62 – 67). Like female but antenna longer than body, with 13 flagellomeres, F 1 with longitudinal yellow stripe on the inner side, placodeal sensilla on all flagellomeres, F 13 slightly shorter than F 12. Eye and ocelli larger than in female; POL 3.0 × as long as OOL, OOL slightly longer than diameter of ocellus and slightly shorter than LOL; transfacial distance shorter than height of eye, height of eye 6.0 × as long as length of malar space. Body length 2.2 – 2.7 mm (n = 10). Gall. The sexual gall (Fig. 49) is monolocular, spherical, 3 – 5 mm in diameter, smooth, green when growing, becoming paler later, mature galls when dried are yellow-brown; larval cell is blue-black and sometimes visible though outer layers of the gall. Walls of the gall are thin, the larval chamber is also thin-walled, 1.5 mm in diameter and connected with the outside wall by a tangle of dense fibers. The gall is in the leaf tissue, projecting equally on both sides. Asexual galls (Fig. 50) are monolocular, conical, flat-based, detachable, on lower leaf margin. Sides nearly straight, flaring slightly at base. Red and yellow striped when fresh, turning to brown and yellow with age. Basal larval cell oval from lateral view, 1.6 mm in diameter, 0.8 mm high, pubescent. Upper surface of larval cell coriaceous with sparse pubescence; brown, darker towards center. Gall height 3.6 – 4.6 mm, width 3.0 – 4.6 mm.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFD7FFC4FF8AA175FD85FCC0.taxon	biology_ecology	Biology. Matching of generations was first presented in Dailey & Sprenger (1973 b). Alternate sexual and asexual generations are also confirmed herein using DNA data, with four individuals (three asexual females, one sexual female) sequenced for cytb. Cytb sequences were on average 0.35 % divergent between individuals (range 0 – 0.70 %; GenBank accessions OK 041496, OQ 446191 – OQ 446193). Feron atrimentum is associated with Q. douglasii, Q. dumosa, Q. john-tuckeri and Q. lobata (section Quercus, subsection Dumosae). The sexual generation females emerge throughout April and usually oviposit in the lower leaf surface near the margin. Asexual galls develop over the following three months. Pupation occurs during late October to November; asexual females emerge in late winter and oviposit in leaf buds. Sexual generation galls usually reach full size by mid-March (Dailey & Sprenger 1973 b).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFD7FFC4FF8AA175FD85FCC0.taxon	distribution	Distribution. USA: California.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFEFFFC6FF8AA110FD14FCC0.taxon	description	Figs 68 – 71	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFEFFFC6FF8AA110FD14FCC0.taxon	materials_examined	Type material. HOLOTYPE: Asexual female “ Los Angeles, Calif., II. 9.58 ”, “ Q. dumosa ”, “ R. J. Lyon Collection ”, “ Andricus bakkeri Lyon ”, red label “ Holotype ”. PARATYPES (6 asexual females) with the same data as the holotype. The female holotype and the six paratypes are in the collection of the USNM, examined by VC-P. The type was examined based on photos taken by M. Buffington, USNM. Information and pictures of the holotype can be consulted here: http: // n 2 t. net / ark: / 65665 / 32562 b 378 - 0160 - 44 b 1 - 94 a 5 - 4136889 a 738 e.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFEFFFC6FF8AA110FD14FCC0.taxon	diagnosis	Diagnosis. Asexual females belong to the group of Feron species in which the body is reddish brown; the head is rounded in frontal view, ocelli are not elevated above the frons; inner margins of eyes slightly converging ventrally, the transfacial distance is longer than the height of eye; toruli are located above mid-height of eyes; the eye is less than 3.0 × as high as length of the malar space as in F. scutellum (asex), F. stellare (asex), and F. rucklei (asex). However, F. bakkeri has inconspicuous meoscutellar foveae with faintly rugose bottoms like the rest of the mesoscutellar disk; the metasoma is distinctly longer than high; while in the asexual forms of the other species the mesoscutellar foveae are conspicuous, with the bottom smooth, and the metasoma is almost as high as long. The gall is reminiscent of the gall of F. scutellum but is somewhat smaller (Lyon 1984). Re-description. Asexual female (Figs 68 – 70). Head, antenna, mesosoma, legs, metasoma uniformly reddish brown, except dark brown posterior tergum. Head alutaceous-reticulate, with sparse setae on lower face, slightly broader than high and as broad as mesosoma in frontal view; 2.6 × as broad as long in dorsal view. Gena alutaceous-reticulate, not broadened behind eye in frontal view; gena in lateral view 2.0 × narrower than transverse diameter of eye in dorsal part and as broad as eye in ventral part. Malar space delicately coriaceous, with delicate striae, malar sulcus absent; eye 2.6 × as high as length of malar space. Inner margins of eyes converging ventrally. POL 1.4 × as long as OOL, OOL 3.6 × as long as diameter of lateral ocellus and slightly shorter than LOL, all ocelli ovate, of same size. Antennal toruli located above mid-height of eyes. Transfacial distance 1.3 × as long as height of eye; frons shorter than height of lower face, diameter of antennal torulus 1.7 × as long as distance between them, distance between torulus and eye slightly longer than diameter of torulus; lower face delicately coriaceous, with dense white setae; slightly elevated median area and area between toruli delicately coriaceous, with a few setae. Clypeus impressed, flat, rectangular, broader than high, delicately coriaceous, with a few long setae along ventral edge; ventrally rounded, not emarginate and without median incision; anterior tentorial pit rounded, distinct, small; epistomal sulcus distinct, clypeo-pleurostomal line well impressed. Frons, interocellar area, vertex and occiput uniformly alutaceous-reticulate, without striae and setae. Antenna shorter than body, with 12 flagellomeres, pedicel subglobose, slightly longer than broad; F 1 1.2 × as long as F 2 and 1.6 × as long as pedicel; F 2> F 3, F 4 – F 7 subequal in length, F 8 – F 11 slightly shorter, subequal and wider; F 12 slightly shorter than F 11; placodeal sensilla on F 3 – F 12. Mesosoma nearly as long as high, with setae. Pronotum glabrous, with delicate short parallel striae along posterior edge, with piliferous points. Mesoscutum uniformly reticulate, slightly longer than broad (greatest width measured across mesoscutum level with base of tegulae). Notaulus complete, distinctly impressed along entire length; posteriorly converging; at posterior end the distance between notauli shorter than distance between notaulus and side of mesoscutum; anterior parallel line indistinct; parapsidal line marked with indistinct, narrow smooth, impressed area; median mesoscutal line absent; parascutal carina broad, reaching notaulus. Mesoscutellum slightly longer than broad, with subparallel sides; disk of mesoscutellum rugose, overhanging metanotum, with sparse setae. Mesoscutellar foveae inconspicuous, faintly rugose bottom, like the rest of the mesoscutellar disk, smoother anteriorly, without central carina. Mesopleuron smooth, alutaceous only on most anterior part; speculum smooth, glabrous, with transverse striae in most anterior part; mesopleural triangle smooth, with a few white setae; dorsal and lateral axillar areas smooth, with white setae; axillula with delicate parallel longitudinal striae; subaxillular bar smooth, glabrous, with subparallel sides, posteriorly shorther than height of metanotal trough; metapleural sulcus reaching mesopleuron at half of its height; upper part of sulcus indistinct; lower part of sulcus delimiting smooth area with dense long white setae. Metascutellum smooth, glabrous, shorter than height of smooth, glabrous ventral impressed area; metanotal trough smooth, with sparse setae; central propodeal area lyre-shaped, smooth, glabrous, without rugae; lateral propodeal carinae distinct, bent outwards in posterior 1 / 3 of its height; lateral propodeal area smooth, and with long dense white setae with impressed setae points. Nucha with numerous sulci laterally. Tarsal claws with basal lobe. Fore wing longer than body, hyaline, with cilia on margin, veins brown, radial cell open, 3.0 × as long as broad; Rs and R 1 nearly reaching wing margin; areolet indistinct. Rs + M indistinct, not reaching basalis. Metasoma longer than head + mesosoma, slightly longer than high in lateral view; 2 nd metasomal tergum extending to 2 / 3 length of metasoma in dorsal view, with numerous white setae anterolaterally, with rare micropunctures posteriorly; all subsequent terga with micropunctures. Hypopygium with micropunctures, prominent part of ventral spine of hypopygium 7.5 × as long as broad in ventral view, with long setae ventrally. Body length 1.3 – 2.0 mm (n = 3). Gall (Fig. 71). A monolocular, cup-shaped leaf spangle gall, 3 – 3.5 mm in height. The larval cell occupies the base of the cup whose margins are collapsed at maturity (Lyon 1984).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFEFFFC6FF8AA110FD14FCC0.taxon	biology_ecology	Biology. Only the asexual generation is known, which induces galls on Q. dumosa (section Quercus, subsection Dumosae). The galls appear on the leaves during the early summer until August. At this time the galls are red and contain small larvae. Pupation occurs in late October and early November; adults can be cut out in early December; however, normal emergence takes place in February – March, or even later.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFEFFFC6FF8AA110FD14FCC0.taxon	distribution	Distribution. USA: California (Lyon 1984).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFEDFFC2FF8AA110FCE4FDCC.taxon	description	Figs 72 – 83	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFEDFFC2FF8AA110FCE4FDCC.taxon	materials_examined	Type examined. HOLOTYPE: Asexual female “ Hillsboro, N. M., April 25 ”, “ Quercus pungens ”, red label “ Type No. 27187 USNM ”, “ Diplolepis caepula Weld ” deposited in USNM, examined by GM. Specimen data and images available at http: // n 2 t. net / ark: / 65665 / 3157 da 14 c- 7171 - 49 c 8 - a 07 e- 672605 fcd 699. Additional material. Five females labelled as “ USA, Arizona, 25 miles S of Flagstaff on I 17, Q. turbinella; Code AZ 798, galltype 95, leg. J. A. Nicholls, 2007.10.31. ”	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFEDFFC2FF8AA110FCE4FDCC.taxon	diagnosis	Diagnosis. Asexual females; as with F. bakkeri (asex), F. rucklei (asex) and F. stellare (asex) the body is never black, the head is rounded in frontal view, slightly elevated median area of the lower face smooth, shining; the gena at least slightly broadened behind the eye; ocelli are not elevated above the frons; the transfacial distance is longer than the height of eye; the antenna with 12 flagellomeres, sometimes suture between F 11 and F 12 incomplete; toruli are located above the mid-height of the eye; the eye is less than 3.0 × as high as length of the malar space; lateral ocelli smaller, OOL at least 2.5 × as long as the diameter of ocellus if shorter, then the head and mesosoma are not yellowish or light brown; the pronotum laterally with longitudinal carinae; the mesoscutum is alutaceous to coriaceous, rugose-reticulate, reticulate, without piliferous points; mesoscutellar foveae divided by a central carina; and the mesopleuron is entirely smooth. Nevertheless, F. caepula differs from those species in its yellowish to light brown body, eyes strongly converging ventrally; eye 3.0 × as high as length of malar space; central part of mesoscutellum smooth; prominent part of ventral spine of hypopygium around 3.8 × as long as broad in ventral view. Re-description. Asexual female (Figs 72 – 82). Head, mesosoma, mandibles, mouthparts, antennae, legs and metasoma uniformly light brown; head with dark brown small spots near ocelli; central propodeal area and last terga dark brown to black; legs slightly lighter than body. Head alutaceous, with sparse setae on lower face and postgena; 1.1 × as broad as high and slightly narrower than mesosoma in frontal view; 1.9 x as broad as long in dorsal view. Broadest part of head in frontal view at mid-height of lower face. Gena alutaceous-reticulate, only slightly broadened behind eye in frontal view, narrower than transverse diameter of eye; gena in lateral view at least 2.0 × narrower than transverse diameter of eye in the dorsal part of eye; ventral part of gena 2.0 × as broad as dorsal part. Malar space alutaceous, with striae radiating from clypeus and reaching to half-length of malar space; eye 3.0 × as high as length of malar space; malar sulcus absent. Inner margins of eyes strongly converging ventrally. POL 1.7 × as long as OOL, OOL 2.7 × as long as diameter of lateral ocellus and slightly longer than LOL, all ocelli ovate, of the same size. Antennal toruli located above mid-height of eyes. Transfacial distance 1.25 × as long as height of eye; diameter of antennal torulus 1.8 × as great as distance between them, distance between torulus and eye 1.5 × as long as diameter of torulus; lower face smooth with white setae; slightly elevated median area and area between toruli smooth and shining, without setae. Clypeus impressed, trapezoid, broader than high, delicately coriaceous, with a few setae scattered all over; ventrally rounded, emarginate, without median incision; anterior tentorial pit large, rounded, deep, epistomal sulcus broad and deep, clypeo-pleurostomal line well impressed. Frons, interocellar area, vertex uniformly reticulate, without striae and setae; area under central ocellus impressed, smooth, glabrous; occiput alutaceous, with dense setae; postocciput glabrous, with numerous delicate longitudinal interrupted parallel striae; postgena smooth, with few setae; posterior tentorial pit large, elongated, area below impressed; occipital foramen slightly shorter than height of postgenal bridge; hypostomal carina emarginate, continuing into strong postgenal sulci which diverge until occipital foramen, ending in posterior tentorial pit. Antenna nearly as long as body, with 12 flagellomeres (suture between F 11 and F 12 indistinct), pedicel longer than broad, F 1 shorter than length of scape + pedicel, 1.3 × as long as F 2, F 2 slightly longer than F 3, F 3 = F 4, subsequent flagellomeres shorter and nearly equal in length, F 12 slightly longer than F 11; placodeal sensilla on F 5 – F 12. Mesosoma longer than high, with sparse setae on pronotum laterally, on mesopleural triangle, mesoscutellum and lateral area of propodeum. Pronotum smooth, with setae laterally, piliferous points along dorsal edge; anterolateral edge of pronotum smooth, glabrous, without foveae; propleuron smooth, with sparse white setae. Mesoscutum longer than broad (greatest width measured across mesoscutum level with base of tegulae), uniformly alutaceous-reticulate. Notaulus complete, deep, posteriorly strongly converging and broader than anteriorly, with smooth, glabrous bottom; at posterior end the distance between notauli shorter than distance between notaulus and side of mesoscutum; anterior parallel line indistinct, hardly traceable; parapsidal line marked with impressed stripe; median mesoscutal line absent; parascutal carina broad, reaching notaulus. Mesoscutellum trapezoid, longer than broad, broadest part in posterior 1 / 3; center part of mesoscutellum smooth, glabrous, rugose posteriorly and laterally, overhanging metanotum, with a few long setae. Mesoscutellar foveae transverse, broader than high, with smooth, glabrous bottom, divided by a narrow stripe. Mesopleuron entirely smooth, with setae only along ventral edge; mesopleural triangle smooth, with dense white setae and piliferous points; dorsal and lateral axillar areas smooth, with setae; axillula with delicate parallel longitudinal striae; subaxillular bar smooth, glabrous, with nearly parallel sides, posteriorly slightly shorter than height of metanotal trough; metapleural sulcus reaching mesopleuron at half of its height, lower part delimiting smooth area with few setae, upper part of sulcus indistinct. Metascutellum rugose, as high as height of smooth, glabrous ventral impressed area; metanotal trough smooth, with few setae; central propodeal area lyre-shaped, smooth, glabrous, with net of strong rugae in most posterior part; lateral propodeal carinae strong, broad and high, bent outwards in posterior 1 / 3; lateral propodeal area smooth, with long white setae and piliferous points. Nucha with longitudinal sulci dorsally and laterally and a net of irregular rugae. Tarsal claws with basal lobe. Fore wing longer than body, hyaline, with short dense cilia on margin, veins distinct, radial cell open, 4.1 × as long as broad; Rs and R 1 nearly reaching wing margin; areolet small, triangular, closed, distinct. Rs + M light pigmented, hardly traceable, visible on 1 / 2 of distance from areolet to basalis, its projection reaching basalis at half of its height. Metasoma longer than head + mesosoma, longer than high in lateral view; 2 nd metasomal tergum extending to 2 / 3 length of metasoma in dorsal view, with white setae anterolaterally, without micropunctures; all subsequent terga with rare, weak, very delicate micropunctures. Hypopygium with micropunctures, prominent part of ventral spine of hypopygium 3.8 – 4.0 × as long as broad in ventral view with some sparse setae ventrally. Body length 1.7 – 1.9 mm (n = 5). Gall (Fig. 83). Small leaf galls on underside of leaf, 3 mm in diameter with small point in centre of gall, shaped rather like an onion or garlic bulb, pinkish to reddish-brown.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFEDFFC2FF8AA110FCE4FDCC.taxon	biology_ecology	Biology. Only the asexual generation is known, which induces galls on Q. pungens (section Quercus, subsection Polymorphae) and the section Quercus, subsection Leucomexicana oaks: Q. arizonica, Q. oblongifolia, Q. turbinella (Burks 1979). The asexual galls mature by October – November, and adults emerge by April.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFEDFFC2FF8AA110FCE4FDCC.taxon	distribution	Distribution. USA: Arizona, New Mexico (Burks 1979).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFE9FFCEFF8AA01CFD85FEC8.taxon	description	Figs 84 – 96	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFE9FFCEFF8AA01CFD85FEC8.taxon	materials_examined	Type examined. HOLOTYPE: Asexual female “ 5541 … ”, “ Kern Co. I. XI. 92. Cala ”, “ Coquilletti coll. ”, red label, “ Type No. 13722 USNM ”, handwriting label “ Philonix californica Beutnm. ” deposited in USNM, examined by GM. Additional material. One female labeled as “ Sta Barbara Nat. For. Cal., Liebre Sum-t. ”, “ Q. dumosa ”, “ cut out Novem. 10 ”, Weld’s handwriting label “ Trichoteras californicum (Beutm.) ”.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFE9FFCEFF8AA01CFD85FEC8.taxon	diagnosis	Diagnosis. The only Feron species with rudimentary fore wings and indistinct veins. Re-description. Asexual female (Figs 84 – 95). Head, antennae, mesosoma, metasoma uniformly rusty brown; legs slightly lighter. Head delicately coriaceous, frons rugoso-coriaceous, with sparse setae on lower face and postgena, slightly higher than broad and slightly broader than mesosoma in frontal view; 1.9 × as broad as long in dorsal view. Broadest part of head in frontal view at mid-height of head. Gena alutaceous-reticulate, not broadened behind eye in frontal view, narrower than transverse diameter of eye; gena in lateral view at least 2.0 × narrower than transverse diameter of eye at the dorsal part of eye; ventral part of gena 2.0 × broader than dorsal part. Malar space alutaceous, with striae radiating from clypeus and reaching eye; eye 2.2 × as high as length of malar space; malar sulcus absent. Inner margins of eyes only slightly converging ventrally. POL 2.5 × as long as OOL, OOL 3.2 × as long as diameter of lateral ocellus and nearly equal to LOL, lateral ocelli small, black, central ocellus light brown, at least 2.0 × as large as lateral ocellus. Antennal toruli located above mid-height of eyes. Transfacial distance 1.4 × as long as height of eye; diameter of antennal torulus equal to distance between them, distance between torulus and eye 1.3 × as long as diameter of torulus; lower face alutaceous to delicately coriaceous, with white setae; slightly elevated median area delicately coriaceous, glabrous, without setae; area between torulus and eye with delicate striae. Clypeus impressed, quadrangular, as broad as high, delicately coriaceous, with a few setae scattered all over; ventrally rounded, emarginate, without median incision; anterior tentorial pit large, rounded, deep, epistomal sulcus broad and deep, clypeo-pleurostomal line well impressed. Frons, interocellar area, vertex, occiput uniformly reticulate, with a few delicate striae and setae; area under central ocellus impressed, smooth, glabrous; postocciput glabrous, with numerous delicate longitudinal interrupted parallel striae; postgena smooth, with few setae; posterior tentorial pit large, elongated, area below impressed; occipital foramen slightly shorter than height of postgenal bridge; hypostomal carina emarginate, continuing into postgenal sulci which diverge until occipital foramen. Antenna longer than head + mesosoma, with 12 flagellomeres (suture between F 11 and F 12 indistinct), flagellomeres gradually broadened towards apex, pedicel longer than broad, F 1 as long as scape + pedicel, 1.3 × as long as F 2, F 2 slightly longer than F 3, F 3 = F 4, F 5 slightly shorter than F 4, subsequent flagellomeres gradually shorter, F 12 slightly shorter than F 11; placodeal sensilla on F 5 – F 12. Mesosoma higher than long, with rare setae. Pronotum delicately coriaceous, with some striae laterally, with sparse setae; propleuron coriaceous, with sparse, scattered setae. Mesoscutum longer than broad (greatest width measured across mesoscutum level with base of tegulae), uniformly coriaceous-reticulate. Notaulus complete, deep, posteriorly strongly converging and broader than anteriorly, with smooth, glabrous bottom; at posterior end the distance between notauli shorter than distance between notaulus and side of mesoscutum; anterior parallel line and parapsidal line indistinct, hardly traceable; median mesoscutal line narrow but distinct; parascutal carina broad, reaching notaulus. Mesoscutellum trapezoid, longer than broad, broadest part in posterior 1 / 3; disc of mesoscutellum uniformly rugose, only just overhanging metanotum, with a few long setae. Mesoscutellar foveae only slightly broader than high, with smooth, glabrous bottom, well-delimited all around by strong carina, divided by an elevated narrow carina. Mesopleuron delicately coriaceous, with transverse delicate striae at mid height, with setae only along ventral edge; mesopleural triangle smooth, with dense white setae and piliferous points; dorsal and lateral axillar areas smooth, with setae; axillula with delicate parallel longitudinal striae; subaxillular bar smooth, glabrous, triangular, posteriorly as high as height of metanotal trough; metapleural sulcus reaching mesopleuron in upper 1 / 3 of mesopleuron height, lower part delimiting delicately coriaceous area with a few setae, upper part of sulcus indistinct. Metascutellum rugose-coriaceous, glabrous ventral impressed area; metanotal trough smooth, glabrous; central propodeal area lyre-shaped, smooth, glabrous, without rugae; lateral propodeal carinae strong, broad and high, bent outwards in posterior 1 / 3; lateral propodeal area alutaceous to smooth, with long white setae and piliferous points. Nucha with irregular short rugae dorsally and laterally. Tarsal claws with small basal lobe. Fore wing rudimentary, as long as head + mesosoma but not reaching the middle of the metasoma, with indistinct veins. Metasoma longer than head + mesosoma, more than 2.0 × as high as mesosoma in lateral view; all metasomal tergites smooth, glabrous, 2 nd metasomal tergum extending to half-length of metasoma in dorsal view, with white setae anterolaterally, sparse micropunctures only dorsally; all subsequent terga and hypopygium without micropunctures, prominent part of ventral spine of hypopygium 5.8 × as long as broad in ventral view. Body length 2.1 mm (n = 1). Gall (Fig. 96). The monolocular spangle leaf gall is on the upper surface of the leaves, rounded, flattened disc-like, slightly elevated toward the middle, pinkish or purplish, with the apex sometimes yellowish. Sides of the gall are flat and very thin; the larval chamber is in the central elevated part; the diameter of the gall is 3 – 4 mm, height 1 mm (Beutenmueller 1911).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFE9FFCEFF8AA01CFD85FEC8.taxon	biology_ecology	Biology. Only the asexual generation is known, which induces galls on Q. cornelius-mulleri, Q. douglasii and Q. dumosa (section Quercus, subsection Dumosae). The gall matures by November and the adult emerges in January. Distribution. USA: California.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFE5FFD5FF8AA318FD14FEC8.taxon	description	Figs 97 – 115	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFE5FFD5FF8AA318FD14FEC8.taxon	materials_examined	Types examined. One sexual female “ Boston. V. 31. Mass. C. H. Clarke ”, “ Beut. Coll. rec’dl 1939 ”, “ D. clarkei Beut. ”; three pins with 2 sexual females and four males “ Wtby ”, “ Q. alba Phila Acad. ”, red label “ D. clarkei Paratype ”. Nine pins with red label “ Type ”, “ Massach. ”, “ H. F. Bassett Coll. ”; one pin with Bassett handwriting label “ Callirhytis clarkei Bass. Type ” deposited in AMNH, NYC, examined by GM.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFE5FFD5FF8AA318FD14FEC8.taxon	diagnosis	Diagnosis. As in F. amphorus (asex), F. crystallinum (sex) and F. dumosae (sex), sexual females have a brown to chestnut brown body, rarely darker; inner margins of eyes are parallel or only slightly converging ventrally; the frons is flat, not or only slightly bulging in frontal view; the mesoscutum is smooth or partially alutaceous anteriorly and glabrous; the mesoscutellum with irregular rugae at least in lateral and posterior parts, sometimes the dorsocentral part is smooth, shining, without piliferous points. Differs from F. crystallinum and F. dumosae in the transfacial distance which is longer than height of the eye, the eye is less than 3.0 × as high as length of the malar space and the pronotum with carinae going across entire lateral surface. Differs from F. amphorus in the characters mentioned at couplet 20 in the key. Males are characterised by brown or chestnut body, notaulus reaching the pronotum, the mesoscutellum with irregular rugae at least in lateral and posterior parts, without piliferous points; as in F. dumosae. However, F. clarkei has F 1 1.3 × as long as F 2 (1.6 × as long as F 2 in F. dumosae) and the transfacial distance is longer than height of the eye (as long as or slightly shorter than height of eye in F. dumosae).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFE5FFD5FF8AA318FD14FEC8.taxon	description	Re-description. Sexual female (Figs 97 – 108). Head and mesosoma brown to chestnut, smooth, shining, antenna and legs light brown. Head alutaceous, with sparse white setae on lower face, 1.2 × as broad as high and slightly broader than mesosoma in frontal view, 2.0 × as broad as long in dorsal view. Gena alutaceous, slightly broadened behind eye in frontal view, narrower than transverse diameter of eye in lateral view. Malar space alutaceous, shining, with delicate striae radiating from clypeus and nearly reaching eye, malar sulcus absent; eye 2.8 × as high as length of malar space. Eyes slightly converging ventrally. POL 1.3 × as long as OOL, OOL 2.8 × as long as diameter of lateral ocellus and 1.5 × as long as LOL, all ocelli ovate, of same size. Transfacial distance 1.3 × as long as height of eye; diameter of antennal torulus slightly longer than distance between them, distance between torulus and eye slightly longer than diameter of torulus; lower face alutaceous, with a few white setae, without striae; slightly elevated median area alutaceous, glabrous, without setae. Clypeus rectangular, nearly 2.0 × as broad as high, smooth, with long setae; ventrally rounded, not emarginate and without median incision; anterior tentorial pit large, rounded, indistinct, epistomal sulcus distinct, clypeo-pleurostomal line narrow, inconspicuous. Frons uniformly reticulate, without striae and setae, interocellar area reticulate. Frons, interocellar area uniformly alutaceous, without striae and setae. Vertex and occiput alutaceous, without striate and without white setae; postocciput smooth, glabrous; postgena in most part alutaceous, smooth, glabrous along occipital foramen, postgenal bridge and hypostomal; posterior tentorial pit large, ovate, area below impressed; occipital foramen higher than height of postgenal bridge; hypostomal carina emarginate, continuing into postgenal sulci which strongly diverge toward occipital foramen, postgenal bridge anteriorly as broad as occipital foramen. Antenna longer than head + mesosoma, extending to half-length of metasoma, with 12 flagellomeres, pedicel slightly longer than broad, flagellomeres slightly broadened towards apex; F 1 2.0 x as long as pedicel and slightly longer than F 2; F 2 1.3 × as long as F 3; F 3 shorter than F 4, F 4 longer F 5, F 5 = F 6, subsequent flagellomeres nearly equal in length; placodeal sensilla on F 4 – F 11. Mesosoma slightly longer than high, with sparse white setae, denser on lateral propodeal area. Pronotum laterally smooth, shining, with numerous delicate striae radiating from posterior end and extending to half-length of pronotum; propleuron smooth, with few setae. Mesoscutum smooth shining, alutaceous only along anterior 1 / 5, with sparse white setae, slightly longer than broad (greatest width measured across mesoscutum level with base of tegulae). Notaulus complete, deep, broad, with smooth bottom, posteriorly broader and slightly converging; anterior parallel line indistinct, marked with smooth line, extending to 1 / 3 of mesoscutum length; parapsidal line indistinct, invisible; median mesoscutal line absent; parascutal carina broad, reaching notaulus. Mesoscutellum trapezoid, slightly longer than broad, glabrous, with net of strong irregular rugae, posteriorly rounded, overhanging metanotum; disc of mesoscutellum in dorsocentral part smooth, shining. Mesoscutellar foveae well defined, separated by narrow elevated coriaceous central carina, ovate, with smooth, glabrous bottom. Mesopleuron smooth, shining, with some delicate transverse subparallel striae; speculum smooth, shining; mesopleural triangle smooth, glabrous, with some delicate striae and sparse white setae; dorsal and lateral axillar areas delicately coriaceous, with a few white setae; subaxillular bar smooth, glabrous, with parallel sides, as high as height of metanotal trough, slightly higher in posterior end; metapleural sulcus reaching mesopleuron slightly above half of its height, delimiting coriaceous area, upper part of sulcus distinct. Metascutellum smooth, glabrous, slightly shorter than height of smooth, glabrous ventral impressed area; metanotal trough smooth, glabrous, without setae; central propodeal area smooth, glabrous, with irregular rugae; lateral propodeal carinae bent slightly outwards at mid-height; lateral propodeal area smooth, with dense white setae and piliferous points. Nucha with numerous sulci dorsally and laterally. Tarsal claws toothed, with basal lobe. Fore wing longer than body, hyaline, with cilia on margin, veins light brown, hardly visible, radial cell open, 3.5 × as long as broad; R 1 and Rs reaching wing margin; areolet indistinct. Rs + M narrow, inconspicuous, its projection reaching basalis at its mid height. Metasoma as long as head + mesosoma, longer than high in lateral view; 2 nd metasomal tergum extending to half-length of metasoma in dorsal view, without setae and micropunctures; all terga smooth, glabrous, without micropunctures. Hypopygium without micropunctures, prominent part of ventral spine of hypopygium 3.0 × as long as broad in ventral view, without setae ventrally. Body length 1.4 – 2.1 mm (n = 4). Male (Figs 110 – 115). Similar to female but darker, transfacial distance subequal to height of eye, ocelli slightly bigger, POL 2.0 × as long as OOL, OOL 1.5 × as long as diameter of lateral ocellus and as long as LOL, antenna with 13 flagellomeres, pedicel globular, F 1 slightly curved and incised, placodeal sensilla on all flagellomeres; legs lighter than in female; metasoma shorter than head + mesosoma; body size as in female. Gall (Fig. 109). Galls in terminal and axillary buds, many-celled, smooth, bare, often hidden by bud scales.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFE5FFD5FF8AA318FD14FEC8.taxon	biology_ecology	Biology. Only the sexual generation is known, inducing bud galls on Q. alba (section Quercus, subsection Albae) and Q. stellata (section Quercus, subsection Stellatae). Adults emerge in early spring until May (Ashmead 1896).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFE5FFD5FF8AA318FD14FEC8.taxon	distribution	Distribution. USA: MA, MO (Burks 1979).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFFEFFD7FF8AA318FDD4FBD5.taxon	description	Figs 116 – 123	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFFEFFD7FF8AA318FDD4FBD5.taxon	diagnosis	Diagnosis. Sexual females are similar to F. apiarium (asex), F. kingi (sex) and F. pattersonae (sex) and are characterised by a black body, frons is flat, not or only slightly bulging in frontal view, inner margins of eyes never strongly converging ventrally, the mesoscutum is smooth, glabrous or partially alutaceous anteriorly; the notaulus is complete reaching the pronotum; the mesopleuron is entirely smooth without transverse striae in central part; the mesoscutellum is uniformly alutaceous with numerous setae on piliferous points. Nevertheless, F. comatum differs from these species in the torulus which is located halfway up the head; scape, pedicel, F 1 – F 2 are yellowish; legs including hind coxa are yellowish and the prominent part of the ventral spine of the hypopygium without setae ventrally. Males are similar to F. kingi and F. pattersonae and are characterised by a black body, ocelli are moderately or not elevated above the frons, notaulus reaching the pronotum and the mesoscutellum is uniformly alutaceous with numerous setae on piliferous points. In F. comatum F 1 equal in length to scape + pedicel, slightly broadened and curved, flagellomeres lighter than scape and pedicel (F 1 longer than scape + pedicel, straight not broadened and curved, flagellomeres, scape and pedicel uniformly coloured in F. kingi and F. pattersonae). Re-description. After Weld (1952 b), with modifications. Sexual female (Figs 116 – 121). Body black; mandibles, palpi, base of antenna and legs yellowish-white. Head transverse in dorsal view, as broad as mesosoma; gena not broadened behind eye, broader than high in frontal view; inner margins of eyes converging ventrally; length of malar space around 3.0 × shorter than height of eye, malar sulcus absent. Antenna with 12 flagellomeres, F 1 shorter than scape + pedicel and shorter than F 2 + F 3. Pronotum, mesoscutum, mesopleuron smooth, glabrous, shining. Notaulus narrow, complete. Mesoscutellar foveae smooth, shallow; mesoscutellar disk smooth, punctate and pubescent behind, overhanging propodeum. Lateral propodeal carinae bent slightly outwards. Fore wing pubescent, ciliate on margin; radial cell opened, 5.0 × as long as broad, veins brown, areolet small. Tarsal claws toothed, with strong basal lobe. Metasoma as high as long, all terga smooth, visible on dorsal margin. Prominent part of ventral spine of hypopygium stout, 2.0 × as long as broad in ventral view, without setae. Body length 1.45 – 2.15 mm (n = 6) (Weld 1952 b). Male. Like the female, head broader than mesosoma. Antennae with 13 flagellomeres, F 1 equal in length to scape + pedicel, 1.45 × as long as F 2, slightly excavated and curved, lighter than scape and pedicel. Metasoma with short petiole. Body length 1.45 – 1.8 mm. Gall (Figs 122 – 123). Conical, 3.0 by 1.4 mm, tan when mature, thin walled, covered with crinkly white matted hairs. Produced singly at edge of leaf. The gall is difficult to distinguish from the sexual galls of F. crystallinum, F. dumosae and F. kingi, although this species has an eastern distribution rather than Pacific slope (but see also diagnosis to species above).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFFEFFD7FF8AA318FDD4FBD5.taxon	biology_ecology	Biology. Only the sexual generation is known, inducing galls on Q. alba (section Quercus, subsection Albae). Galls mature in early spring; adults emerge in late April – May.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFFEFFD7FF8AA318FDD4FBD5.taxon	distribution	Distribution. USA: VA (Weld 1952 b).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFFCFFDFFF8AA626FBD6F8FC.taxon	description	Figs 124 – 149	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFFCFFDFFF8AA626FBD6F8FC.taxon	materials_examined	Type examined. Asexual female. A type female No. 10488 is deposited in the Entomology Type Collection at the Academy of Natural Sciences of Philadelphia, not examined by the authors. We have examined several pictures from several sexual specimens (females coded 1332063, and 1332065; males coded 1132047, and 1132055) made by Peter T. Oboyski. Additional material. Three asexual females “ USA, CA, Salt Springs, ex Q. douglasii, coll. 2004.02.29., leg. K. Schick ”; 2 asexual females “ USA, CA, Diablo, ex Q. douglasii, 1925.10.15, leg. A. Kinsey ”; 2 asexual females “ USA, CA, 30 km SW of Williams, CA 2, galltype 165, ex Q. douglasii, 2007.11.02., leg. J. A. Nicholls ”; 2 asexual females “ USA, CA, Copperopolis, CA 969, galltype 165, ex Q. douglasii, 2007.11.06., leg. J. A. Nicholls ”; 1 sexual female “ USA, CA, Dye Creek Preserve, CA 1042, spCAl 6 _ 1, ex Q. douglasii, coll. 2008.03.30., leg. J. A. Nicholls ”. In the general collection of the USNM there are specimens with Bassett handwriting labels (not type material) and our asexual females are conspecific with those of Bassett.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFFCFFDFFF8AA626FBD6F8FC.taxon	diagnosis	Diagnosis. Asexual females belong to the Feron species group in which the pronotum is without carinae, with dense setae and piliferous points; the mesoscutum is dark brown between notauli in anterior 1 / 3 length of the mesoscutum; as in F. pattersonae (asex) and F. sulfureum (asex). Differs from F. pattersonae in the trapezoid head in frontal view (ovate in F. pattersonae) and the mesoscutellar foveae divided by a central carina (fused in F. pattersonae). Morphologically most similar is F. sulfureum but in F. crystallinum the pronotum is coriaceous, with piliferous points and distal flagellomeres broader than basal; for other characters see couplet 26 in the key. Sexual females are brown to chestnut brown, rarely darker; inner margins of eyes are parallel or only slightly converging ventrally, the frons is flat, not or only slightly bulging in frontal view; the mesoscutum is smooth, glabrous or alutaceous anteriorly; the mesoscutellum with irregular rugae at least in lateral and posterior parts, sometimes dorsocentral part is smooth, shining, without piliferous points; these characters are shared with F. amphorus (asex), F. clarkei (sex) and F. dumosae (sex). Differs from F. amphorus and F. clarkei in the transfacial distance which is as long as or slightly shorter than the height of the eye, the eye more than 3.6 × as high as length of the malar space; the pronotum laterally with short carinae only along posterior margin. Differs from F. dumosae by characters mentioned at couplet 19 in the key. Males are different from all other Feron males in the inner margins of eyes which are slightly diverging ventrally, the notaulus is complete, mesoscutellar foveae absent, present in the form of a transverse smooth anterior impression, continuing into smooth mesoscutellar disc. Re-description. Asexual female (Figs 124 – 134). Head chestnut brown, posteriorly darker, clypeus darker, mandibles and palpi chestnut brown, antenna chestnut brown, with darker F 4 – F 12; mesosoma predominantly brown; pronotum brown with darker anterolateral part, propleuron dark brown; mesoscutum brown with black marks between notauli in anterior half and next to lateral lines; mesoscutellum uniformly brown; mesopleuron brown, ventrally dark brown to black; propodeum dark brown to black; metasoma uniformly dark brown; legs chestnut brown, with darker coxae. Head with sparse setae, denser on lower face, 1.2 × as broad as high and slightly broader than mesosoma in frontal view; 2.1 × as broad as long in dorsal view. Gena reticulated, not broadened behind eye in frontal view, narrower than transverse diameter of eye in lateral view. Malar space reticulate, with striae radiating from clypeus and not reaching eye; eye 2.7 × as high as length of malar space; malar sulcus absent. Inner margins of eyes parallel. POL 1.7 × as long as OOL, OOL 1.9 × as long as diameter of lateral ocellus and slightly longer than LOL, all ocelli ovate, of same size. Transfacial distance slightly longer than height of eye; toruli located in the upper half of head and frons definitely shorter than lower face, diameter of antennal torulus 1.3 × as long as distance between them, distance between torulus and eye 1.2 × as long as diameter of torulus; lower face smooth with white setae; slightly elevated median area coriaceous, with few setae. Clypeus quadrangular, slightly broader than high, smooth, with a few long setae scattered all over; ventrally rounded, emarginate, without median incision; anterior tentorial pit small, rounded, distinct, epistomal sulcus distinct, clypeo-pleurostomal line well impressed. Frons, interocellar area, vertex uniformly reticulate, without striae and setae; area under central ocellus impressed, smooth, glabrous; occiput and postocciput alutaceous; postgena reticulate, with a few setae; posterior tentorial pit large, elongated, area below impressed; occipital foramen as high as height of postgenal bridge; hypostomal carina emarginate, continuing into strong postgenal sulci which strongly diverge toward occipital foramen, postgenal bridge anteriorly slightly broader than occipital foramen. Antenna longer than head + mesosoma, with 12 flagellomeres; F 6 – F 12 about 2.0 × broader than F 1 – F 5; pedicel 1.7 × as long as broad; F 1 1.8 × as long as pedicel and slightly longer than F 2; F 2 slightly longer than F 3; all subsequent flagellomeres shorter, F 12 as long as F 11; placodeal sensilla on F 5 – F 12. Mesosoma as long as high, with a few white setae, denser along propleura and on lateral propodeal area. Pronotum coriaceous in posterolateral area, with dense setae laterally with piliferous points; propleuron smooth, glabrous. Mesoscutum slightly longer than broad (greatest width measured across mesoscutum level with base of tegulae), rugose-reticulate between notauli in anterior half and laterad to notauli, smooth and glabrous in between notauli in posterior half; entirely and uniformly with dense long white setae and some distinct piliferous points. Notaulus complete, shallow, posteriorly converging and broader than anteriorly, with smooth, glabrous bottom; in most posterior part distance between notauli shorter than distance between notaulus and side of mesoscutum; anterior parallel line distinct, elevated or impressed, smooth, glabrous, reaching to half-length of mesoscutum; parapsidal line marked with broad smooth, glabrous stripe; median mesoscutal line indistinct, very short, present at the most posterior end; parascutal carina broad, reaching notaulus. Mesoscutellum ovate, slightly longer than broad, broadest part posteriorly, circumscutellar carina complete; uniformly rugoso-coriaceous, overhanging metanotum, with sparse long setae. Mesoscutellar foveae quadrangular, as broad as high, with smooth, glabrous bottom, divided by a rugose elevated triangular area. Mesopleuron entirely smooth, with setae only along ventral edge; mesopleural triangle coriaceous, with dense white setae; dorsal and lateral axillar areas smooth, glabrous, without setae; axillula with delicate parallel longitudinal striae; subaxillular bar smooth, glabrous, triangular, posteriorly as high as height of metanotal trough; metapleural sulcus reaching mesopleuron at half of its height; lower part separating smooth, glabrous area, with dense setae, upper part of sulcus also distinct. Metascutellum coriaceous, as high as height of smooth, glabrous ventral impressed area; metanotal trough smooth, with few setae; central propodeal area lyre-shaped, smooth, with a few strong short longitudinal rugae; lateral propodeal carinae strong, broad and high, bent outwards in posterior 1 / 3; lateral propodeal area smooth, with long white setae, each seta with piliferous point at the base. Nucha with numerous irregular rugae. Tarsal claws with basal lobe. Fore wing longer than body, hyaline, with short dense cilia on margin, veins brown, radial cell open, 3.8 × as long as broad; Rs and R 1 not reaching wing margin; areolet small, triangular, closed and distinct. Rs + M distinct in 2 / 3 of its length, its projection reaching basalis at half of its height. Metasoma longer than head + mesosoma, longer than high in lateral view; 2 nd metasomal tergum smooth, extending to 5 / 6 length of metasoma in dorsal view, with patch of dense white setae anterolaterally, without micropunctures; all subsequent terga and hypopygium smooth, with fine micropunctures; prominent part of ventral spine of hypopygium 6.8 × as long as broad in ventral view, with short white setae ventrally, which do not extend beyond apex of spine. Body length 2.1 – 2.3 mm (n = 3). Sexual generation. According to Doutt (1960), specimens used for the description of the sexual females and males were housed in the University of California, Albany. Currently they are deposited in the Essig Museum (University of California, Berkeley, Peter T. Oboyski pers. comm.). These specimens were not examined by the authors; however, photos were taken from females and males by Peter T. Oboyski and sent to authors. For material examined by the authors, see above in Additional material. Sexual female (Figs 136 – 145). Head, mesosoma dark brown to black; scape, pedicel and F 1 light brown, all subsequent flagellomeres uniformly dark brown; legs yellowish-brown, except dark brown to black coxae; metasoma chestnut brown. Head slightly transverse, with sparse setae, denser on lower face and along inner margins of eyes, 1.2 × as broad as high and as broad as mesosoma in frontal view; 2.1 × as broad as long in dorsal view. Gena reticulated, not broadened behind eye in frontal view, 2.7 × narrower than transverse diameter of eye in lateral view. Malar space alutaceous, with striae radiating from clypeus and reaching eye; malar sulcus absent; eye 3.8 × as high as length of malar space. Inner margins of eyes parallel or very slightly converging ventrally. POL 2.2 × as long as OOL, OOL 1.5 × as long as diameter of lateral ocellus and slightly shorter than LOL, all ocelli ovate, of same size. Transfacial distance as long as height of eye or slightly longer; toruli located in the upper half of head and frons definitely shorter than lower face, diameter of antennal torulus 1.6 × as long as distance between them, distance between torulus and eye 1.2 × as long as diameter of torulus; lower face coriaceous with white setae, above malar space smooth and glabrous; slightly elevated median area coriaceous, with few setae. Clypeus rectangular, around 1.6 × as broad as high, coriaceous, with long setae along ventral edge; ventrally rounded, emarginate, without median incision; anterior tentorial pit small, rounded, distinct, epistomal sulcus distinct, clypeo-pleurostomal line well impressed. Frons, interocellar area, vertex uniformly alutaceous, without striae and setae; area under central ocellus impressed, smooth, glabrous; occiput and postocciput alutaceous, postgena alutaceous, with few setae; posterior tentorial pit large, elongated, area below impressed; occipital foramen as high as height of postgenal bridge; hypostomal carina emarginate, continuing into strong postgenal sulci which diverge strongly toward occipital foramen, postgenal bridge anteriorly slightly broader than occipital foramen. Antenna longer than head + mesosoma, with 12 flagellomeres; all flagellomeres nearly equal in width, F 1 narrower than F 2; pedicel longer than broad; F 1 1.4 × as long as pedicel, shorter than scape + pedicel and nearly equal in length to F 2; F 2 longer than F 3, F 3 longer than F 4; all subsequent flagellomeres shorter and nearly equal in length; F 12 slightly longer than F 11; placodeal sensilla on F 2 – F 12. Mesosoma slightly longer than high, with a few white setae along propleura and on lateral propodeal area. Pronotum smooth with sparse setae laterally, with parallel short delicate wrinkles along posterior edge; propleuron smooth, with scattered white setae. Mesoscutum slightly longer than broad (greatest width measured across mesoscutum level with base of tegulae), entirely smooth and glabrous without setae. Notaulus complete, deep, posteriorly converging, with smooth, glabrous bottom; at posterior end the distance between notauli just shorter than distance between notaulus and side of mesoscutum; anterior parallel line impressed, smooth, glabrous, extending to 1 / 3 length of mesoscutum; parapsidal line marked with impressed smooth, glabrous stripe; median mesoscutal line absent; parascutal carina broad, complete. Mesoscutellum trapezoid, slightly longer than broad, broadest part posteriorly, uniformly rugoso-coriaceous, overhanging metanotum, with sparse long setae. Mesoscutellar foveae ovate, broader than high, with smooth, glabrous bottom, divided by a smooth elevated triangular area. Mesopleuron entirely smooth, with setae only along ventral edge; mesopleural triangle rugose, with dense white setae; dorsal and lateral axillar areas smooth, with some sparse setae; axillula with delicate parallel longitudinal striae; subaxillular bar smooth, glabrous, triangular, posteriorly as high as height of metanotal trough; metapleural sulcus reaching mesopleuron in lower 1 / 3 of its height; lower part separating smooth, glabrous area with dense setae, upper part of sulcus indistinct. Metascutellum smooth, glabrous, slightly higher than height of smooth, glabrous ventral impressed area; metanotal trough smooth, glabrous, without setae, with some irregular rugae; central propodeal area smooth, glabrous, without rugae; lateral propodeal carinae strong, broad and high, bent outwards in mid-height of propodeum; lateral propodeal area smooth, with long white setae, each seta with piliferous point at the base. Nucha with some irregular rugae. Tarsal claws with basal lobe. Fore wing longer than body, hyaline, with short dense cilia on margin, veins brown, radial cell open, 4.1 × as long as broad; Rs and R 1 not reaching wing margin; areolet small, triangular, closed and distinct. Rs + M distinct in 1 / 3 of its length, its projection reaching basalis at half of its height. Metasoma longer than head + mesosoma, higher than long in lateral view; 2 nd metasomal tergum smooth, extending to half-length of metasoma in dorsal view, with patch of dense white setae anterolaterally, without micropunctures; all subsequent terga and hypopygium smooth without micropunctures; prominent part of ventral spine of hypopygium 3.7 × as long as broad in ventral view, with short white setae ventrally, which do not extend beyond apex of spine. Body length 1.9 mm (n = 1). Male (Figs 146 – 147). Body yellowish to amber; eyes bigger, transfacial distance much shorter than height of eye; height of eye 4.3 × as high as length of malar space; ocelli much bigger, POL 6.0 × as long as OOL, OOL 0.5 × as long as diameter of lateral ocellus and much shorter than LOL, all ocelli ovate, of same size; antenna with 13 flagellomeres, longer than body, F 1 slightly curved, not excavated laterally; placodeal sensilla on all flagellomeres; mesoscutum glabrous, scarcely pubescent on pronotum, along notaulus, along ventral edge of mesopleuron, mesopleural triangle and side of propodeum; mesosoma smooth and shiny, pronotum laterally and anterior part of mesoscutum alutaceous; mesoscutellar foveae absent; metasoma with long petiole, shorter than mesosoma. Gall. Asexual galls (Fig. 135). Bristly-haired gall masses 35 mm long by 25 mm wide on the underside of leaves composed of small, individual, elliptical or spherical, monothalamous galls, 12 – 14 mm high, 7 mm in diameter. Each gall usually with a slightly curved beak at the apex and a sparse coating of crystalline white, rose pink, red, or brown hairs (Russo 2021). Sexual galls (Fig. 148 – 149) monolocular, they are mostly on the upper surface of leaves, singly or in small groups, green with straw coloured apex, conical, slightly curved. The gall has numerous long cottony, white hairs projecting laterally, which are longer than the greatest width of the gall. The gall is 2.5 mm in length, with the base 1.0 mm tapering to the tip. The position of the gall is indicated on the opposite (usually lower) side of leaf by a pale coloured elliptical swelling (Doutt 1960). The gall is difficult to distinguish from other similar sexual galls such as F. comatum, F. dumosae and F. kingi.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFFCFFDFFF8AA626FBD6F8FC.taxon	biology_ecology	Biology. Alternate asexual and sexual generations were matched by Doutt (1960). Alternate sexual and asexual generations are also confirmed herein using DNA data, with four individuals (three asexual females, one sexual female) sequenced for cytb and three individuals (two asexual females, one sexual female) sequenced for cytb. Cytb sequences grouped into two haplotypes that were 0.23 % divergent (GenBank accessions KX 683596, MZ 030743, OQ 446195 – OQ 446196) and ITS 2 sequences were identical among the three individuals (GenBank accessions OQ 448237 – OQ 448239). Asexual galls in autumn on leaves, adults emerge in January – February; sexual galls in spring, adults emerge in March. Both generations develop on oaks from section Quercus, subsection Dumosae: Q. douglasii, Q. dumosa and Q. garryana.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFFCFFDFFF8AA626FBD6F8FC.taxon	distribution	Distribution. USA: California.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFFCFFDFFF8AA626FBD6F8FC.taxon	discussion	Comments. The sexual males and females from the experimental material deposited in the Essig Museum by Doutt all have an amber body colour which differs from the chestnut brown sexual females collected by JN and examined by GM, and also from the colour Doutt described for sexual generation adults. We consider this simply to represent within-species chromatic variation (as is known for other Feron species) since the remainder of the diagnostic characters, host plant, and distribution are consistent with Doutt’s description.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFF5FFDBFF8AA2E0FCCDFA14.taxon	description	Figs 150 – 161	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFF5FFDBFF8AA2E0FCCDFA14.taxon	materials_examined	Additional material. Four asexual females with the following label: “ MEX- 542, UNSIS, Mihauatlán de Porfirio Díaz, Oaxaca, México, ex Q. obtusata, (10. xi. 2018) 05. ii. 2019: 4 females, leg. R. Clark ”.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFF5FFDBFF8AA2E0FCCDFA14.taxon	diagnosis	Diagnosis. The only Feron species with the mesoscutum smooth, partially alutaceous anteriorly, glabrous and with the mesoscutellum uniformly reticulate. Re-description. Asexual female (Figs 150 – 160). Body dark brown; antenna and legs yellow to yellowish-brown. Head alutaceous, with sparse white setae on lower face, 1.2 × as broad as high and slightly broader than mesosoma in frontal view, 1.8 × as broad as long in dorsal view. Gena alutaceous, slightly broadened behind eye in frontal view, narrower than transverse diameter of eye in lateral view. Malar space alutaceous, shining, with delicate striae radiating from clypeus, some of which reaching eye, malar sulcus absent; eye 3.2 × as high as length of malar space. Eyes slightly converging ventrally. POL 2.1 × as long as OOL, OOL 1.6 × as long as diameter of lateral ocellus and slightly longer than LOL, all ocelli ovate, of same size. Transfacial distance slightly longer than height of eye; diameter of antennal torulus 1.8 × as long as distance between them, distance between torulus and eye 1.2 × as long as diameter of torulus; lower face alutaceous, glabrous, without setae, without striae; slightly elevated median area alutaceous, glabrous, without setae. Clypeus rectangular, nearly 2.0 × as broad as high, smooth, glabrous, without setae; ventrally rounded, not emarginate and without median incision; anterior tentorial pit large, rounded, indistinct, epistomal sulcus distinct, broad, clypeo-pleurostomal line narrow, distinct. Frons, interocellar area uniformly alutaceous, without striae and setae. Vertex and occiput alutaceous, with a few white setae; postocciput smooth, glabrous; postgena in most part alutaceous, smooth glabrous along occipital foramen; posterior tentorial pit large, ovate, area below impressed; occipital foramen higher than height of postgenal bridge; hypostomal carina emarginate, continuing into postgenal sulci which diverge strongly toward occipital foramen, postgenal bridge anteriorly as broad as occipital foramen. Antenna longer than head + mesosoma, with 12 flagellomeres (suture between F 12 and F 11 indistinct), pedicel 2.0 × as long as broad, flagellomeres not broadened towards apex; F 1 1.5 × as long as pedicel and 1.3 × as long as F 2; F 2 = F 3 = F 4; F 4 slightly longer than F 5, all subsequent flagellomeres nearly equal in length; placodeal sensilla on F 4 – F 12. Mesosoma slightly higher than long, with a few setae, denser on lateral propodeal area. Pronotum laterally smooth, shining, with numerous delicate concentric striae; propleuron smooth, with few setae. Mesoscutum smooth shining, alutaceous only along anterior 1 / 5, with sparse white setae, slightly longer than broad (greatest width measured across mesoscutum level with base of tegulae). Notaulus complete, deep, broad along entire length, with smooth bottom, posteriorly broader and slightly converging; anterior parallel line indistinct, marked with smooth line, extending to 1 / 4 of mesoscutum length; parapsidal line indistinct or invisible; median mesoscutal line absent; parascutal carina broad, reaching notaulus. Mesoscutellum trapezoid, slightly longer than broad, uniformly reticulate, posteriorly rounded, overhanging metanotum. Mesoscutellar foveae in the form of a narrow semilunar anterior impression of mesoscutellum, with smooth, glabrous bottom, not divided by median carina. Mesopleuron smooth, shining, with delicate indistinct transverse subparallel striae, visible in central part at mid height; speculum smooth, shining; mesopleural triangle smooth, with sparse white setae; dorsal and lateral axillar areas smooth, shining, with a few white setae; subaxillular bar smooth, glabrous, triangular, at posterior end higher than height of metanotal trough; metapleural sulcus reaching mesopleuron at half of its height, delimiting smooth, shining area, upper part of sulcus strong, distinct. Metascutellum smooth, glabrous, shorter than height of smooth, glabrous ventral impressed area; metanotal trough smooth, glabrous, without setae; central propodeal area smooth, glabrous, with irregular rugae; lateral propodeal carinae bent slightly outwards at mid height; lateral propodeal area smooth, with white setae and piliferous points Nucha with longitudinal sulci laterally, smooth, glabrous dorsally. Tarsal claws toothed, with basal lobe. Fore wing longer than body, hyaline, with cilia on margin, veins dark brown, distinct, radial cell open, 4.7 × as long as broad; Rs not reaching wing margin, R 1 very short; areolet present. Rs + M distinct, extending to 4 / 5 of distance between areolet and basalis, its projection reaching basalis at its mid height. Metasoma as long as head + mesosoma, higher than long in lateral view; 2 nd metasomal tergum extending to 1 / 3 length of metasoma in dorsal view, with setae anterolaterally; all terga smooth, glabrous, without micropunctures. Hypopygium without micropunctures, prominent part of ventral spine of hypopygium 7.5 × as long as broad in ventral view, with few short setae ventrally. Body length 0.9 – 1.9 mm (n = 3). Gall (Fig. 161). Small, naked, hollow cylinders scattered on the underside of leaves. Each gall is regularly cylindrical, a bit swollen below the tip, a bit restricted basally, up to 5.0 mm in length and 2.5 mm in diameter. The exterior of the gall fairly smooth, entirely naked except for a blue or purplish scurf. The body of gall hollow, open at top, the open cavity penetrating to a third or a half of the gall, separated from the larval cell by a thin partition; larval cell floored with a thicker partition beneath which another cavity is to be found. Young galls straw and light rose pink, sometimes touched more purple red, the whole touched with an ashy-blue scurf; older galls becoming burnt red to purple brown or dark, dirty brown. Each gall separated, often occurring in great numbers and dense masses, usually on under surfaces, rarely on upper surfaces of leaves.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFF5FFDBFF8AA2E0FCCDFA14.taxon	biology_ecology	Biology. Only the asexual generation is known, inducing galls on Q. deserticola (= Q. texcocana) (section Quercus, subsection Leucomexicana). Galls mature in autumn; adults emerge from February to mid-March.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFF5FFDBFF8AA2E0FCCDFA14.taxon	distribution	Distribution. Mexico: Mexico City, Puebla (Kinsey 1937).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFF0FFA6FF8AA464FCE4FDCC.taxon	description	Figs 162 – 183	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFF0FFA6FF8AA464FCE4FDCC.taxon	materials_examined	Type examined. HOLOTYPE: Asexual female “ Tijeras, N. M. ”, “ Cut out Nov. 1.21 ”, “ Quercus pungens ”, red label “ Type No. 27190 USNM ”, “ Diplolepis discalis Weld ” deposited in USNM, examined by GM. Specimen data and images available at http: // n 2 t. net / ark: / 65665 / 3629 a 7172 - 440 c- 48 df-a 198 - 8 b 1 c 39 f 1 fa 61. Material examined. Two asexual females labelled as “ USA, Arizona, Chiricahua Mtns summit, AZ 258, spAZl 2, galltype 60, Q. arizonica, leg. J. A. Nicholls, 2007.10.26. ”	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFF0FFA6FF8AA464FCE4FDCC.taxon	diagnosis	Diagnosis. The only asexual Feron species with yellowish to reddish brown body, the head with frons bulging in frontal view and inner margins of eyes converging strongly ventrally, the mesoscutum uniformly alutaceous-reticulate, glabrous and with the mesoscutellum smooth and glabrous centrally, while posteriorly and laterally rugose. Re-description. Asexual female (Figs 162 – 172, 174 – 183). Head, mesosoma, mandibles, mouthparts, legs and metasoma uniformly yellowish to light brown; antenna, central propodeal area and posterior visible tergites slightly darker than rest of body. Two colour extremes (yellow and reddish-brown) are illustrated. Head alutaceous, with a few sparse setae on lower face; rounded, 1.2 × as broad as high and slightly narrower than mesosoma in frontal view; 1.6 × as broad as long in dorsal view. Broadest part of head in frontal view at mid-height of lower face. Gena alutaceous-reticulate, not broadened behind eye in frontal view, narrower than transverse diameter of eye; gena in lateral view equally narrow along entire length of eye. Malar space alutaceous, with some striae radiating from clypeus and reaching to half-length of malar space; eye 4.5 × as high as length of malar space; malar sulcus absent. Inner margins of eyes strongly converging ventrally. POL 1.9 × as long as OOL, OOL 2.4 × as long as the diameter of lateral ocellus and slightly longer than LOL, all ocelli ovate, of the same size. Antennal toruli located above mid-height of eyes. Transfacial distance 1.2 × as long as height of eye; diameter of antennal torulus 2.0 × as long as distance between them, distance between torulus and eye 1.4 × as long as diameter of torulus; lower face smooth with a few white setae; slightly elevated median area and area between toruli smooth, glabrous, without setae. Clypeus impressed, rectangular, broader than high, alutaceous, with a few setae scattered all over; ventrally rounded, emarginate, without median incision; anterior tentorial pit large, rounded, deep, epistomal sulcus broad and deep, clypeo-pleurostomal line well impressed. Frons, interocellar area, vertex uniformly alutaceous, without striae and setae; area under central ocellus impressed, smooth, glabrous; occiput alutaceous, with dense setae; postocciput glabrous, with numerous delicate longitudinal interrupted parallel striae; postgena smooth, with few setae; posterior tentorial pit large, elongated, area below impressed; occipital carina black, clearly visible beside occipital foramen; occipital foramen slightly shorter than height of postgenal bridge; hypostomal carina emarginate, continuing into strong postgenal sulci which diverge until occipital foramen, ending in posterior tentorial pit. Antenna nearly as long as body, scape, pedicel, F 1 – F 5 light brown, subsequent flagellomeres dark brown to black, with 12 flagellomeres (suture between F 11 and F 12 indistinct), pedicel longer than broad, F 1 longer than length of scape + pedicel, 1.2 × as long as F 2, F 2 slightly longer than F 3, F 3 = F 4, subsequent flagellomeres shorter, broader and nearly equal in length, F 12 slightly longer than F 11; placodeal sensilla on F 5 – F 12. Mesosoma longer than high, with rare setae on pronotum laterally, mesopleural triangle, mesoscutellum and lateral area of propodeum. Pronotum smooth, with setae laterally, delicate transverse parallel striae along posterior edge; anterolateral edge of propodeum smooth, glabrous, without foveae; propleuron smooth, with sparse white setae. Mesoscutum longer than broad (greatest width measured across mesoscutum level with base of tegulae), uniformly alutaceous-reticulate. Notaulus complete, deep, posteriorly strongly converging and broader than anteriorly, with smooth, glabrous bottom; at posterior end the distance between notauli shorter than distance between notaulus and side of mesoscutum; anterior parallel line and parapsidal line indistinct, not traceable; median mesoscutal line in the form of a short broad smooth triangle; parascutal carina broad, reaching notaulus. Mesoscutellum trapezoid, longer than broad, broadest part in posterior 1 / 3; center part of mesoscutellum smooth, glabrous, rugose posteriorly and laterally, overhanging metanotum, with a few long setae. Mesoscutellar foveae in the form of a transverse, semilunar impression, broader than high, with smooth, glabrous bottom, circumscutellar carina present. Mesopleuron smooth, with setae along ventral edge, with very delicate indistinct parallel striae in anterior half; mesopleural triangle smooth, with dense white setae and piliferous points; dorsal and lateral axillar areas smooth, with setae; axillula with delicate parallel longitudinal striae; subaxillular bar smooth, glabrous, triangular, posteriorly slightly higher than height of metanotal trough; metapleural sulcus reaching mesopleuron at half of its height, lower part delimiting smooth area with few setae, upper part of sulcus indistinct. Metascutellum coriaceous, as high as height of smooth, glabrous ventral impressed area; metanotal trough smooth, with few setae; central propodeal area lyre-shaped, smooth, glabrous; lateral propodeal carinae strong, broad and high, bent outwards in posterior 1 / 3; lateral propodeal area smooth, with long white setae and piliferous points. Nucha with longitudinal sulci dorsally and laterally and a net of irregular rugae. Tarsal claws with basal lobe. Fore wing longer than body, with light brown veins, margin with dense long cilia; radial cell open, 4.5 × as long as broad, R 1 and Rs nearly reaching wing margin; areolet triangular, delimited by indistinct light brown veins; Rs + M indistinct, not traceable. Tarsal claws with basal lobe. Metasoma longer than head + mesosoma, longer than high in lateral view; all metasomal tergites smooth, glabrous, 2 nd metasomal tergum extending to 2 / 3 length of metasoma in dorsal view, with white setae anterolaterally, without micropunctures; all subsequent terga with rare, weak, very delicate micropunctures. Hypopygium with micropunctures, prominent part of ventral spine of hypopygium 7.8 × as long as broad in ventral view. Body length 1.7 – 1.8 mm (n = 2). Gall (Fig. 173). A spangle gall, on the underside of leaf, 3.6 – 4.0 mm diameter, monolocular, yellow-green when young and growing, turn brown when mature, with raised rim and raised center, convex on upper surface, underside concave, the transversely placed larval chamber occupying the full height of the gall. A single or a few galls on one leaf (Weld 1926).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFF0FFA6FF8AA464FCE4FDCC.taxon	biology_ecology	Biology. The asexual generation is only known, which induces galls on Q. pungens (section Quercus, subsection Polymorphae), Q. arizonica and Q. turbinella (both section Quercus, subsection Leucomexicana). Galls mature in late autumn; adults were cut out from galls in November; probably overwintering in galls and emerging in spring.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFF0FFA6FF8AA464FCE4FDCC.taxon	distribution	Distribution. USA: Arizona, New Mexico (Burks 1979).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF8DFFA0FF8AA53DFDC3FC38.taxon	description	Figs 184 – 188	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF8DFFA0FF8AA53DFDC3FC38.taxon	materials_examined	Type examined. HOLOTYPE: Asexual female “ Sequoia Nat. Park, Cal. ”, “ Cut out Nov. 10 ”, “ Q. garryana ”, red label “ Type No. 27191 USNM ”, “ Diplolepis discularis Weld ” deposited in USNM, examined by GM. The type is present, however absent from the Type list. Specimen data and images available at http: // n 2 t. net / ark: / 65665 / 3 c 82 fa 469 - eef 2 - 491 e-bb 0 d-b 1778 bff 7 d 05	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF8DFFA0FF8AA53DFDC3FC38.taxon	diagnosis	Diagnosis. Asexual females belong to the group of Feron species in which the pronotum laterally with longitudinal carinae and the mesoscutum alutaceous to coriaceous, rugose-reticulate, reticulate, with piliferous points; as in F. kingi (asex) and F. tubifaciens (asex). Differs from those two species in the entirely black body; the frons bulging in frontal view, ocelli not elevated above the head; toruli located at the midheight of the head; the median mesoscutal line in the form of a short triangle. Re-description. After Weld (1926) with modifications (Figs 184 – 186). Predominantly black, base of antenna and legs beyond coxae brownish; face and mesonotum with scattered setae. Head coriaceous, rounded bulging upward in frontal view and as broad as mesosoma in frontal view; gena not broadened behind eye, occiput not concave; Transfacial distance equal to or slightly longer than height of eye; malar space about 1 / 3 of eye height, without malar sulcus. Toruli located at mid height of head. Antenna longer than head + mesosoma with 12 flagellomeres, distal flagellomeres slightly broader; the antennomere lengths are 10: 6: 13: 10: 9: 8: 8: 7.5: 7: 7: 6.5: 6: 6: 8. Pronotum with delicate parallel striae laterally near tegula. Mesoscutum high-arched, longer than broad, finely coriaceous, with piliferous points, notaulus complete, deep, with smooth bottom; median mesoscutal line in the form of a short triangle. Mesopleuron smooth, glabrous, with small aciculate area in front. Tarsal claws with strong basal lobe. Fore wing hyaline, pubescent, ciliate on margins, veins brown; radial cell around 3.8 × as long as broad; areolet present, Rs-M vein reaching 1 / 8 of the distance to basal. Disk of mesoscutellum delicately coriaceous anterocentrally, with strong rugae posteriorly and laterally; sides bounded by two straight diverging lines; mesoscutellar foveae rounded, separated medially, with smooth, glabrous bottom, not delimited by carinae posteriorly. Metascutellum rugose. Lateral propodeal carina bent strongly outwards, central propodeal area narrower anteriorly, broadened posteriorly, neck rugose. Metasoma longer than head + mesosoma, 2 nd metasomal tergum with sparsely pubescent areas at base; prominent part of the ventral spine of hypopygium 8.0 × as long as broad in ventral view. Body length 1.6 – 1.95 mm. Gall (Figs 187 – 188). Disk-shaped, about 6 mm in diameter by 1 mm thick, single or scattered in small numbers on underside of leaf in autumn. The upper surface is slightly concave, the edge sinuate, the margin reflexed nearly to the leaf surface. The transversely placed larval cell occupies the full height of the gall. Exit hole on top surface (Weld 1926).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF8DFFA0FF8AA53DFDC3FC38.taxon	biology_ecology	Biology. The asexual generation only is known, inducing galls on Q. garryana (section Quercus, subsection Dumosae). Galls mature in September, adults were cut out in November.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF8DFFA0FF8AA53DFDC3FC38.taxon	distribution	Distribution. USA: CA (Weld 1926).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF8BFFACFF8AA645FD85FB8C.taxon	description	Figs 189 – 202	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF8BFFACFF8AA645FD85FB8C.taxon	materials_examined	Types examined. One paratype sexual female and gall “ Stanford Univ. California. May 10 ”, “ Quercus dumosa ”, “ 1758 ”, red label “ Paratype No. 63009 USNM ”. Specimen data and images available at http: // n 2 t. net / ark: / 65665 / 3 c 1624 a 96 - f 517 - 4880 - 83 da-c 8 c 458 cfaf 3 a	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF8BFFACFF8AA645FD85FB8C.taxon	diagnosis	Diagnosis. Sexual females of this species are characterised by the brown to chestnut brown body, rarely darker; inner margins of eyes parallel or only slightly converging ventrally; the frons is flat, not or only slightly bulging in frontal view; the mesoscutum is smooth or partially alutaceous anteriorly and glabrous; the mesoscutellum with irregular rugae at least in lateral and posterior parts, sometimes dorsocentral part smooth, shining, without piliferous points; as in F. amphorus (asex), F. clarkei (sex) and F. crystallinum (sex). Differs from F. amphorus and F. clarkei in the transfacial distance which is as long as or slightly shorter than the height of eye, the eye more than 3.6 × as high as length of the malar space; the pronotum laterally with short carinae only along posterior margin. Differs from F. crystallinum in the characters mentioned at couplet 19 in the key. Males are characterised by a brown or chestnut brown body, the notaulus reaching the pronotum, the mesoscutellum with irregular rugae at least in lateral and posterior parts without piliferous points; as in F. clarkei. However, in F. dumosae F 1 1.6 × as long as F 2 (1.3 × as long as F 2 in F. clarkei) and the transfacial distance as long as or slightly shorter than the height of eye (longer than the height of the eye in F. clarkei).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF8BFFACFF8AA645FD85FB8C.taxon	description	Re-description. Sexual female (Figs 189 – 201). Head, mesosoma, metasoma dark brown to brown, antenna, mouthparts and legs yellow, with slightly darker coxae. Head alutaceous, with sparse white setae on lower face, 1.2 × as broad as high and slightly broader than mesosoma in frontal view, 2.0 × as broad as long in dorsal view. Gena alutaceous, not broadened behind eye in frontal view, narrower than transverse diameter of eye in lateral view. Malar space alutaceous, shining, with delicate striae radiating from clypeus and reaching eye, malar sulcus absent; eye 3.6 × as high as length of malar space. Eyes slightly converging ventrally. POL 2.0 × as long as OOL, OOL 1.6 × as long as diameter of lateral ocellus and slightly longer than LOL, all ocelli ovate, of same size. Transfacial distance as long as height of eye or slightly shorter; diameter of antennal torulus as long as distance between them, distance between torulus and eye 1.3 × as long as diameter of torulus; lower face alutaceous, glabrous, without white setae, without striae; slightly elevated median area alutaceous, glabrous, without setae. Clypeus rectangular, nearly 2.0 × as broad as high, smooth, with long setae; ventrally rounded, not emarginate and without median incision; anterior tentorial pit large, rounded, indistinct, epistomal sulcus distinct, clypeo-pleurostomal line inconspicuous. Frons uniformly alutaceous, without striae and setae, interocellar area alutaceous. Vertex and occiput alutaceous, with sparse white setae; postocciput smooth, glabrous; postgena in the most part delicately coriaceous, smooth and glabrous along occipital foramen, postgenal bridge and hypostomata; posterior tentorial pit large, ovate, area below impressed; occipital foramen as high as height of postgenal bridge; hypostomal carina emarginate, continuing into postgenal sulci which diverge strongly toward occipital foramen, postgenal bridge anteriorly as broad as occipital foramen. Antenna longer than head + mesosoma, with 12 flagellomeres, pedicel slightly longer than broad, flagellomeres slightly broadened towards apex; F 1 2.0 × as long as pedicel and 1.2 × as long as F 2; F 2 1.2 × as long as F 3; F 3 = F 4, F 5 = F 6 = F 7, subsequent flagellomeres shorter, nearly equal in length; placodeal sensilla indistinct on all flagellomeres. Mesosoma slightly longer than high, with sparse white setae, denser on lateral propodeal area. Pronotum smooth, shining, with sparse white setae, with some delicate striae anteroventrally; propleuron delicately coriaceous. Mesoscutum alutaceous in anterior half, smooth, shining posteriorly between notauli and alongside notauli, with sparse white setae, slightly longer than broad (greatest width measured across mesoscutum level with base of tegulae). Notaulus complete, shallow, hardly traceable in anterior part, bottom smooth, posteriorly broader and slightly converging; anterior parallel line indistinct, marked with smooth line, extending to 1 / 3 of mesoscutum length; parapsidal line distinct, marked with smooth line; median mesoscutal line absent; parascutal carina broad, reaching notaulus. Mesoscutellum trapezoid, slightly longer than broad, glabrous, shining, with net of irregular rugae, posteriorly rounded, overhanging metanotum. Mesoscutellar foveae separated by narrow elevated coriaceous central carina, ovate, with smooth, glabrous bottom. Mesopleuron smooth, shining, with delicate transverse subparallel striae in central part, absent aneriorly; speculum smooth, shining; mesopleural triangle smooth, with some delicate striae and sparse white setae; dorsal and lateral axillar areas delicately coriaceous, with a few white setae; subaxillular bar smooth, glabrous, with parallel sides, as high as height of metanotal trough, slightly higher at posterior end; metapleural sulcus reaching mesopleuron slightly above half of its height, delimiting coriaceous area, upper part of sulcus distinct. Metascutellum smooth, glabrous, slightly shorter than height of smooth, glabrous ventral impressed area; metanotal trough smooth, glabrous, without setae; central propodeal area delicately coriaceous, with a few irregular rugae; lateral propodeal carinae bent slightly outwards at mid-height; lateral propodeal area smooth, shining, with sparse white setae on piliferous points. Nucha very short with numerous sulci dorsally and laterally. Tarsal claws toothed, with basal lobe. Fore wing longer than body, hyaline, with cilia on margin, veins light brown, hardly visible, radial cell open, 4.6 × as long as broad; R 1 and Rs reaching wing margin; areolet small, distinct. Rs + M narrow, visible along 1 / 2 of distance between areolet and basalis, its projection reaching basalis at its mid height. Metasoma as long as head + mesosoma, longer than high in lateral view; 2 nd metasomal tergum extending to 2 / 3 length of metasoma in dorsal view, without setae and micropunctures; all terga smooth, glabrous, without micropunctures. Hypopygium without micropunctures, prominent part of ventral spine of hypopygium short, slightly longer than broad in ventral view, without setae. Body length 1.4 – 2.2 mm (n = 7) (Weld 1957). Male. Similar to female, but antenna with 13 flagellomeres, F 1 1.6 × as long as F 2, slightly curved and excavated. Body length 1.5 – 1.75 mm. Gall (Fig. 202). Small, 2 – 3 mm, conical gall on leaf edge, slightly pubescent, fresh galls red-pinkish to pale brown, leaf blade twists slightly at the gall. The gall is difficult to distinguish from other similar sexual galls of F. comatum, F. crystallinum and F. kingi.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF8BFFACFF8AA645FD85FB8C.taxon	biology_ecology	Biology. Rosenthal (1968) and Rosenthal & Koehler (1971) erroneously stated that Liodora dumosae was the sexual generation of Andricus kingi. Dailey & Menke (1980) subsequently corrected this mistake by demonstrating that Rosenthal & Koehler had mis-identified their sexual generation wasps as L. dumosae and instead had reared the then unknown sexual generation of A. kingi. Evans (1972) proposed that L. dumosae was the sexual generation of Andricus pattersonae and transferred the later to Liodora under the new name combination L. pattersonae; this error was reiterated by Dailey & Menke (1980). However, this matching with A. pattersonae is in disagreement with genetic data presented herein (see under F. pattersonae), nor did Evans perform any rigorous biological experiments to match generations. In addition, Evans appears to have mis-identifed his asexual generation galls (Fig 15 of Evans 1972) as they are too small and pale to be those of A. pattersonae and instead look like those of the new species F. rucklei described herein. Thus, until rigorous rearing experiments are conducted or genetic data are obtained, we consisder Feron dumosae to be a valid distinct species known only from its sexual generation. Galls occur on multiple oaks from section Quercus, subsection Dumosae: Q. douglasii, Q. dumosa, Q. garryana and Q. lobata. They mature in May and adults emerge soon after.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF8BFFACFF8AA645FD85FB8C.taxon	distribution	Distribution. USA: California.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF87FFABFF8AA6DCFD85FDB4.taxon	description	Figs 203 – 215	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF87FFABFF8AA6DCFD85FDB4.taxon	materials_examined	Types examined. HOLOTYPE: sexual female of Andricus gigas “ Mercred Falls Cal., gall 3.28.20. ”, “ Q. douglasii, Kinsey coll. ”, pink “ A. gigas female, Holo-COTYPE ” deposited in AMNH, NYC, examined by GM. Andricus crenatus HOLOTYPE: asexual female, “ Los Gatos, Cal. ”, “ Q. dumosa ”, “ 1735 ”, red label “ Type No. 60117 USNM ”, handwriting label “ Andricus crenatus Weld ”. Specimen data and images available at http: // n 2 t. net / ark: / 65665 / 3 ddf 41 be 9 - a 5 bb- 4 dc 8 - 91 b 3 - 45 e 7 d 8 fadfb 6 Additional material. Asexual females: 2 females “ USA: CA, Del Puerto Canyon, Q. douglasii, leg. R. Challis, 2004.10.21 ”; 3 females “ USA: CA, Clearlake, Q. douglasii, CA 17, galltype 135, leg. J. A. Nicholls, 2007.11.03. ”; 3 females “ USA: CA, 30 km SW of Williams, Q. douglasii, CA 17, galltype 135, leg. J. A. Nicholls, 2007.11.02 ”. One male “ USA: CA, Dye Creek Preserve, Q. douglasii, CA 1037, gall type 239, leg. J. A. Nicholls, 2008.03.30 ”.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF87FFABFF8AA6DCFD85FDB4.taxon	diagnosis	Diagnosis. Asexual females belong to the group of Feron species in which the body is never black; the head is rounded or trapezoid to triangular in frontal view, ocelli are not elevated above the frons; eyes are parallel or very slightly converging ventrally, the transfacial distance is equal or longer than the height of eye; toruli located above the mid-height of eyes; the eye is less than 3.0 × as high as the length of the malar space; lateral ocelli are smaller, OOL at least 2.5 × as long as the diameter of ocellus, or if shorter then the head and mesosoma are not yellowish or light brown; the pronotum laterally with longitudinal carinae; the mesoscutum alutaceous to coriaceous, rugose-reticulate, reticulate, without piliferous points and the mesopleuron with a transverse reliculate-carinate band at mid-height; these charcters are shared with F. parmula (asex), F. tibiale (asex), F. syndicorum (asex) and F. stellulum (asex). Differs from F. tibiale and F. syndicorum in the gena which is not broadened behind the eye in frontal view. It differs from F. parmula in having a malar space with a few delicate striae radiating from the clypeus, mesoscutellar foveae are defined and the prominent part of the ventral spine of the hypopygium 4.5 × as long as broad in ventral view; see more characters at couplet 37 in the key. The most similar species is F. stellulum but in F. gigas the antenna has 12 flagellomeres (11 in F. stellulum), the eye 2.2 × as high as the length of the malar space (longer in F. stellulum), veins are pale (brown in F. stellulum), the areolet absent (present in F. stellulum) and the central propodeal area without rugae (with rugae in F. stellulum). Sexual females of this species belong to the group of Feron species with a black body, the frons is flat, not or only slightly bulging in frontal view, inner margins of eyes never strongly converging ventrally, the mesoscutum uniformly alutaceous-reticulate, glabrous and the mesoscutellum is uniformly alutaceous with numerous setae on piliferous points; as in F. comatum (sex), F. apiarium (asex), F. kingi (sex) and F. pattersonae (sex). Feron gigas differs from these species in having notauli distinct only at their posterior end but discontinuous or absent at their finely coriaceous anterior end and the mesopleuron is smooth with transverse striae in its central part. Males differ from all other Feron in the notaulus which is narrow, distinct only posteriorly, fragmented or absent anteriorly where mesoscutum is delicately coriaceous.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF87FFABFF8AA6DCFD85FDB4.taxon	description	Re-description. Asexual female (Figs 203 – 214). Body, antenna, legs, uniformly rusty brown, some specimens uniformly dark brown. Head reticulate, with sparse setae on lower face, gena and posteriorly, 1.2 × as broad as high and slightly narrower than mesosoma in frontal view; 2.0 × as broad as long in dorsal view. Gena reticulate, not broadened behind eye in frontal view, in lateral view dorsal part of gena at least 2.0 × narrower than transverse diameter of eye and much broader on ventral part. Malar space alutaceous, shining, with striae radiating from clypeus and reaching to 1 / 3 of malar space length; eye 2.2 × as high as length of malar space; malar sulcus absent. Inner margins of eyes parallel. POL 1.6 × as long as OOL, OOL 2.1 × as long as diameter of lateral ocellus and slightly longer than LOL, all ocelli ovate, of same size. Antennal toruli located above mid-height of eyes. Transfacial distance 1.3 × as long as height of eye; diameter of antennal torulus 1.6 × as long as distance between them, distance between torulus and eye 1.4 × as long as diameter of torulus; lower face delicately coriaceous, with white setae; slightly elevated median area coriaceous, without setae. Clypeus impressed, rectangular, 1.5 × as broad as high, delicately coriaceous, with transverse striae, with a few setae scattered all over; ventrally rounded, emarginate, without median incision; anterior tentorial pit large, rounded, deep, epistomal sulcus broad and deep, clypeo-pleurostomal line well impressed. Frons, interocellar area, vertex uniformly reticulate, without striae and setae; area under central ocellus impressed, smooth, glabrous; occiput, postocciput reticulate; postgena smooth, with few setae; posterior tentorial pit large, elongated, area below impressed; occipital carina black, clearly visible beside occipital foramen; occipital foramen as high as height of postgenal bridge; hypostomal carina emarginate, continuing into strong postgenal sulci which diverge until half the height of postgenal bridge, beyond which sulci are parallel and run alongside foramen until 1 / 3 of its height. Antenna slightly longer than head + mesosoma, with 12 flagellomeres (suture between F 12 and F 11 indistinct but present); F 1 – F 3 with sparse white setae, F 4 – F 12 with dense setae; pedicel 1.7 × as long as broad; F 1 2.1 × as long as pedicel and 1.2 × as long as F 2; F 2 = F 3, F 4 slightly shorter than F 3, F 5 = F 6 and shorter than previous; all subsequent flagellomeres shorter and equal in length; F 12 slightly longer than F 11; placodeal sensilla on F 3 – F 12. Mesosoma longer than high, with a few scattered setae. Pronotum smooth, with sparse setae along smooth anterolateral edge; with parallel transverse delicate interrupted striae laterally; propleuron alutaceous, with very sparse white setae. Mesoscutum longer than broad (greatest width measured across mesoscutum level with base of tegulae), uniformly alutaceous-reticulate. Notaulus complete, deep, posteriorly converging strongly and broader than anteriorly, with smooth and glabrous bottom; at posterior end the distance between notauli shorter than distance between notaulus and side of mesoscutum; anterior parallel line marked by smooth stripes, reaching to half-length of mesoscutum; parapsidal line indistinct, not marked; median mesoscutal line absent; parascutal carina broad, reaching notaulus. Mesoscutellum trapezoid, longer than broad, broadest part in posterior 1 / 3; center part of mesoscutellar disc rugoso-coriaceous, with stronger rugae posteriorly and laterally, overhanging metanotum, with long setae. Mesoscutellar foveae rounded, as broad as high, with smooth, glabrous bottom, divided by a triangular coriaceous elevated carina. Mesopleuron with parallel delicate transverse striae, speculum smooth, glabrous; mesopleural triangle smooth, with dense white setae and piliferous points; dorsal and lateral axillar areas smooth, with setae; axillula with delicate parallel longitudinal striae; subaxillular bar smooth, glabrous, triangular, posteriorly as high as height of metanotal trough; metapleural sulcus reaching mesopleuron above half of its height, lower part delimiting smooth area with few setae, upper part of sulcus indistinct. Metascutellum coriaceous, as high as height of smooth, glabrous ventral impressed area; metanotal trough smooth, with a few setae; central propodeal area lyre-shaped, smooth, glabrous; lateral propodeal carinae strong, broad and high, bent outwards in posterior 1 / 3; lateral propodeal area smooth, with long white setae and piliferous points. Nucha with net of irregular strong rugae dorsally and laterally. Tarsal claws with acute basal lobe. Fore wing longer than body, hyaline, with short dense cilia on margin, veins light brown, radial cell open, 4.4 × as long as broad; Rs and R 1 nearly reaching wing margin; areolet absent, Rs + M invisible. Metasoma longer than head + mesosoma, higher than long in lateral view; 2 nd metasomal tergum extending to 2 / 3 length of metasoma in dorsal view, with patch of dense white setae anterolaterally, with band of micropunctures posteriorly; all subsequent terga and hypopygium with dense micropunctures; prominent part of ventral spine of hypopygium 4.7 × as long as broad in ventral view, with few short white setae ventrally. Body length 1.2 – 1.6 mm (n = 10). The description of the sexual generation (female, male and gall) is given after Kinsey (1922), with some modifications. Sexual female. Head black, mandibles rufous brown; antenna brown, basal three or four antennomeres yellowish brown; mesosoma and metasoma dark brown to black. Legs yellowish-brown, femora especially hind femora darker, coxae brown, tips of tarsi darker; finely and not densely hairy. Head finely coriaceous, about as broad as mesosoma in frontal view, gena only slightly broadened behind eyes; frons and lower face minutely punctate, with sparse, fine setae on sides of head. Antenna with delicate setae, with 12 flagellomeres, F 1 slightly longer than F 2. Pronotum smooth, shining with sparse setae on dorsal edge, with some delicate striae along posterior edge. Mesoscutum mainly smooth and shining, coriaceous anteriorly; notaulus fine but visible only posteriorly, less evident, discontinuous or absent anteriorly where area finely coriaceous; median mesoscutal line, anterior parallel line and parapsidal line absent; mesoscutellum finely rugose, hairy, with small, elevated, smooth, shining area at apex; mesoscutellar foveae in the form of an anterior arcuate impression, shallow, smooth. Mesopleuron mostly smooth, shining with delicate striae only centrally. Fore wing hyaline, with fine, brown hairs, with cilia on margins; veins brown; areolet moderately small to closed; cubitus very fine, not reaching basalis; radial cell long and open, second abscissa of radius somewhat curved; first abscissa nearly straight, without projection. Tarsal claws simple. Metasoma protruding dorsally, 2 nd metasomal tergum occupying nearly half-length of metasoma, with a few setae anteroventrally; ventral spine of hypopygium yellow-piceous; smooth, shining, short, with a few setae ventrally. Body length 1.5 – 2.0 mm (n = 3). Male. Differs from the female as follows: antenna entirely brown, 13 flagellomeres; areolet smaller, metasoma short, with moderately long petiole. Body length around 1.5 mm. Galls. Sexual galls are small, 1 – 2 mm in diameter, round, pale yellow, on catkin coming off catkin stem at same place as stamens, sometimes on edge of leaf. Asexual spangle galls (Fig. 215) about 4 mm in diameter, usually on the upper side of the leaf, saucer shaped, with a thin crenate margin when young, with a prominent hump in center. The mature gall has a lens-shaped larval cavity inside, on the floor of which is a thin, white, circular disk with radiating prominent lines.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF87FFABFF8AA6DCFD85FDB4.taxon	biology_ecology	Biology. Alternation of sexual and asexual generations was determined by Dailey & Sprenger (1973 a). Alternate sexual and asexual generations are also confirmed herein using DNA data, with four individuals (three asexual females, one sexual male) sequenced for cytb and three individuals (two asexual females, one sexual male) sequenced for cytb. Cytb sequences were on average 0.82 % divergent (range 0 – 1.66 %; GenBank accessions KX 683598, OQ 446198 – OQ 446199) and ITS 2 sequences were identical among the three individuals except for two additional bases within a polyA region in one sample (GenBank accessions OQ 448240 – OQ 448242). This species induces galls on Q. douglasii and Q. dumosa (section Quercus, subsection Dumosae). Young asexual galls are present in August, mature in autumn; asexual adults emerge in February. Sexual galls are mature in April; adults emerge by the end of April.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF87FFABFF8AA6DCFD85FDB4.taxon	distribution	Distribution. USA: California.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF80FFB4FF8AA0C4FDEAF918.taxon	description	Figs 216 – 227 urn: lsid: zoobank. org: act: 809 B 97 CC-BE 9 E- 4 B 10 - A 15 E- 9 A 83 E 0 D 6 B 97 F	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF80FFB4FF8AA0C4FDEAF918.taxon	materials_examined	Type material. HOLOTYPE: Asexual female “ USA, CA, Friday Ridge Road, CA, Q. garryana, CA 1600 ”, coll. 20.09.2014, leg. J. DeMartini. PARATYPES (4 asexual females) “ USA, CA, Lake Berry Essa Napa County, Q. berberidifolia, CA 1752, coll. 27.10.2016, leg. J. DeMartini ”, “ USA, CA, Inspiration Point, Covelo, Q. durata, CA 1792, coll. 11.10.2011, leg. J. DeMartini ”; “ USA, CA, Q. durata, CA 1820, leg. J. DeMartini ”; USA, CA, Middletown, Lake County, CA 2386, Q. durata, coll. 29.10.2014, leg. J. DeMartini ”. The holotype and one paratype female are deposited at the USNM, 2 female paratypes at the PHDNRL, 1 female paratype at the UB.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF80FFB4FF8AA0C4FDEAF918.taxon	etymology	Etymology. Named in memory of the author G. Melika’s mother, Izabella, and in honour of G. Melika’s granddaughter who carries on the Izabella name.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF80FFB4FF8AA0C4FDEAF918.taxon	diagnosis	Diagnosis. The asexual form of this species belongs to the Feron group in which the pronotum is laterally smooth to coriaceous, without carinae, and the mesoscutum is alutaceous to coriaceous, rugose-reticulate, or reticulate, sometimes with smooth areas and piliferous points, glabrous or pubescent; as in F. atrimentum (asex), F. crystallinum (asex), F. pattersonae (asex), and F. sulfureum (asex). It differs from those species in the following combination of characters: the frons is bulging in frontal view; ocelli are not elevated above the head, the transfacial distance is 1.4 × as long as the height of eye, the eyes slightly convergent ventrally, and the metapleural sulcus reaching the mesopleuron on the upper 2 / 3 of its height. The most similar species is F. albicomus (asex) from which F. izabellae differs in having the head and mesosoma amber, the median mesoscutal line absent, mesoscutellar foveae divided by an elevated coriaceous triangle, and ventral spine of hypopygium 8.0 × as long as broad in ventral view.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF80FFB4FF8AA0C4FDEAF918.taxon	description	Description. Asexual female (Figs 216 – 226). Head, antenna, mouthparts, mesosoma, legs, metasoma uniformly light brown to yellowish; head posteriorly slightly darker. Head alutaceous-reticulate, with denser setae on lower face, slightly higher than broad and as broad as mesosoma in frontal view; 1.9 × as broad as long in dorsal view. Gena alutaceous-reticulate, slightly broadened behind eye in frontal view; gena in lateral view slightly narrower than transverse diameter of eye. Malar space delicately coriaceous, with striae radiating from clypeus and not reaching eye, malar sulcus absent; eye 2.7 × as high as length of malar space. Inner margins of eyes slightly converging ventrally. POL 1.5 × as long as OOL, OOL 2.5 × as long as diameter of lateral ocellus and 1.3 x as long as LOL, all ocelli ovate, of same size. Antennal toruli located above mid-height of eyes. Transfacial distance 1.6 × as long as height of eye; frons nearly as high as height of lower face, diameter of antennal torulus 2.1 × as long as distance between them, distance between torulus and eye equal to diameter of torulus; lower face alutaceous, with setae; slightly elevated median area and area between toruli delicately coriaceous, with a few setae. Clypeus impressed, flat, 2.0 × as broad as high, smooth, with a few long setae along ventral edge; ventrally rounded, not emarginate and without median incision; anterior tentorial pit rounded, distinct, small; epistomal sulcus distinct, clypeo-pleurostomal line well impressed. Frons, interocellar area, vertex and occiput uniformly alutaceous-reticulate, without striae and setae; postocciput and postgena alutaceous, with dense white setae; posterior tentorial pit large, elongated, area below impressed; occipital foramen shorter than height of postgenal bridge; hypostomal carina emarginate, continuing into postgenal sulci which diverge strongly toward occipital foramen, postgenal bridge anteriorly slightly broader than occipital foramen. Antenna longer than head + mesosoma, with 12 flagellomeres, pedicel longer than broad; F 1 1.3 × as long as F 2 and more than 1.9 × as long as pedicel; F 2 longer than F 3, F 4 slightly longer than F 5, F 6 = F 7 = F 8, subsequent flagellomeres nearly equal in length; F 12 = F 11, placodeal sensilla on F 6 – F 12. Mesosoma slightly longer than high, without setae. Pronotum glabrous, with delicate short inconspicuous parallel striae along posterior edge, with piliferous points; propleuron smooth, with sparse short setae. Mesoscutum uniformly alutaceous-reticulate, slightly longer than broad (greatest width measured across mesoscutum level with base of tegulae). Notaulus complete, distinctly impressed along entire length; posteriorly converging; at posterior end the distance between notauli shorter than distance between notaulus and side of mesoscutum; anterior parallel line, parapsidal and median mesoscutal line absent; parascutal carina narrow, reaching notaulus. Mesoscutellum slightly longer than broad, with subparallel sides; central part of mesoscutellum disk coriaceous, along sides and posteriorly with strong rugae, overhanging metanotum, with sparse setae. Mesoscutellar foveae distinct, slightly impressed smooth, glabrous, with elevated central carina. Mesopleuron smooth, alutaceous only in most anterodorsal part; speculum smooth, glabrous; mesopleural triangle smooth, with white setae; dorsal and lateral axillar areas smooth, with white setae; axillula with delicate parallel longitudinal striae; subaxillular bar smooth, glabrous, with subparallel sides, posteriorly as high as height of metanotal trough; metapleural sulcus reaching mesopleuron slightly above half of its height; upper part of sulcus indistinct; lower part of sulcus delimiting smooth area with dense long white setae. Metascutellum smooth, glabrous, as high as height of smooth, glabrous ventral impressed area; metanotal trough smooth, glabrous, with white setae; central propodeal area lyre-shaped, smooth, glabrous, without rugae; lateral propodeal carinae distinct, bent outwards in posterior 1 / 3 of its height; lateral propodeal area smooth, with long dense white setae. Nucha with longitudinal sulci dorsally and laterally. Tarsal claws with strong basal lobe. Fore wing longer than body, hyaline, with short cilia on margin, veins indistinct, yellowish to pale brown, radial cell open, 4.5 × as long as broad; Rs and R 1 nearly reaching wing margin; areolet small, triangular, indistinct. Rs + M indistinct, not reaching basalis, its projection reaching basalis in upper half. Metasoma longer than head + mesosoma, slightly longer than high in lateral view; 2 nd metasomal tergum extending to 1 / 3 length of metasoma in dorsal view, with numerous white setae anterolaterally, without micropunctures; all subsequent terga without micropunctures. Hypopygium without micropunctures, prominent part of ventral spine of hypopygium 5.3 × as long as broad in ventral view, with a few long white setae ventrally. Body length 1.5 – 1.8 mm (n = 5). Gall (Fig. 227). A small (up to 5 mm diameter) monolocular spangle gall on the underside of leaves. Initially a disc-shaped gall lying flat against the leaf surface, pink in middle and around the edge with cream circle in between. When galls mature the opposite sides of the disc fold up and touch. Informally called the pink bowtie gall wasp in Russo (2006, 2021).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF80FFB4FF8AA0C4FDEAF918.taxon	biology_ecology	Biology. Only the asexual generation is known which induces spangle leaf galls on Q. berberidifolia, Q. douglasii, Q. dumosa (= Q. durata), Q. garryana (all section Quercus, subsection Dumosae). Galls mature in September – October. Adults emerge soon afterwards.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF80FFB4FF8AA0C4FDEAF918.taxon	distribution	Distribution. USA: CA (authors).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF9FFFBCFF8AA568FD85FCC0.taxon	description	Figs 228 – 255	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF9FFFBCFF8AA568FD85FCC0.taxon	materials_examined	Additional material. Asexual females: 10 females “ USA, CA, Stockton, Q. lobata, leg. K. Schick, 2004.02.29 ”; 6 females “ USA, CA, Dye Creek Preserve, Q. lobata, leg. J. de Martini, 2001.09.22. ”; 28 females “ USA, CA, Clearlake, CA 29, galltype 160, Q. lobata, leg. J. A. Nicholls, 2007.11.03. ”; 46 females “ USA, CA, Delta College, Stockton, CA 905, CA 906, galltype 160, Q. lobata, leg. J. A. Nicholls, 2007.11.06. ”; 9 females “ USA, CA, Cosumnes River Preserve, CA 927, 906, galltype 160, Q. lobata, leg. J. A. Nicholls, 2007.11.07. ” Sexual generation: 6 males “ USA, CA, Dye Creek Preserve, CA 1050, galltype 237, Q. douglasii, leg. J. A. Nicholls, 2008.03.30 ”; 2 females and 1 male “ USA, CA, Quail Ridge Reserve, CA 1069, galltype 237, Q. berberidifolia, leg. J. A. Nicholls, 2008.04.04 ”; 1 female and 3 males “ USA, CA, Delta college, Stockton, CA 1047, galltype 237, Q. lobata, leg. J. A. Nicholls, 2008.03.28 ”. 3 females and 10 males: 6 males “ USA, CA, Dye Creek Preserve, Q. douglasii, coll. J. A. Nicholls, 2008.03.30; CA 1050 ”, 2 females and 1 male “ USA, CA, Quail Ridge Reserve, Q. berberidifolia, coll. J. A. Nicholls, 2008.04.04; CA 1069 ”; 1 female and 1 male “ USA, CA, Delta College, Stockton, Q. lobata, 2008.03.28; CA 1047 ”; 2 males “ USA, CA, Cosumnes River Preserve, Q. lobata, coll. J. A. Nicholls, 2008.03.28; CA 1060 ”. Specimens have been deposited at the USNM and PHDNRL.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF9FFFBCFF8AA568FD85FCC0.taxon	diagnosis	Diagnosis. Asexual females belong to the Feron species group in which the pronotum laterally has longitudinal carinae and the mesoscutum is alutaceous to coriaceous, rugose-reticulate, reticulate, with piliferous points; as in F. discularis (asex) and F. tubifaciens (asex). Differs from F. discularis in the body colour, which is never black; the frons not bulging in frontal view, ocelli are not elevated above the head; toruli located in the upper half of the head; the median mesoscutal line is absent. The most similar species is F. tubifaciens but differs in colour, the gena is broadened behind the eye in frontal view, the clypeus is smooth, the fore wing longer than the body; for other characters see couplet 29 in the key. Sexual females belong to the group of Feron species with a black body, scape to F 2 are dark brown (sometimes light brown but never yellowish), legs are reddish brown with at least the hind coxa darker, the frons is flat not or only slightly bulging in frontal view; toruli are located in the upper half of the head, inner margins of eyes never strongly converging ventrally, the mesoscutum is smooth or partially alutaceous anteriorly and glabrous, the notaulus is complete, the mesopleuron entirely smooth without transverse striae in the central part, the mesoscutellum uniformly alutaceous with numerous setae on piliferous points and the prominent part of the ventral spine of the hypopygium with setae; as in F. apiarium (asex) and F. pattersonae (sex). Differs from F. apiarium as the eyes converge ventrally, the eye at least 4.0 × as high as length of the malar space, antennomeres with short setae, OOL 1.5 × as long as diameter of the lateral ocellus, the notaulus sometimes weakly impressed anteriorly and the prominent part of the ventral spine of the hypopygium with few short setae ventrally. Most similar morphologically is F. pattersonae; see diagnostic characters at couplet 17 in the key. Males are characterised by a black body, ocelli are moderately or not elevated above the frons, the notaulus reaches the pronotum and the mesoscutellum is uniformly alutaceous with numerous setae on piliferous points; these characters are as in F. comatum and F. pattersonae, but in F. kingi F 1 longer than scape + pedicel, straight, not broadened and curved; all flagellomeres, scape and pedicel are uniformly coloured (F 1 equal in length to scape + pedicel, slightly broadened and curved; all flagellomeres lighter than the scape and pedicel in F. comatum) and the head is ovate in frontal view, inner margins of eyes are parallel, space between central elevated area of the lower face to the lateral margin of the eye is sculptured, OOL shorter than the diameter of the lateral ocellus (triangular head, inner margins of eyes converging vertrally, central elevated area smooth and OOL as long as diameter of the lateral ocellus in F. pattersonae). Re-description. Asexual female (Figs 228 – 238). Body, antenna, legs, uniformly rusty brown, some specimens uniformly dark brown. Head with white setae, denser on lower face, occiput, postocciput and postgena, slightly broader than high and as broad as mesosoma in frontal view; 1.9 × as broad as long in dorsal view. Gena alutaceous, broadened behind eye in frontal view, narrower than transverse diameter of eye in lateral view. Malar space with striae radiating from clypeus and reaching eye; eye 2.9 × as high as length of malar space; malar sulcus absent. Inner margins of eyes parallel. POL 2.2 × as long as OOL, OOL 1.6 × as long as diameter of lateral ocellus and slightly shorter than LOL, all ocelli ovate, lateral ocelli slightly larger than central ocellus. Transfacial distance slightly longer than height of eye; toruli located in the upper half of head and frons definitely shorter than lower face, diameter of antennal torulus 1.9 × as long as distance between them, distance between torulus and eye nearly as long as diameter of torulus; lower face smooth with white setae; slightly elevated median area and area between toruli smooth. Clypeus ovate, slightly broader than high, smooth, with a few long setae scattered all over; ventrally rounded, emarginate, without median incision; anterior tentorial pit small, rounded, distinct, epistomal sulcus distinct, clypeo-pleurostomal line well impressed. Frons, interocellar area, vertex, occiput uniformly reticulate, without striae and setae; area under central ocellus impressed, smooth, glabrous; postocciput and postgena reticulate, with a few setae; posterior tentorial pit large, elongated, area below impressed; occipital foramen as high as height of postgenal bridge; hypostomal carina emarginate, continuing into distinct postgenal sulci which strongly diverge toward occipital foramen, postgenal bridge anteriorly slightly broader than occipital foramen. Antenna longer than head + mesosoma, with 12 flagellomeres; all flagellomeres with dense setae; pedicel 1.7 × as long as broad; F 1 2.0 × as long as pedicel and 1.4 × as long as F 2; F 2 = F 3; F 4 to F 6 equal in length, F 7 to F 11 equal in length, F 12 slightly shorter than F 11; placodeal sensilla on F 4 – F 12. Mesosoma slightly longer than high, with a few white setae. Propleura alutaceous with setae. Pronotum smooth, glabrous dorsally; laterally coriaceous, with dense setae; propleuron smooth, with dense white setae. Mesoscutum longer than broad (greatest width measured across mesoscutum level with base of tegulae), uniformly coriaceous; entirely and uniformly with scattered long white setae. Notaulus complete, shallow, posteriorly converging and broader than anteriorly, bottom smooth, glabrous; at posterior end the distance between notauli shorter than distance between notaulus and side of mesoscutum; anterior parallel line and parapsidal line indistinct or invisible; median mesoscutal line absent; parascutal carina broad, reaching notaulus. Mesoscutellum slightly longer than broad, with subparallel sides, broadest part in posterior 1 / 3; mesoscutellum rugose-coriaceous, overhanging metanotum, with dense long setae. Mesoscutellar foveae ovate, broader than high, with smooth, glabrous bottom, delimited all around by strong black carina. Mesopleuron entirely smooth, with setae only along ventral edge and some sparse setae along mid-height; mesopleural triangle smooth, with dense white setae; dorsal and lateral axillar areas smooth, glabrous, without setae; axillula with delicate parallel longitudinal striae; subaxillular bar smooth, glabrous, with parallel sides, posteriorly as high as height of metanotal trough; metapleural sulcus reaching mesopleuron at half of its height, upper part of sulcus also distinct, sulcus separating smooth, glabrous area, with dense setae in lower part. Metascutellum rugose, higher than height of smooth, glabrous ventral impressed area; metanotal trough smooth, with dense setae; central propodeal area lyre-shaped, smooth, glabrous, with a few strong short irregular rugae; lateral propodeal carinae strong, broad and high, bent outwards in posterior 1 / 3; lateral propodeal area smooth, with long white setae. Nucha with net of numerous irregular rugae. Tarsal claws with acute basal lobe. Fore wing longer than body, hyaline, with short cilia on margin, veins brown, radial cell open, 4.4 × as long as broad; Rs reaches wing margin, R 1 nearly reaching wing margin; areolet absent. Rs + M indistinct, visible on 1 / 3 of distance between areolet and basalis, its projection reaching basalis at half of its height. Metasoma longer than head + mesosoma, higher than long in lateral view; 2 nd metasomal tergum extending to half-length of metasoma in dorsal view, with patch of dense white setae anterolaterally, with inconspicuous micropunctures extending to half-length of tergum; all subsequent terga until tergum 5 and hypopygium without micropunctures; tergum 6 and 7 with micropunctures, prominent part of ventral spine of hypopygium 6.8 × as long as broad in ventral view, with short white setae ventrally. Body length 1.5 – 2.1 mm (n = 10). The description of the sexual generation is given below for the first time. Sexual female (Figs 241 – 244, 250 – 255). Head, mesosoma, metasoma dark brown, antenna slightly lighter; mouthparts, legs light brown with darker coxae. Head alutaceous, with a few setae, denser on lower face, rounded, 1.2 × as broad as high and slightly broader than mesosoma in frontal view; 2.2 × as broad as long in dorsal view. Gena alutaceous, slightly broadened behind eye in frontal view, narrower than tranverse diameter of eye in lateral view. Malar space alutaceous, shining, glabrous, without sulcus and striae radiating from clypeus and reaching eye; eye 4.4 × as high as length of malar space. Eyes slightly converging ventrally. POL 2.4 × as long as OOL, OOL 1.5 × as long as diameter of lateral ocellus and 0.8 × as long as LOL, all ocelli slightly ovate, of same size. Transfacial distance as long as height of eye or slightly shorter; diameter of antennal torulus 1.4 × as long as distance between them, distance between torulus and eye slightly shorter than diameter of torulus; lower face smooth, with dense white setae, without striae; slightly elevated median area delicately coriaceous, with few setae. Clypeus rectangular, nearly 2.0 × as broad as high, smooth, with long setae; ventrally rounded, not emarginate and without median incision; anterior tentorial pit large, rounded, distinct, epistomal sulcus distinct, clypeo-pleurostomal line well impressed. Frons uniformly alutaceous, without striae and setae; interocellar area alutaceous. Vertex, occiput and postocciput alutaceous; postgena alutaceous, without setae, with longitudinal delicate parallel striae along gular sulci; posterior tentorial pit large, elongated, area below impressed; occipital foramen slightly shorter than height of postgenal bridge; hypostomal carina emarginate, continuing into postgenal sulci which diverge strongly toward occipital foramen, postgenal bridge anteriorly broader than occipital foramen. Antenna longer than head + mesosoma, with 11 flagellomeres, pedicel longer than broad; F 1 1.7 x as long as pedicel and 1.2 × as long as F 2; F 2 1.1 × as long as F 3; F 3 slightly longer than F 4, F 5 1.1 × as long as F 6, subsequent flagellomeres nearly equal in length, F 11 1.7 × as long as F 10; placodeal sensilla on F 5 – F 11, absent on F 1 – F 4. Mesosoma 1.2 × as long as high, with sparse white setae, except dense setae on lateral propodeal area. Pronotum smooth, with a few sparse setae, with some delicate striae laterally; propleuron alutaceous, glabrous. Mesoscutum smooth, with sparse white setae laterally and along notaulus, slightly longer than broad (greratest width measured across mesoscutum level with base of tegulae). Notaulus complete, deep, bottom smooth, posteriorly broader and strongly converging; at posterior end the distance between notauli shorter than distance between notaulus and side of mesoscutum; anterior parallel line invisible; parapsidal line distinct, marked with broad slightly impressed line; median mesoscutal line absent; parascutal carina broad, reaching notaulus. Mesoscutellum ovate, slightly longer than broad; disk of mesoscutellum smooth, glabrous, dull rugose laterally and posteriorly, overhanging metanotum, with sparse long setae. Mesoscutellar foveae in the form of a narrow semi-lunar depression, not separated medially, with smooth, glabrous bottom. Mesopleuron entirely smooth, with setae in posteroventral part; mesopleural triangle smooth, glabrous, with some irregular striae and a few setae; dorsal and lateral axillar areas smooth, glabrous, with dense white setae; subaxillular bar smooth, glabrous, with parallel sides, as high as height of metanotal trough; metapleural sulcus reaching mesopleuron at half of its height, upper part of sulcus distinct, sulcus separating smooth, glabrous area, with a few setae in lower part. Metascutellum delicately coriaceous, 3.0 × as high as height of smooth, glabrous ventral impressed area; metanotal trough smooth, with some setae; central propodeal area lyre-shaped, smooth, glabrous, with net of irregular interrupted rugae; lateral propodeal carinae distinct, bent outwards in posterior 1 / 3; lateral propodeal area smooth, with long dense white setae. Nucha with numerous sulci dorsally and laterally. Tarsal claws with very tiny basal lobe. Fore wing longer than body, hyaline, with distinct dense cilia on margin, veins light brown, radial cell open, 4.6 × as long as broad; R 1 and Rs reaching wing margin; areolet small, triangular, closed, indistinct. Rs + M narrow, inconspicuous, its projection reaching basalis slightly below its mid height. Metasoma as long as head + mesosoma, slightly longer than high in lateral view; 2 nd metasomal tergum extending to half-length of metasoma in dorsal view, with a few short white setae and without micropunctures laterally; subsequent terga smooth, glabrous, without micropunctures. Hypopygium without micropunctures, prominent part of ventral spine of hypopygium 2.0 × as long as broad in ventral view, with some short setae ventrally which do not extend beyond apex of spine. Body length 2.0 – 2.2 mm (n = 5). Male (Figs 245 – 249). Similar to female, body slightly darker; eye 4.8 × as high as length of malar space; POL 3.6 × as long as OOL, OOL 0.6 × as long as LOL, diameter of lateral ocellus 1.4 × as long as OOL, ocelli ovate, larger than in female; interocellar area elevated in frontal view; antenna longer than body, with 13 flagellomeres, F 1 straight, not broadened and curved, F 1 1.3 × as long as F 2, F 2 = F 3, all subsequent flagellomeres nearly equal in length, F 13 = F 12; placodeal sensilla on all flagellomeres. Body length 1.7 – 1.9 mm (n = 5). Galls. The sexual gall (Fig. 239) is small, 2 – 3 mm, conical gall on the leaf margin and / or catkin, slightly pubescent. Fresh galls are pinkish to pale brown, turn dark purple-black when mature, the leaf blade twists slightly at the gall. The gall is difficult to distinguish from similar sexual galls of F. comatum, F. crystallinum and F. dumosae. The asexual gall (Fig. 240) is red, monolocular, detachable, cone-shaped on both sides of the leaves, 5 mm high and 3 – 5 mm broad at the base. The cone rises from a flared, cup-shaped base, which is narrowly attached to the leaf. The apex of the gall is pointed, with a blunt tip. The gall is covered by fine pubescence; the larval chamber is large, occupying the most of the gall base. Occurs singly or in groups, up to dozens (Russo 2006, 2021).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF9FFFBCFF8AA568FD85FCC0.taxon	biology_ecology	Biology. Liodora dumosae was erroneously named as the sexual generation of A. kingi (Rosenthal 1968; Rosenthal & Koehler 1971, Burks 1979), but subsequent detailed examination of the type material showed that L. dumosae is a distinct species and Rosenthal’s material represented the previously unknown and undescribed sexual generation of A. kingi (Dailey & Menke 1980; our examinations); herein we formally describe sexual A. kingi for the first time. Alternate sexual and asexual generations are also confirmed herein on the basis of similarity in cytb sequence data. Four individuals (two asexual females, one sexual female, one sexual male) had cytb sequences that were on average 0.23 % divergent (range 0 – 0.47 %; GenBank accessions OK 041496, OQ 446201 – OQ 446203). Asexual galls have been collected from Q. douglasii, Q. dumosa, Q. garryana, and Q. lobata (section Quercus, subsection Dumosae) in late September and October; adults emerge early the following spring (Burks 1979). Mature sexual galls have been collected in late March and the beginning of April from Q. berberidifolia, Q. douglasii, and Q. lobata (section Quercus, subsection Dumosae); adults emerge soon after under laboratory conditions.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF9FFFBCFF8AA568FD85FCC0.taxon	distribution	Distribution. USA: California.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF97FFB8FF8AA110FD6EFCC0.taxon	description	Figs 256 – 268	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF97FFB8FF8AA110FD6EFCC0.taxon	materials_examined	Type material. Andricus parmula Bassett: Type No 10500, asexual female, deposited at the Entomology Type Collection at the Academy of Natural Sciences of Philadelphia, not examined by the authors. Additional material. 25 asexual females, all from California: 2 females “ USA, California, Hastings Reserve, Q. lobata, leg. Challis, 2004.10.23. ”; 10 females “ USA, California, Clearlake, Q. lobata, CA 8, galltype 159; leg. J. A. Nicholls, 2007.11.03. ”; 2 females “ USA, California, Copperopolis, Q. douglasii, CA 907, galltype 159; leg. J. A. Nicholls, 2007.11.06. ”; 11 females “ USA, California, Cosumnes River Preserve, Q. lobata, CA 990, galltype 159; leg. J. A. Nicholls, 2007.11.07. ”	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF97FFB8FF8AA110FD6EFCC0.taxon	diagnosis	Diagnosis. Asexual females belong to the group of Feron species in which the body is never black; the head is rounded or trapezoid to triangular in frontal view, ocelli are not elevated above the frons; inner margins of eyes are parallel or very slightly converging ventrally, the transfacial distance is equal to or longer than the height of eye; toruli are located above mid-height of eyes; the eye is less than 3.0 × as high as length of the malar space; lateral ocelli smaller, OOL at least 2.5 × as long as the diameter of ocellus, if shorter then the head and mesosoma are not yellowish or light brown; the pronotum laterally with longitudinal carinae; the mesoscutum alutaceous to coriaceous, rugose-reticulate, reticulate, without piliferous points and the mesopleuron with transverse reliculate-carinate band at mid-height; as in F. gigas (asex), F. tibiale (asex), F. stellulum (asex), and F. syndicorum (asex). Differs from F. tibiale and F. syndicorum in the gena which is not broadened behind the eye in frontal view, 2 nd metasomal tergum with a band of micropunctures posteriorly and all subsequent terga with micropunctures. Differs from F. gigas and F. stellulum in that the malar space is without striae, mesoscutellar foveae absent or slightly impressed and the prominent part of the ventral spine of the hypopygium 7.0 × as long as broad in ventral view; see more characters at couplet 37 in the key. Re-description. Asexual female (Figs 256 – 267). Head, antenna, mesosoma, legs, metasoma uniformly light brown. Veins pale. Head alutaceous-reticulate, with sparse setae on lower face, postgena, slighly higher than broad and as broad as mesosoma in frontal view; 2.0 × as broad as long in dorsal view. Gena alutaceous-reticulate, not broadened behind eye in frontal view; gena in lateral view 2.0 × narrower than transverse diameter of eye. Malar space delicately coriaceous, without striae, malar sulcus absent; eye 2.1 × as high as length of malar space. Inner margins of eyes slightly converging ventrally. POL 2.3 × as long as OOL, OOL 2.1 × as long as diameter of lateral ocellus and slightly shorter than LOL, all ocelli ovate, of same size. Antennal toruli located above mid-height of eyes. Transfacial distance 1.4 × as long as height of eye; toruli located above mid height of head, frons shorter than height of lower face, diameter of antennal torulus 1.5 × as long as distance between them, distance between torulus and eye 1.5 × as long as diameter of torulus; lower face delicately coriaceous, without setae; slightly elevated median area and area between toruli delicately coriaceous, with a few setae. Clypeus impressed, flat, rectangular, broader than high, smooth, with few long setae along ventral edge; ventrally rounded, not emarginate and without median incision; anterior tentorial pit rounded, distinct, small; epistomal sulcus distinct, clypeo-pleurostomal line well impressed. Frons, interocellar area, vertex and occiput uniformly alutaceous-reticulate, without striae and setae; postocciput and postgena glabrous, with very delicate, indistinct concentric lines around and laterad to occipital foramen and postgenal bridge; posterior tentorial pit large, elongated, area below impressed; occipital foramen shorter than height of postgenal bridge; hypostomal carina emarginate, continuing into postgenal sulci which diverge strongly toward occipital foramen, postgenal bridge anteriorly slightly broader than occipital foramen. Antenna slightly shorter than body, with 12 flagellomeres, pedicel subglobose, slightly longer than broad; flagellomeres subsequently broadening towards apical end; F 1 1.4 × as long as F 2 and 1.8 × as long as pedicel; F 2 = F 3 = F 4, F 5 = F 6, F 7 to F 11 equal in length; F 12 slightly longer than F 11; placodeal sensilla on F 4 – F 12. Mesosoma nearly as long as high, without setae. Pronotum delicately coriaceous, with delicate striae, glabrous laterally; propleuron smooth, with sparse short setae. Mesoscutum uniformly reticulate, slightly longer than broad (greatest width measured across mesoscutum level with base of tegulae). Notaulus complete, indistinct in anterior 1 / 4 of mesoscutum length, distinctly impressed along remainder of mesoscutum; posteriorly converging; at posterior end the distance between notauli shorter than distance between notaulus and side of mesoscutum; anterior parallel line indistinct, impressed narrow stripes extending to 1 / 3 of mesoscutum length; parapsidal line marked with indistinct, narrow smooth, impressed area; median mesoscutal line absent; parascutal carina broad, reaching notaulus. Mesoscutellum elongated, longer than broad, broadest part in posterior 1 / 4 of its length; disk of mesoscutellum rugose, dull rugose laterally and posteriorly, overhanging metanotum, with sparse setae. Mesoscutellar foveae absent, slightly impressed anterior part delicately coriaceous like rest of disk, without central carina. Mesopleuron indistinctly delicately coriaceous, with stronger coriaceous sculpture in central transverse band extending across mesopleuron at mid height; speculum and ventral half of mesopleuron smooth, glabrous, without transverse longitudinal striae; mesopleural triangle smooth, with a few white setae; dorsal and lateral axillar areas smooth, with a few white setae; axillula with delicate parallel longitudinal striae; subaxillular bar smooth, glabrous, with subparallel sides, posteriorly as high as height of metanotal trough; metapleural sulcus reaching mesopleuron at half of its height; upper part of sulcus indistinct; lower part of sulcus delimiting smooth area with dense long white setae. Metascutellum smooth, glabrous, shorter than height of smooth, glabrous ventral impressed area; metanotal trough smooth, glabrous, without setae; central propodeal area lyre-shaped, smooth, glabrous, without rugae; lateral propodeal carinae distinct, bent outwards in posterior 1 / 3 of its height; lateral propodeal area smooth, with long dense white setae. Nucha with numerous sulci laterally, smooth glabrous dorsally. Tarsal claws with basal lobe. Fore wing longer than body, hyaline, with long dense cilia on margin, veins light brown, radial cell open, 4.2 × as long as broad; Rs and R 1 nearly reaching wing margin; areolet indistinct, hardly traceable or not. Rs + M indistinct, its projection reaching basalis below half of its height. Metasoma longer than head + mesosoma, slightly longer than high in lateral view; 2 nd metasomal tergum extending to 2 / 3 length of metasoma in dorsal view, with numerous white setae anterolaterally, with band of micropunctures posteriorly; all subsequent terga with micropunctures. Hypopygium without micropunctures, prominent part of ventral spine of hypopygium 7.0 × as long as broad in ventral view, with few setae ventrally. Body length 1.5 – 1.7 mm (n = 10). Gall (Fig. 268). Minute, flat, sessile, saucer shaped, red spangle gall, on the underside of the leaves, 2.0 mm in diameter, with a slight elevation in the center, where the small larval cell is located (Russo 2006, 2021).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF97FFB8FF8AA110FD6EFCC0.taxon	biology_ecology	Biology. Only the asexual generation is known, which induces galls on Q. douglasii, Q. dumosa, Q. garryana, Q. lobata (section Quercus, subsection Dumosae), and Q. engelmannii (section Quercus, subsection Leucomexicana) (Burks 1979). Galls mature in April, adults emerge after soon (Russo 2006, 2021).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF97FFB8FF8AA110FD6EFCC0.taxon	distribution	Distribution. USA: California (Burks 1979).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF93FF81FF8AA110FD6EF8FD.taxon	description	Figs 269 – 299	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF93FF81FF8AA110FD6EF8FD.taxon	materials_examined	Types examined: Andricus pattersonae: SYNTYPES: No. 5822 is deposited at the California Academy of Sciences Collection, was not examined by the authors. A cotype asexual female “ L. S. Jr. U. Lot 508 Sub 52 ”, handwriting label “ Stanford Univ., Calif. ”, handwriting label “ Andricus pattersonae Full. ” “ Beut. Coll. rec’d 1935 ”, red label “ USNM cotype N 52974 ”, a Weld handwriting label “ Andricus pattersonae Full. ” was examined by GM. Andricus pedicellatus: HOLOTYPE: Sexual female “ Three Rivers Cal., Gall 3.23.20. ”, “ Q. Douglasii, Kinsey coll. ”, red label “ Neuroterus pedicellatus, Holo- COTYPE ”, deposited in, NYC, examined by GM. Four sexual female paratypes, two males and many galls in the general collection of AMNH were also examined by GM. Additional material. Andricus pattersonae, 12 asexual females: 3 females as “ USA, California, 30 km SW of Williams, ex Quercus douglasii, CA 16, coll. 2007.11.02. leg. J. A. Nicholls ” and 9 females as “ USA, California, Dye Creek Preserve, ex Quercus douglasii, CA 1177, coll. 2001.09.27 leg. J. A. Nicholls ”. Dros pedicellatum: 3 sexual females labelled as “ USA, California, Quail Ridge Reserve, ex Quercus douglasii, CA 1038, coll. 2008.04.04. leg. J. A. Nicholls ”.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF93FF81FF8AA110FD6EF8FD.taxon	diagnosis	Diagnosis. Asexual females belong to the group of Feron species in which the pronotum is without carinae, with dense setae and piliferous points; the mesoscutum is dark brown between notauli in anterior 1 / 3 of mesoscutum length; as in F. crystallinum (asex) and F. sulfureum (asex). Feron pattersonae differs from these species in the ovate head in frontal view; the pronotum is smooth, with dense setae and piliferous points; mesoscutellar foveae are fused; second metasomal tergum extending to 1 / 3 length of the metasoma in dorsal view. Sexual females belong to the group of Feron species with black body, scape to F 2 are dark brown (sometimes light brown but never yellowish), legs are reddish brown with at least the hind coxa darker; the frons is flat, not or only slightly bulging in frontal view; toruli are located in the upper half of the head, inner margins of eyes are never strongly converging ventrally; the mesoscutum is smooth or partially alutaceous anteriorly and glabrous, the notaulus complete; the mesopleuron is entirely smooth without transverse striae in its central part; the mesoscutellum is uniformly alutaceous with numerous setae on piliferous points and the prominent part of the ventral spine of the hypopygium with setae; as in F. apiarium (asex) and F. kingi (sex). Differs from F. apiarium in the eyes converging ventrally, the eye is at least 4.0 x as high as length of the malar space, antennomeres with short setae, OOL 1.5 × as long as diameter of the lateral ocellus, the notaulus sometimes weakly impressed anteriorly and the prominent part of the ventral spine of the hypopygium with few short setae ventrally. Most closely resembles F. kingi but differs in the number of flagellomeres (12 in F. pattersonae, 11 in F. kingi) and in other characters mentioned at couplet 17 in the key. Males are characterised by a black body, ocelli are only moderately or not elevated above the frons, the notaulus reaching the pronotum and the mesoscutellum is uniformly alutaceous with numerous setae on piliferous points; as in F. comatum and F. kingi. In F. pattersonae F 1 longer than scape + pedicel, straight, not broadened and curved; flagellomeres, scape and pedicel are uniformly coloured (F 1 is equal in length to scape + pedicel, slightly broadened and curved, flagellomeres lighter than scape and pedicel in F. comatum); the head is triangular in frontal view, inner margins of eyes converging ventrally, space between central elevated area of lower face to lateral margin of eye is smooth, OOL as long as diameter of the lateral ocellus (in F. kingi the head is ovate, inner margins of eyes are parallel, central elevated area of the lower face is sculptured, OOL shorter than the diameter of the lateral ocellus).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF93FF81FF8AA110FD6EF8FD.taxon	description	Re-description. Asexual female (Figs 269 – 280). Entire body, antenna, legs are uniformly reddish brown, with dark brown to black metascutellum and central propodeal area. In some specimens internotaular area in anterior half, posteroventral part of mesopleuron black; last flagellomeres darker than rest of antenna. Head with a few long setae, denser on lower face, alutaceous below toruli, transverse, 1.2 × as broad as high and slightly broader than mesosoma in frontal view; 1.8 × as broad as long from dorsal view. Gena alutaceous, broadened behind eye in frontal view, narrower than transverse diameter of eye in lateral view. Malar space alutaceous, glabrous, with numerous delicate parallel striae radiating from clypeus and reaching eye; malar sulcus absent; eye 2.3 × as high as length of malar space. Eyes converging slightly ventrally. POL 2.1 × as long as OOL, OOL 1.9 × as long as diameter of lateral ocellus and slightly shorter than LOL, all ocelli slightly ovate, of same size. Transfacial distance 1.25 × as long as height of eye; diameter of antennal torulus 1.7 × as long as distance between them, distance between torulus and eye as long as diameter of torulus; lower face smooth, with dense white setae, without striae; slightly elevated median area alutaceous with a few setae. Clypeus impressed, trapezoid, smooth, with long setae; ventrally rounded, not emarginate and without median incision; anterior tentorial pit large, rounded, distinct, epistomal sulcus distinct, clypeo-pleurostomal line well impressed. Frons uniformly reticulate, without striae and setae, interocellar area alutaceous. Vertex, occiput reticulate, without setae; postgena alutaceous with dense setae; postocciput alutaceous with delicate, longitudinal parallel striae and dense white setae; posterior tentorial pit large, elongated, area below impressed; occipital foramen higher than height of postgenal bridge; hypostomal carina emarginate, continuing into postgenal sulci which strongly diverge toward occipital foramen, postgenal bridge anteriorly broader than occipital foramen. Antenna longer than head + mesosoma, with 13 flagellomeres, pedicel 1.6 x as long as broad; F 1 2.6 × as long as pedicel and 1.3 × as long as F 2; F 2 = F 3, F 4 = F 5, F 5 1.3 x as long as F 6, all subsequent flagellomeres nearly equal in length; F 13 slightly longer than F 12; placodeal sensilla on F 5 – F 11, absent on F 1 – F 4. Mesosoma slightly longer than high, with dense white setae, except bare central propodeal area. Pronotum smooth without striae laterally, with dense setae and piliferous points; propleuron alutaceous, glabrous. Mesoscutum with dense white setae, slightly longer than broad (greatest width measured across mesoscutum level with base of tegulae), alutaceous alongside notaulus, in between notauli rugose-reticulate in anterior 1 / 3 and smooth shining in posterior 2 / 3. Notaulus deep, with smooth bottom, incomplete, indistinct in anterior 1 / 5 of mesoscutum length; anterior parallel lines in the form of a narrow elevated smooth, glabrous stripes, extending to 1 / 3 of mesoscutum length; parapsidal line distinct, marked with broad slightly impressed line; median mesoscutal line absent; parascutal carina broad, reaching notaulus. Mesoscutellum ovate, longer than broad; overhanging metanotum, with dense long setae; disk of mesoscutellum delicately coriaceous, laterally dull rugose. Mesoscutellar foveae in the form of a semi-lunar depression, with smooth, glabrous bottom, without median carina separating them. Mesopleuron entirely smooth, with dense setae anteroventrally and ventrally; mesopleural triangle smooth, with dense setae; dorsal and lateral axillar areas smooth, with dense white setae; subaxillular bar smooth, glabrous, triangular, gradually higher towards the most posterior end, posteriorly as high as height of metanotal trough; metapleural sulcus reaching mesopleuron at half of its height, upper part of sulcus indistinct, lower part of sulcus separating smooth, glabrous area, with a few setae in lower part. Metascutellum rugose, as high as height of smooth, glabrous ventral impressed area; metanotal trough smooth, with some setae; central propodeal area lyre-shaped, smooth, glabrous, with net of irregular interrupted rugae in posterior 1 / 3; lateral propodeal carinae strong, bent outwards in posterior 1 / 3; lateral propodeal area smooth, with long dense white setae. Nucha with strong sulci dorsally and laterally. Tarsal claws with basal lobe. Fore wing longer than body, hyaline, with distinct dense cilia on margin, veins brown, distinct, radial cell open, 4.8 × as long as broad; R 1 and Rs nearly reaching wing margin; areolet small, triangular, closed, indistinct. Rs + M narrow, distinct, extending to 2 / 3 of length from areolet to basalis; its projection reaching basalis slightly below its mid height. Metasoma as long as head + mesosoma, slightly longer than high in lateral view; 2 nd metasomal tergum extending to 1 / 3 length of metasoma in dorsal view, with numerous white setae anteroventrally and without micropunctures; subsequent terga smooth, glabrous, with micropunctures. Hypopygium with micropunctures, prominent part of ventral spine of hypopygium 4.7 × as long as broad in ventral view, with two rows of short setae ventrally which do not extend beyond apex of spine. Body length 2.0 – 2.2 mm (n = 5). Sexual female (Figs 284 – 287, 293 – 299). Head, antenna, mesosoma, metasoma dark brown to black, legs yellowish with darker mid and hind coxae. Fore wings hyaline, veins brown. Head alutaceous, with a few setae, denser on lower face, rounded, very slightly higher than broad and broader than mesosoma in frontal view; 1.9 × as broad as long from dorsal view. Gena alutaceous, not broadened behind eye in frontal view, narrower than transverse diameter of eye in lateral view. Malar space alutaceous, glabrous, without striae; eye 5.0 × as high as length of malar space. Eyes strongly converging ventrally. POL 2.4 × as long as OOL, OOL 1.7 × as long as diameter of lateral ocellus and slightly shorter than LOL, all ocelli slightly ovate, of same size. Transfacial distance shorter than height of eye; diameter of antennal torulus 1.7 × as long as distance between them, distance between torulus and eye slightly shorter than diameter of torulus; lower face and slightly elevated median area alutaceous, with dense white setae, without striae. Clypeus rounded, smooth, with a few setae; ventrally rounded, emarginate, without median incision; anterior tentorial pit large, rounded, distinct, epistomal sulcus distinct, clypeo-pleurostomal line well impressed. Frons uniformly delicately coriaceous to reticulate, without striae and setae, interocellar area alutaceous. Vertex, occiput and postocciput alutaceous; postgena smooth, with setae and piliferous points; posterior tentorial pit large, elongated, area below impressed; occipital foramen as high as height of postgenal bridge; hypostomal carina emarginate, continuing into postgenal sulci which diverge strongly toward occipital foramen, postgenal bridge anteriorly broader than occipital foramen. Antenna longer than head + mesosoma, with 12 flagellomeres, all flagellomeres with dense long setae, not broadened distally; pedicel slightly longer than broad; F 1 3.0 × as long as pedicel and 1.2 × as long as F 2; F 2 1.3 x as long as F 3; F 3 = F 4, F 5 = F 6, subsequent flagellomeres nearly equal in length; F 12 1.2 × as long as F 11; placodeal sensilla on F 3 – F 12. Mesosoma as long as high, with sparse white setae along notauli, laterally on pronotum, mesoscutum and mesoscutellum; denser setae on dorsal and lateral axillar areas and lateral propodeal area. Pronotum alutaceous to smooth, with sparse setae, with very delicate parallel striae in lateroposterior part; propleuron alutaceous, glabrous. Mesoscutum alutaceous, glabrous in anterior half, smooth and glabrous in posterior half, with sparse white setae, slightly longer than broad (greatest width measured across mesoscutum level with base of tegulae). Notaulus narrow, complete, only slightly impressed anteriorly, bottom smooth, slightly converging posteriorly; anterior parallel line invisible; parapsidal line distinct, marked with broad slightly impressed line; median mesoscutal line absent or sometimes in the form of a short triangle; parascutal carina broad, reaching notaulus. Mesoscutellum slightly longer than broad; disk of mesoscutellum smooth, glabrous, sparsely pubescent laterally, with rugae laterally and posteriorly, overhanging metanotum, with sparse long setae. Mesoscutellar foveae in the form of a narrow semi-lunar depression, with smooth, glabrous bottom. Mesopleuron entirely smooth, glabrous, with a few setae in anteroventral part; mesopleural triangle smooth, with some irregular striae and a few setae; dorsal and lateral axillar areas smooth, with dense white setae; subaxillular bar smooth, glabrous, triangulate, posteriorly as high as height of metanotal trough; metapleural sulcus reaching mesopleuron in the lower half of its height, upper part of sulcus indistinct, lower part of sulcus delimiting smooth, glabrous area, with setae and which is as broad as high. Metascutellum coriaceous, as high as height of smooth, glabrous ventral impressed area; metanotal trough smooth, with dense white setae; central propodeal area lyre-shaped, smooth, glabrous, with irregular interrupted rugae basally; lateral propodeal carinae strong, bent outwards in posterior 1 / 3; lateral propodeal area smooth, with long dense white setae. Nucha with few sulci dorsally and laterally. Tarsal claws with basal lobe. Fore wing longer than body, hyaline, with distinct dense cilia on margin, veins brown, radial cell open, 5.2 × as long as broad; R 1 and Rs reaching wing margin; areolet triangular, closed, distinct. Rs + M narrow, distinct, reaching basalis at its mid height. Metasoma as long as head + mesosoma, as long as high in lateral view; 2 nd metasomal tergum extending to more than half-length of metasoma in dorsal view, with white setae and without micropunctures laterally; subsequent terga smooth, glabrous, without micropunctures. Hypopygium without micropunctures, prominent part of ventral spine of hypopygium 2.0 × as long as broad in ventral view, with some short setae ventrally which do not extend beyond apex of spine. Body length 2.8 – 2.9 mm (n = 2). Male (Figs 288 – 292). Similar to female, legs slightly darker; head triangular in frontal view; eye 4.5 × as high as length of malar space; head posteriorly uniformly and entirely alutaceous; POL 2.7 × as long as OOL, OOL as long as diameter of lateral ocellus and slightly shorter than LOL, ocelli ovate, larger than in female; interocellar area elevated in frontal view; antenna longer than body, pedicel as long as broad, with 13 flagellomeres, F 1 straight, not swollen and curved, longer than scape + pedicel, F 1 1.3 × as long as F 2, F 2 = F 3 = F 4, all subsequent flagellomeres nearly equal in length, F 13 slightly shorter than F 12; placodeal sensilla on all flagellomeres. Body length 2.7 mm (n = 1). Gall. Asexual gall (Figs 281 – 282) Relatively large, thin, flat spangle gall on underside of leaves, detachable, monolocular. about 9 mm in diameter, with irregular way margin. Green when young, becoming yellow or tan when mature. Sexual gall (Fig. 283) is a small, elongate capsule, 5 – 7 mm long, 1.0 – 1.5 mm wide, attached by a slender pedicel to the edge of the leaf, unilocular. The gall is sharp-tipped, broadest near the tip, continuing into a slender, thread-like stem, 5 – 12 mm long, evidently a continuation of a leaf vein. The gall is thin-walled, entirely hollow.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF93FF81FF8AA110FD6EF8FD.taxon	biology_ecology	Biology. Andricus pattersonae and Liodora dumosae were erroneously paired by Evans (1972; restated by Dailey & Menke 1980). Evans (1972) appears to have mis-identified the asexual gall he found as A. pattersonae; his Figure 15 shows a gall much more similar to the new species F. rucklei described herein. Molecular data also refute Evans’ pairing, instead establishing the correct matching of A. pattersonae with A. pedicellatus, with the associated synonymisation herein. Four individuals (two asexual females [= A. pattersonae], two sexual females [= A. pedicellatus]) were sequenced for cytb and ITS 2. Cytb sequences were on average 1.14 % divergent (range 0.23 – 1.90 %; GenBank accessions OQ 446204 – OQ 446206) and ITS 2 sequences were on average 0.25 % divergent (range 0 – 0.42 %, including identical alleles in one asexual and one sexual individual; GenBank accessions OQ 448243 – OQ 448246). Asexual galls have been recorded from leaves on section Quercus, subsection Dumosae oaks: Q. douglasii, Q. dumosa, Q. garryana, and Q. lobata (Burks 1979), the gall matures by late autumn, adults emerge in late winter. Sexual galls occur on leaves of Q. douglasii (Burks 1979) and mature in April; adults emerge soon after.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF93FF81FF8AA110FD6EF8FD.taxon	distribution	Distribution. USA: California (Burks 1979).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFABFF8DFF8AA2E0FDA3FAD8.taxon	description	Figs 300 – 310 urn: lsid: zoobank. org: act: 2910 FEE 6 - 43 FD- 443 C- 97 DF- 9 A 3963 F 3043 D	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFABFF8DFF8AA2E0FDA3FAD8.taxon	materials_examined	Type material. HOLOTYPE: Asexual female “ USA, AZ, Cypress picnic area, Santa Catalina Mtns, AZ 226 - 232, spAZl 4, galltype 80; ex Q. rugosa, 2007.10.28, leg. J. A. Nicholls ”. PARATYPES (28 asexual female paratypes) labeled as the holotype. The female holotype and 10 female paratypes are deposited in the USNM, 18 female paratypes in the PHDNRL.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFABFF8DFF8AA2E0FDA3FAD8.taxon	etymology	Etymology. Named after Robert Melika, son of G. Melika.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFABFF8DFF8AA2E0FDA3FAD8.taxon	diagnosis	Diagnosis. Asexual females are members of the group of Feron species characterised by having a body which is never black; the head is rounded or trapezoid to triangular in frontal view, ocelli are not elevated above the frons; inner margins of eyes are parallel or very slightly converging ventrally, the transfacial distance is equal or longer than the height of eye; toruli are located above the mid-height of eyes; the eye is less than 3.0 × as high as length of the malar space; lateral ocelli are smaller, OOL at least 2.5 × as long as the diameter of the ocellus, if shorter, then the head and mesosoma are not yellowish or light brown; the pronotum laterally with longitudinal carinae; the mesoscutum alutaceous to coriaceous, rugose-reticulate, reticulate, without piliferous points and the mesopleuron is entirely smooth; as in F. caepula (asex), F. rucklei (asex), F. serranoae (asex), F. stellare (asex), F. tecturnarum (asex) and some F. tibiale (asex). Nevertheless, F. roberti differs from all these species in having a trapezoid head; the gena is not broadened behind the eye; the transfacial distance is equal to the height of the eye and the antenna has 11 flagellomeres (see more characters at couplet 39 in the key).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFABFF8DFF8AA2E0FDA3FAD8.taxon	description	Description. Asexual female (Figs 300 – 309). Head, antennae, mesosoma, metasoma light brown to brown; mouthparts and legs lighter. Frons, interocellar area, postgena dark brown to black; mesosoma chestnut brown, without black patches on mesoscutum; metasoma dorsally dark brown to black. Head trapezoid, broadest part above toruli, slightly higher than broad and slightly broader than mesosoma in frontal view, with sparse setae, denser on lower face; 2.2 × broader than long in dorsal view. Gena alutaceous, not broadened behind eye in frontal view, narrower than transverse diameter of eye in lateral view. Malar space with a few delicate striae radiating from clypeus and not reaching eye; eye 2.4 × as high as length of malar space. Inner margins of eyes parallel. POL 2.1 × as long as OOL, OOL slightly longer than diameter of lateral ocellus and subequal to LOL, all ocelli ovate, of same size. Transfacial distance nearly equal to height of eye; toruli located above mid height of head, frons shorter than height of lower face, diameter of antennal torulus 1.6 x as long as distance between them, distance between torulus and eye 1.1 × as long as diameter of torulus; lower face smooth, with dense white setae; slightly elevated median area alutaceous, with few setae. Clypeus trapezoid, broader than high, almost smooth, with a few long setae along ventral edge; ventrally rounded, not emarginate and without median incision; anterior tentorial pit rounded, distinct, epistomal sulcus distinct, clypeo-pleurostomal line well impressed. Frons uniformly alutaceous-reticulate, without striae and setae, areas between toruli and between torulus and eye also reticulate; interocellar area coriaceous. Vertex and occiput alutaceous, with white long setae; postocciput and postgena glabrous, alutaceous-reticulate, with concentric lines around occipital foramen and postgenal bridge; posterior tentorial pit large, elongated, area below impressed; occipital foramen as high as height of postgenal bridge; hypostomal carina emarginate, continuing into postgenal sulci which diverge strongly toward occipital foramen, postgenal bridge anteriorly slightly broader than occipital foramen. Antenna longer than head + mesosoma, with 11 flagellomeres, pedicel longer than broad; flagellomeres subsequently broadening towards apical end; F 1 = F 2 and 2.0 × as long as pedicel; F 2 1.2 × as long as F 3; F 3 = F 4, F 5 = F 6, F 7 to F 10 equal in length; F 11 slightly longer than F 10; placodeal sensilla on F 5 – F 11, absent on F 1 – F 4. Mesosoma longer than high, with a few white setae, setae denser along propleura and on lateral propodeal area. Pronotum smooth, with delicate parallel striae only in dorso-posterior quarter and with sparse setae laterally; propleuron smooth, glabrous, with delicate transverse parallel striae ventrally. Mesoscutum predominantly reticulate, smooth between notauli on anterior 1 / 3 and along parapsidal lines; white setae sparse in posterior half, much denser in anterior half of mesoscutum which is slightly longer than broad (greatest width measured across mesoscutum level with base of tegulae); piliferous points absent. Notaulus deep, complete, posteriorly converging; at posterior end the distance between notauli shorter than distance between notaulus and side of mesoscutum; anterior parallel line present, smooth; parapsidal line marked with broad smooth, impressed area; median mesoscutal line absent; parascutal carina broad, reaching notaulus. Mesoscutellum elongated, longer than broad, broadest part in posterior 1 / 4 of its length, circumscutellar carina present; disk of mesoscutellum reticulate, dull rugose laterally and posteriorly, overhanging metanotum, with sparse long setae. Mesoscutellar foveae in the form of a transverse semilunar impression, only slightly broader than high, with smooth, glabrous bottom, without central carina. Mesopleuron smooth, glabrous, with transverse longitudinal parallel delicate striae only on the most ventral part; mesopleural triangle smooth, with dense, long white setae, hiding the surface sculpture; dorsal and lateral axillar areas smooth, with dense white setae; axillula with delicate parallel longitudinal striae; subaxillular bar smooth, glabrous, with parallel sides, posteriorly as high as height of metanotal trough; metapleural sulcus reaching mesopleuron in lower 1 / 3 of its height; upper part of sulcus indistinct; lower part of sulcus delimiting smooth area with dense long white setae. Metascutellum smooth, glabrous, higher than height of smooth, glabrous ventral impressed area; metanotal trough smooth, with dense white setae; central propodeal area lyre-shaped, smooth, glabrous, without rugae; lateral propodeal carinae distinct, bent slightly outwards in posterior 1 / 3 of its height; lateral propodeal area smooth, with long dense white setae. Nucha with numerous sulci dorsally and laterally. Tarsal claws with basal lobe. Fore wing longer than body, hyaline, with distinct dense cilia on margin, veins light brown, radial cell open, 4.8 × as long as broad; Rs and R 1 nearly reaching wing margin; areolet triangular, small, closed and distinct. Rs + M distinct, its projection reaching basalis at half of its height. Metasoma as long as head + mesosoma, slightly longer than high in lateral view; 2 nd metasomal tergum extending to 3 / 4 length of metasoma in dorsal view, with numerous white setae anterolaterally, smooth, without micropunctures; all subsequent terga and hypopygium smooth, without micropunctures. Prominent part of ventral spine of hypopygium 6.7 × as long as broad in ventral view. Body length 1.8 – 2.3 mm (n = 10). Gall (Fig. 310). Pinkish leaf galls, turret-like with bristles all around, covered with more or less crystalline, fine, hair-like fibers, similar to F. sulfureum, F. tibiale and F. tubifaciens, however, in larger clusters (20 + galls) up to 20 mm wide and 25 – 30 mm long.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFABFF8DFF8AA2E0FDA3FAD8.taxon	biology_ecology	Biology. Only the asexual generation is known, which induces leaf galls on Q. rugosa (section Quercus, subsection Leucomexicana). Galls mature in the autumn dropping only with the leaf; adults emerge next year, in late March – April.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFABFF8DFF8AA2E0FDA3FAD8.taxon	distribution	Distribution. USA, Arizona.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFA6FF88FF8AA728FF5EFF00.taxon	description	Figs 311 – 323 urn: lsid: zoobank. org: act: 26 E 3 C 69 D-CE 69 - 47 D 1 - 89 B 7 - 134 EBE 136 AED	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFA6FF88FF8AA728FF5EFF00.taxon	materials_examined	Type material: HOLOTYPE. Asexual female “ Canada, British Columbia, Ruckle Provincial Park, leg. J. Nicholls, 2007.11.12. Code BC 352, spBCl 1; ex Quercus garryana ”. PARATYPES (9 asexual females) with the same labels as the holotype, however, with different collecting codes: BC 349 - 1, BC 350 - 2, BC 352 - 1, BC 354 - 1, BC 355 - 1, BC 356 - 3. The female holotype is deposited at the USNM, 9 female paratypes at the PHDNRL.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFA6FF88FF8AA728FF5EFF00.taxon	etymology	Etymology. The species is named after the site it was found, Ruckle Provincial Park.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFA6FF88FF8AA728FF5EFF00.taxon	diagnosis	Diagnosis. Asexual females belong to the group of Feron species in which the body is never black; the head is rounded in frontal view with a slightly elevated median area of lower face which is smooth and shining; the gena at least slightly broadened behind the eye; ocelli are not elevated above the frons; inner margins of eyes are parallel or very slightly converging ventrally; the transfacial distance is longer than height of the eye; the antenna with 12 flagellomeres, sometimes suture between F 11 and F 12 incomplete; toruli are located above the mid-height of eyes; the eye is less than 3.0 × as high as length of the malar space; lateral ocelli are smaller, OOL at least 2.5 × as long as the diameter of the ocellus, if shorter then the head and mesosoma are not yellowish or light brown; the pronotum laterally with longitudinal carinae; the mesoscutum is alutaceous to coriaceous, rugose-reticulate, reticulate, without piliferous points; mesoscutellar foveae divided by a central carina; the mesopleuron is entirely smooth; as in F. bakkeri (asex), F. caepula (asex), F. scutellum (asex), and F. stellare (asex). Nevertheless, this species differs from F. caepula in the brown body colour sometimes with darker marks, and parallel eyes, while F. caepula is yellowish to light brown and has eyes converging strongly ventrally. Differs from F. bakkeri in having mesoscutellar foveae conspicuous and smooth, while they are inconspicuous and faintly rugose in F. bakkeri. Differs from F. scutellum in the coarsely rugose mesoscutellar disk, while in F. scutellum it is faintly reticulated and with a median elevated area. The most similar species is F. stellare but differs from it in having dark flagellomeres, the notaulus is complete and the third and subsequent metasomal terga with sparse micropunctures (more characters at couplet 47 in the key).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFA6FF88FF8AA728FF5EFF00.taxon	description	Description. Asexual female (Figs 311 – 321). Head and antennae dark brown, maxillary and labial palpi light brown; mesosoma and metasoma reddish brown; legs light brown. Head with sparse white setae, denser on lower face and clypeus, 1.2 × as broad as high and slightly broader than mesosoma in frontal view, 1.9 x as broad as long from dorsal view. Gena alutaceous, very slightly broadened behind eye in frontal view, as broad as transverse diameter of eye in lateral view. Malar space alutaceous, glabrous, without striae; eye 2.4 × as high as length of malar space. Inner margins of eyes slightly converging ventrally. POL 2.3 × as long as OOL; OOL 1.8 × as long as diameter of lateral ocellus and slightly shorter than LOL; all ocelli slightly ovate, of same size. Transfacial distance slightly longer than height of eye; diameter of antennal torulus 1.6 × as long as distance between them, distance between torulus and eye 1.3 × as long as diameter of torulus; lower face smooth, with dense white setae, without striae; slightly elevated median area smooth, glabrous, without setae. Clypeus smooth, glabrous, quadrangular, only slightly broader than high; ventrally rounded, not emarginate, without median incision and with dense long setae; anterior tentorial pit large, rounded, epistomal sulcus and clypeo-pleurostomal line broad, well impressed. Frons and interocellar area delicately coriaceous to reticulate, without striae, with a few short setae. Vertex, occiput delicately coriaceous to reticulate, with sparse white setae; postgena and postocciput smooth, with dense long setae; posterior tentorial pit large, ovate, area below impressed; occipital foramen as high as height of postgenal bridge; hypostomal carina emarginate, continuing into postgenal sulci which bend outwards; postgenal bridge anteriorly as broad as width of occipital foramen. Antenna longer than head + mesosoma, with 12 flagellomeres, with dense long white setae; pedicel 1.65 × as long as broad, flagellomeres broadening towards apex; F 1 longer than scape + pedicel, F 1 2.0 × as long as pedicel and slightly longer than F 2; F 2 1.2 × as long as F 3; F 3 = F 4, subsequent flagellomeres shorter, nearly equal in length, F 12 slightly longer than F 11; placodeal sensilla on F 4 – F 12. Mesosoma slightly longer than high, with sparse short white setae. Pronotum smooth, glabrous, with delicate parallel rugae posterolaterally, with dense setae along anterior rim; propleuron smooth, glabrous. Mesoscutum alutaceous, with a few white setae along notaulus and denser setae anteriorly, between notauli; slightly longer than broad (greatest width measured across mesoscutum level with base of tegulae). Notaulus complete, deep, with smooth, glabrous bottom; posteriorly strongly converging, distance between notauli shorter than distance between notaulus and lateral side of mesoscutum; anterior parallel and parapsidal lines distinct, marked with smooth lines; median mesoscutal line absent; parascutal carina narrow, smooth, reaching notaulus. Mesoscutellum longer than broad, trapezoid, uniformly rugose, broader in posterior 1 / 3, posteriorly slightly rounded, overhanging metanotum. Mesoscutellar foveae separated by triangular elevated coriaceous central carina, nearly rounded to slightly ovate, with smooth, glabrous bottom. Mesopleuron and speculum uniformly smooth, with a few setae ventrally; mesopleural triangle alutaceous, glabrous, with a few setae; dorsal and lateral axillar areas smooth, with a few white short setae; subaxillular bar smooth, glabrous, with subparallel sides, posteriorly shorter than height of metanotal trough; metapleural sulcus reaching mesopleuron at mid height, upper part of sulcus indistinct. Metascutellum coriaceous, as high as height of smooth, glabrous ventral impressed area; metanotal trough smooth, with dense setae; central propodeal area smooth, glabrous, broad, lyre-shaped, without rugae; lateral propodeal carina bent strongly outwards at mid height; lateral propodeal area smooth, with long dense white setae. Nucha smooth, glabrous with numerous sulci dorsally and laterally. Tarsal claws toothed, with basal lobe. Fore wing 1.5 × as long as body, hyaline, margin with long dense cilia, veins pale yellow, radial cell open, 3.9 × as long as broad; R 1 and Rs nearly reaching wing margin; areolet triangular, indistinct, Rs + M inconspicuous, traceable along 1 / 3 of its length, its projection reaching basalis in lower half of its height. Metasoma as long as head + mesosoma, higher than long in lateral view; 2 nd metasomal tergum extending nearly to 2 / 3 of metasoma length in dorsal view, with numerous white setae anterolaterally, without micropunctures; subsequent terga with micropunctures, glabrous. Hypopygium with micropunctures, prominent part of ventral spine of hypopygium 5.6 × as long as broad in ventral view, with short setae ventrally which do not extend beyond apex of spine. Body length 2.0 – 2.3 mm (n = 8). Gall. (Figs 322 – 323). Small spangle leaf gall, 5 mm across, somewhat star-shaped, flat against the leaf surface but with a central bump. Pale yellow with a darker centre when growing, becoming tan when mature. Typically multiple galls scattered across a single leaf. The same gall is depicted and described as an unknown species in Russo (2006, 2021; informally called the disk gall wasp) and Weld (1957, Fig. 174).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFA6FF88FF8AA728FF5EFF00.taxon	biology_ecology	Biology. Only the asexual generation is known, which induces spangle leaf galls on Q. garryana (section Quercus, subsection Dumosae). Galls mature in November; adults emerge soon after under laboratory conditions. This gall appears to be depicted in Evans (1972) in his Figure 15; those galls were also collected from Q. garryana in the same area (southern Vancouver Island). Evans experimentally matched these asexual galls with the sexual generation of Liodora dumosae, but mistakenly called them A. pattersonae (which has been matched to a different sexual form, A. pedicellatus, using DNA evidence elsewhere in this study). Hence we hypothesise that F. rucklei may be the alternate asexual form of F. dumosae, but further DNA evidence is required to test this suggestion.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFA6FF88FF8AA728FF5EFF00.taxon	distribution	Distribution. Canada, British Columbia, Ruckle Provincial Park. It is the first record of this genus for Canada.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFA3FF95FF8AA350FDC1FDE8.taxon	description	Figs 324 – 328	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFA3FF95FF8AA350FDC1FDE8.taxon	materials_examined	Type material. HOLOTYPE. Asexual female “ Camp Creek, Arizona ”, “ N. M. Capron Coll. ”, “ Andricus scutella Weld ”, “ cut out December ”, red label “ Type No. 42885 USNM ”. PARATYPES (9 asexual females) labelled as the holotype, deposited in the collection of USNM. The female holotype and six paratypes are in the collection of the USNM, examined by VC-P. The type was examined based on photos taken by M. Buffington, USNM. Specimen data and images available at http: // n 2 t. net / ark: / 65665 / 34 db 243 c 6 - 9449 - 4191 - b 59 f- 2 cd 26 d 2 e 18 ab.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFA3FF95FF8AA350FDC1FDE8.taxon	diagnosis	Diagnosis. Asexual females belong to the group of Feron species in which the body is reddish brown; the head is rounded in frontal view, ocelli are not elevated above the frons; inner margins of eyes slightly converging ventrally, the transfacial distance is longer than the height of eye; toruli are located above mid-height of eyes; the eye is less than 2.6 × as high as length of the malar space; as in F. bakkeri (asex), F. rucklei (asex), and F. stellare (asex). Differs from F. bakkeri in having the mesoscutellar foveae distinct, but not defined posteriorly, with smooth bottom, and central part of mesoscutellar disk elevated and faintly reticulate, while the foveae are inconspicuous and faintly rugose and the mesoscutellar disk completely rugose in F. bakkeri. It differs from F. stellare and F. rucklei in having the disk of mesoscutellum faintly reticulated with the central part elevated, while it is coarsely rugose and not elevated in F. stellare and F. rucklei. The gall resembles those of Phylloteras cupella (Weld, 1926), but lacks the in-rolled top margin and has a removable whitish bloom. Re-description. Asexual female (Figs 324 – 327). Head, antenna, mesosoma, legs, metasoma uniformly reddish brown; base of metasoma and mesoscutellum lighter. Head alutaceous-reticulate, with dense setae on lower face, slightly higher than broad and as broad as mesosoma in frontal view; 2.0 × as broad as long in dorsal view. Gena alutaceous-reticulate, not broadened behind eye in frontal view; gena in lateral view 2.0 × narrower than transverse diameter of eye. Malar space delicately coriaceous, without striae, malar sulcus absent; eye 2.1 × as high as length of malar space. Inner margins of eyes converging ventrally. POL 1.9 × as long as OOL, OOL 2.1 × as long as diameter of lateral ocellus and slightly shorter than LOL, all ocelli ovate, of same size. Antennal toruli located at mid-height of eyes. Transfacial distance 1.4 × as long as height of eye; frons shorter than height of lower face, diameter of antennal torulus 3.0 × as long as distance between them, distance between torulus and eye 1.5 × as long as diameter of torulus; lower face smooth, with scattered setae; slightly elevated median area and area between toruli smooth with piliferous points, with a few setae. Clypeus impressed, flat, rectangular, broader than high, smooth, with a few long setae along ventral edge; ventrally rounded, not emarginate and without median incision; anterior tentorial pit rounded, distinct, small; epistomal sulcus distinct, clypeo-pleurostomal line well impressed. Frons, interocellar area, vertex and occiput uniformly alutaceous-reticulate, without striae and setae. Antenna slightly shorter than body, with 11 flagellomeres, pedicel slightly longer than broad; F 1 1.2 × as long as F 2 and above 2.0 × as long as pedicel; F 2 longer than F 3, F 4 slightly longer than F 5, all subsequent flagellomeres nearly equal in length; placodeal sensilla on F 3 – F 11. Mesosoma nearly as long as high, without setae. Pronotum glabrous, with delicate short parallel striae along posterior edge, with piliferous points. Mesoscutum uniformly reticulate, slightly longer than broad (greatest width measured across mesoscutum level with base of tegulae). Notaulus complete, distinctly impressed along entire length; posteriorly converging; at posterior end the distance between notauli shorter than distance between notaulus and side of mesoscutum; anterior parallel line indistinct; parapsidal line marked with indistinct, narrow smooth, impressed area; median mesoscutal line absent; parascutal carina broad, reaching notaulus. Mesoscutellum slightly longer than broad, with subparallel sides; disk of mesoscutellum faintly rugose on lateral and posterior margins, central part of disk faintly reticulate, and elevated after central carina of mesusctellar foveae, overhanging metanotum, with sparse setae. Mesoscutellar foveae not defined posteriorly, smooth, glabrous, with central carina. Mesopleuron smooth, alutaceous only on most anterior part; speculum smooth, glabrous, with transverse striae on most anterior part; mesopleural triangle smooth, with a few white setae; dorsal and lateral axillar areas smooth, with white setae; axillula with delicate parallel longitudinal striae; subaxillular bar smooth, glabrous, with subparallel sides, posteriorly as high as height of metanotal trough; metapleural sulcus reaching mesopleuron at half of its height; upper part of sulcus indistinct; lower part of sulcus delimiting smooth area with dense long white setae. Metascutellum dull alutaceous, glabrous, 1.5 × longer than height of smooth, glabrous ventral impressed area; metanotal trough smooth, glabrous, without setae; central propodeal area lyre-shaped, smooth, glabrous, without rugae; lateral propodeal carinae distinct, bent outwards in posterior 1 / 3 of its height; lateral propodeal area smooth, with long dense white setae. Nucha with irregular sulci laterally. Tarsal claws with basal lobe. Fore wing longer than body, hyaline, with cilia on margin, veins yellowish brown, radial cell open, 5.0 × as long as broad; Rs and R 1 nearly reaching wing margin; areolet distinct. Rs + M colourless, indistinctly reaching basalis, basalis slightly elongated on contact point. Metasoma as long as head + mesosoma, as long as high in lateral view; 2 nd metasomal tergum extending to 2 / 3 length of metasoma in dorsal view, with numerous white setae anterolaterally, with band of rare micropunctures posteriorly; all subsequent terga with rare micropunctures. Hypopygium without micropunctures, prominent part of ventral spine of hypopygium 5.8 × as long as broad in ventral view, with numerous long white setae ventrally. Body length 1.6 – 2.15 mm (n = 4). Gall (Fig. 328). A cup-shaped leaf spangle gall, up to 4.5 mm in diameter and 3.5 mm high, purple-brown with a whitish bloom, attached to under side of leaf. The edge of the cup is thin, not in-rolled. The larval cell is 2 mm long by 0.7 mm in diameter and lies transversely at the very base of the cup. The exit hole is into the bottom of cup.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFA3FF95FF8AA350FDC1FDE8.taxon	biology_ecology	Biology. The asexual generation is only known, which induces galls on Q. gambelii (section Quercus, subsection Dumosae) and Q. turbinella (section Quercus, subsection Leucomexicana). Galls mature in late autumn, and adults were cut out from galls in December-January (Weld 1930).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFA3FF95FF8AA350FDC1FDE8.taxon	distribution	Distribution. USA: AZ (Weld 1930).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFBEFF96FF8AA0F8FB98F9BF.taxon	description	Figs 329 – 341 urn: lsid: zoobank. org: act: ED 36 C 50 E-D 377 - 4148 - B 4 A 8 - 87497 FB 7 C 48 C	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFBEFF96FF8AA0F8FB98F9BF.taxon	materials_examined	Type material. HOLOTYPE: Asexual female “ Mexico (Code 171), Sierra de Guadalupe (MEX), ex Quercus sp., (10. i. 2013) 15. i – 15. ii. 2013, leg. M. Serrano & A. Villegas (Miriam- 323) ” (UB). PARATYPES (9 asexual females): labelled as the holotype (3 females at PHDNRL, 6 females at UB).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFBEFF96FF8AA0F8FB98F9BF.taxon	etymology	Etymology. Species dedicated to Miriam Serrano Muñoz, the student who collected the galls.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFBEFF96FF8AA0F8FB98F9BF.taxon	diagnosis	Diagnosis. Asexual females are part of the Feron group characterised by never having a black body; head transversely ovate in frontal view; the gena at least slightly broadened behind the eye; antennae with 12 flagellomeres; lateral sides of pronotum longitudinally striated at least on posterior half, rest of pronotum alutaceous, matte; mesoscutum coarsely reticulated; mesopleuron finely striated to alutaceous on anterior margin; as in F. tecturnarum (asex), F. tetyanae (asex) and part of F. tibiale (asex). Feron serranoae differs from these asexual forms in its long mesoscutellum, 1.3 × as long as broad and margined by a strong circumscutellar carina, while in the other species the mesoscutellum is only slightly longer than broad and the circumscutellar carina is absent.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFBEFF96FF8AA0F8FB98F9BF.taxon	description	Description. Asexual female (Figs 329 – 340). Head, and mesosoma reddish brown; metasoma reddish brown to dark brown, antennae slightly darker distally. Head trapezoid in frontal view, broadest part level with halfway up eye, with sparse setae, denser on lower face; 2.1 × as broad as long in dorsal view. Gena alutaceous, not or only very slightly broadened behind eye in frontal view in small specimens, narrower than transverse diameter of eye in lateral view. Malar space with a few delicate striae radiating from clypeus and reaching eye; eye 2.3 × as high as length of malar space. Inner margins of eyes parallel. POL 1.3 × as long as OOL, OOL 2.5 × as long as diameter of lateral ocellus and 1.6 × as long as LOL, all ocelli ovate, of same size. Transfacial distance 1.2 × as long as height of eye; toruli located slightly above mid height of head, frons shorter than height of lower face, diameter of antennal torulus 1.5 × as long as distance between them, distance between torulus and eye 1.3 × as long as diameter of torulus; lower face smooth, with dense white setae; slightly elevated median area alutaceous, with few setae. Clypeus trapezoid, broader than high, alutaceous, with a few long setae along ventral edge; ventrally rounded, not emarginate and without median incision; anterior tentorial pit rounded, distinct, epistomal sulcus distinct, clypeo-pleurostomal line well impressed. Frons uniformly reticulate, without striae and with few setae, areas between toruli and between torulus and eye also alutaceous; interocellar area reticulate. Vertex, occiput, postgena alutaceous, with white long setae; postocciput alutaceous-reticulate, with concentric lines around occipital foramen and postgenal bridge; posterior tentorial pit large, elongated, area below impressed; occipital foramen as high as height of postgenal bridge; hypostomal carina emarginate, continuing into postgenal sulci which diverge strongly toward occipital foramen, postgenal bridge anteriorly slightly broader than occipital foramen. Antenna longer than head + mesosoma, with 11 flagellomeres (some specimens with 12 flagellomeres with a distinct suture between F 12 and F 11), F 6 until F 11 – F 12 gradually broadening towards apical end, pedicel slightly longer than broad; F 1 1.5 × as long as pedicel and 1.2 × as long as F 2; F 2 = F 3 = F 4, F 5 to F 10 nearly equal in length, F 11 longer than F 10; placodeal sensilla on F 5 – F 11. Mesosoma slightly longer than high, with sparse white setae, except for dense setae on lateral propodeal area. Pronotum striate, propleuron alutaceous, glabrous. Mesoscutum reticulate, smooth along parapsidal lines with sparse white setae, slightly broader than long (greatest width measured across mesoscutum level with base of tegulae). Notaulus complete, deep, bottom smooth, posteriorly broader and slightly converging; at posterior end the distance between notauli shorter than distance between notaulus and side of mesoscutum; anterior parallel line distinct, in the form of a bare, smooth stripe, extending to half-length of mesoscutum; parapsidal line distinct, marked with broad impressed smooth glabrous stripes; median mesoscutal line absent; parascutal carina broad, reaching notaulus. Mesoscutellum ovate, slightly longer than broad, circumscutellar carina present; disk of mesoscutellum alutaceous with fine rugae, overhanging metanotum, with sparse setae. Mesoscutellar foveae shallow, fused, with smooth, glabrous bottom, occupying at least 1 / 3 of mesoscutellum length. Mesopleuron smooth, with setae in antero- and posteroventral part, and fine striae along anterior margin; mesopleural triangle smooth, with numerous short white setae; dorsal and lateral axillar areas smooth, with dense white setae; subaxillular bar smooth, glabrous, triangular, as high as height of metanotal trough; metapleural sulcus reaching mesopleuron at half of its height, upper part of sulcus distinct, lower part of sulcus separating smooth, glabrous area, with dense setae. Metascutellum alutaceous to smooth, glabrous, 3.0 x as high as height of smooth, glabrous ventral impressed area; metanotal trough smooth, with some setae; central propodeal area lyre-shaped, smooth, glabrous, with irregular interrupted rugae at the base in large specimens; lateral propodeal carinae strong, bent outwards in posterior 1 / 3; lateral propodeal area smooth, with long dense white setae. Nucha with numerous sulci dorsally and laterally. Tarsal claws with basal lobe. Fore wing longer than body, hyaline, with distinct dense cilia on margin, veins dark brown, radial cell open, 4.2 × as long as broad; R 1 and Rs not reaching wing margin; areolet small, triangular, closed and distinct. Rs + M distinct, its projection reaching basalis slightly above mid height. Metasoma as long as head + mesosoma, higher than long than in lateral view; 2 nd metasomal tergum extending to 2 / 3 of metasoma length in dorsal view, with short white setae anterolaterally, without micropunctures; subsequent terga and hypopygium smooth, glabrous, without micropunctures. Prominent part of ventral spine of hypopygium 6.5 × as long as broad in ventral view, with some short setae ventrally which do not extend beyond apex of spine. Body length 1.7 – 2.2 mm (n = 5). Gall (Fig. 341). Brownish rounded unilocular galls on the underside of leaves, with an apical hole. Up to 6 - 8 mm in diameter.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFBEFF96FF8AA0F8FB98F9BF.taxon	biology_ecology	Biology. Only the asexual generation is known, which induces galls on an unidentified white oak Quercus sp. (section Quercus, subsection Leucomexicana). The gall was found mature in January and the adults emerged soon after.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFBEFF96FF8AA0F8FB98F9BF.taxon	distribution	Distribution. Only known from Sierra de Guadalupe, Mexico State (Mexico).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFBDFF92FF8AA4D8FBA0FB8C.taxon	description	Figs 342 – 353	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFBDFF92FF8AA4D8FBA0FB8C.taxon	materials_examined	Additional material. Six asexual females and galls “ Hillsboro, N. M., gall 12.26.19 ”, “ Q. grisea Kinsey coll. ”; 4 females and galls “ Canatlan, 7 N, Dgo 7400 ’ Mex., galls 11.9.31., females 4.30.32. ”, “ Q. undata Kinsey coll. ”; two females “ Sta. Izabel 6 E, Chi. 6000 ’, Mex., galls 10.24.31, 547 females 4.21.32., Q. undata Kinsey coll. ”.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFBDFF92FF8AA4D8FBA0FB8C.taxon	diagnosis	Diagnosis. Asexual females belong to the group of Feron species without a black body; the head is quadrangular or ovate in frontal view, with ocelli elevated above the frons; inner margins of eyes are parallel or very slightly converging ventrally, the transfacial distance is equal to or longer than the height of the eye; toruli are located above mid-height of eyes; the eye less than 3.0 × as high as the length of malar space; lateral ocelli are large, OOL subequal or at most 1.7 × as long as the diameter of ocellus; the pronotum laterally with longitudinal carinae; the mesoscutum alutaceous to coriaceous, rugose-reticulate, reticulate, without piliferous points; as in F. vitreum (asex) and F. verutum (asex). Differs from F. vitreum in having the F 1 subequal to or slightly longer than scape + pedicel and the transfacial distance longer than the height of eye. Differs from F. verutum in having a mesoscutum with some delicate transverse striae on its anterior part between notauli, anterior parallel lines indistinct and the mesoscutellar foveae separated by a broad carina. See other characters at couplet 33 in the key. Re-description. Asexual female (Figs 342 – 352). Head, antenna, mesosoma, legs rusty brown; metasoma slightly darker. Head transverse, 1.2 × as broad as high in frontal view, with sparse setae, denser on lower face; 1.9 × as broad as long in dorsal view; head as broad as mesosoma in frontal view. Gena reticulated, only very slightly broadened behind eye in frontal view, slightly narrower than transverse diameter of eye in lateral view. Malar space alutaceous, shining, with delicate striae radiating from clypeus and nearly reaching eye, malar sulcus absent; eye 2.1 × as high as length of malar space. Inner margins of eyes parallel. POL 2.0 × as long as OOL, OOL 1.5 × as long as diameter of lateral ocellus and 1.2 × as long as LOL, all ocelli ovate, central ocellus slightly bigger than lateral ocellus. Transfacial distance 1.2 × as long as height of eye; torulus located slightly above mid height of eye, frons shorter than height of lower face, diameter of antennal torulus 1.6 × as long as distance between them, distance between torulus and eye 1.1 × as long as diameter of torulus; lower face delicately coriaceous, with sparse white setae; slightly elevated median area delicately coriaceous, with a few setae. Clypeus trapezoid, as broad as high, alutaceous, with a few long setae along ventral edge; ventrally rounded, emarginate and with delicate median incision; anterior tentorial pit rounded, large, distinct, epistomal sulcus distinct, clypeo-pleurostomal line well impressed. Frons delicately coriaceous to reticulate, without striae and with a few setae, small triangular area under central ocellus reticulated; areas between toruli and between torulus and eye reticulate; interocellar area delicately coriaceous to reticulate. Vertex, occiput, postgena delicately coriaceous to reticulate, with white long setae; postocciput smooth, glabrous; posterior tentorial pit large, elongate, area below impressed, glabrous; occipital foramen 2.0 × as high as height of postgenal bridge; hypostomal carina emarginate, continuing into postgenal sulcus; postgenal sulcus indistinct, bent outwards reaching posterior tentorial pit, and postgenal bridge unusually broad. Head posteriorly with black narrow stripes. Antenna slightly longer than head + mesosoma, with 12 flagellomeres, distal half slightly darker; pedicel slightly longer than broad; F 1 2.2 × as long as pedicel and slightly longer than F 2; F 2 slightly longer than F 3, F 3 = F 4, F 4 slightly longer than F 5, F 5 = F 6, F 7 and subsequent flagellomeres until F 10 nearly equal in length, F 11 slightly shorter than F 12; placodeal sensilla on F 4 – F 12. Mesosoma 1.2 × as long as high, with sparse white setae. Pronotum smooth, with sparse setae, with delicate parallel concentric striae laterally; propleuron delicately coriaceous, without setae (propleuron absent in the figures). Mesoscutum alutaceous to reticulate alongside notauli, smooth, glabrous in posterior half between notauli and with some delicate transverse striae in anterior part between notauli; with sparse white setae; slightly longer than broad (greatest width measured across mesoscutum level with base of tegulae). Notaulus complete, distinctly impressed along entire length, with smooth bottom, slightly converging posteriorly; anterior parallel line indistinct, invisible; parapsidal line distinct, marked with narrow impressed smooth glabrous stripes; median mesoscutal line absent; parascutal carina narrow, extending to level of tegula. Mesoscutellum trapezoid, slightly longer than broad; disk of mesoscutellum uniformly dull rugose, slightly overhanging metanotum, with a few setae. Mesoscutellar foveae ovate, slightly broader than high, with smooth, glabrous bottom, divided by triangular coriaceous central elevated area. Mesopleuron and speculum entirely smooth, with setae in posteroventral quarter; mesopleural triangle smooth, with numerous short white setae; dorsal and lateral axillar areas smooth, with dense white setae; subaxillular bar smooth, glabrous, with parallel sides, slightly elevated, triangular in most posterior part and as high as height of metanotal trough; metapleural sulcus reaching mesopleuron at half of its height, upper part of sulcus distinct, lower part of sulcus separating smooth, glabrous area, with dense setae. Metascutellum smooth, glabrous, higher than height of smooth, glabrous ventral impressed area; metanotal trough smooth, with dense setae; central propodeal area lyre-shaped, smooth, glabrous, without rugae; lateral propodeal carinae distinct, bent outwards in posterior 1 / 3; lateral propodeal area smooth, with long dense white setae and piliferous points. Nucha with net of irregular rugae dorsally and laterally. Tarsal claws toothed, with basal lobe. Fore wing longer than body, hyaline, with short dense cilia on margin, veins distinct, brown, radial cell open, 4.0 × as long as broad; R 1 and Rs not reaching wing margin; areolet and Rs + M indistinct, its projection reaching basalis at its half height. Metasoma slightly longer than head + mesosoma, higher than long in lateral view; 2 nd metasomal tergum extending to 2 / 3 of metasoma length in dorsal view, with dense short white setae anterolaterally, without micropunctures; subsequent terga and hypopygium smooth, shining, without micropunctures; prominent part of ventral spine of hypopygium 5.8 × as long as broad in ventral view, with a few short setae ventrally. Body length 1.3 – 2.4 mm (n = 10). Gall (Fig. 353). Single or scattered on the underside of leaf. Cylindrical with ends and middle slightly swollen, 2.0 mm in diameter and 3 – 5 mm high, with a crystalline appearance, covered with short stout blunt spines from which run faint decurrent ridges. Sessile, often lop-sided, spines more numerous on basal third. The gall is rosy red with a straw yellow band around the middle and some yellow at either end. The basal third is solid, with a thin-walled larval cell in the middle of the gall while the distal third or more is tubular with a slightly flared open end. The exit hole is in the hollow portion (Weld 1919).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFBDFF92FF8AA4D8FBA0FB8C.taxon	biology_ecology	Biology. Only the asexual generation is known, which induces leaf galls on Q. grisea, Q. turbinella, and Q. x undata (section Quercus, subsection Leucomexicana). Galls mature in late autumn; the larvae transform to adults in autumn but remain in the gall all winter and emerge the following spring in April – May.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFBDFF92FF8AA4D8FBA0FB8C.taxon	distribution	Distribution. USA: AZ, NM (Burks 1979); Mexico: Chihuahua, Durango.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFB9FF9FFF8AA6DCFD6EF808.taxon	description	Figs 354 – 366	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFB9FF9FFF8AA6DCFD6EF808.taxon	materials_examined	Type examined. HOLOTYPE: Asexual female “ Sequoia Nat. Park, Cal. ”, “ Q. garryana ”, “ 1783 ”, red label “ Type No. 27215 USNM ”, “ Andricus stellaris Weld ” deposited in USNM, examined by GM. Specimen data and images available at http: // n 2 t. net / ark: / 65665 / 303039 ff 4 - e 0 fe- 4064 - be 9 c-dbe 097 c 266 ba. Additional material. Asexual females. One female, designated as voucher specimen, compared with types at the USNM, by GM, labeled as “ USA, California, Round Valley, CA 1174, galltype 119; Q. garryana, leg. J. A. Nicholls, 2006.02.09 ”; one female “ USA, California, Dye Creek Preserve, CA 1169, galltype 135; Q. douglasii, leg. J. A. Nicholls ”.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFB9FF9FFF8AA6DCFD6EF808.taxon	diagnosis	Diagnosis. Asexual females belong to the group of Feron species in which the body is not black; the head is rounded in frontal view with a smooth and shining slightly elevated median area of lower face; the gena at least slightly broadened behind the eye; ocelli are not elevated above the frons; inner margins of eyes are parallel or very slightly converging ventrally; the transfacial distance is longer than height of the eye; the antenna with 12 flagellomeres, sometimes suture between F 11 and F 12 incomplete; toruli are located above the mid-height of eyes; the eye is less than 3.0 × as high as length of the malar space; lateral ocelli are smaller, OOL at least 2.5 × as long as the diameter of the ocellus, if shorter then the head and mesosoma are not yellowish or light brown; the pronotum laterally with longitudinal carinae; the mesoscutum is alutaceous to coriaceous, rugose-reticulate, reticulate, without piliferous points; mesoscutellar foveae divided by a central carina; the mesopleuron is entirely smooth; as in F. bakkeri (asex), F. caepula (asex), F. rucklei (asex), and F. scutellum (asex). Nevertheless, this species differs from F. caepula in the brown body colour, sometimes with darker marks and parallel eyes, while F. caepula is yellowish to light brown with eyes strongly convergent ventrally. Differs from F. bakkeri in having mesoscutellar foveae conspicuous and smooth, while inconspicuous and faintly rugose in F. bakkeri. Differs from F. scutellum in the coarsely rugose mesoscutellar disk, while it is faintly reticulated and with a median elevated area in F. scutellum. The most similar species is F. rucklei but differs in the antennae having the first flagellomeres lighter than subsequent ones, the notaulus is incomplete, mesoscutellar foveae delimited posteriorly by a strong black carina, and metasoma without micropunctures. Re-description. Asexual female (Figs 354 – 365). Head, antennae, mouthparts, mesosoma, metasoma dark brown, with darker mesoscutellum and propodeum; legs slightly lighter than body. Head rounded with white setae on lower face, occiput, postocciput and postgena, slightly broader than high and as broad as mesosoma in frontal view; 1.7 × as broad as long in dorsal view. Gena alutaceous, slightly broadened behind eye in frontal view, slightly narrower than transverse diameter of eye in lateral view. Malar space with a few striae radiating from clypeus and reaching eye; eye 2.7 × as high as length of malar space; malar sulcus absent. Inner margins of eyes slightly converging ventrally. POL 1.7 × as long as OOL, OOL 2.7 × as long as diameter of lateral ocellus and slightly longer than LOL, all ocelli ovate, of the same size. Transfacial distance 1.2 × longer than height of eye; toruli located in the upper half of head and frons distinctly shorter than lower face; diameter of antennal torulus 1.4 × as long as distance between them, distance between torulus and eye slightly longer than diameter of torulus; lower face smooth with white setae and piliferous points; slightly elevated median area smooth, area between toruli reticulate. Clypeus rectangular, broader than high, delicately coriaceous, with a few long setae scattered all over; ventrally rounded, emarginate, without median incision; anterior tentorial pit small, rounded, distinct, epistomal sulcus distinct, clypeo-pleurostomal line well impressed. Frons, interocellar area, vertex, occiput uniformly reticulate, without striae and setae; area under central ocellus impressed, smooth, glabrous; postocciput and postgena alutaceous, with few setae; posterior tentorial pit large, elongated, area below impressed; occipital foramen as high as height of postgenal bridge; hypostomal carina emarginate, continuing into distinct postgenal sulci which diverge strongly toward occipital foramen, postgenal bridge anteriorly slightly broader than occipital foramen. Antenna longer than head + mesosoma, with 12 flagellomeres (suture between F 12 and F 11 not always distinct but present); all flagellomeres with dense setae; pedicel 1.6 x as long as broad; F 1 2.3 × as long as pedicel and 1.4 × as long as F 2; F 2 = F 3 = F 4, F 5 = F 6, subsequent flagellomeres gradually shorter, F 12 slightly shorter than F 11; placodeal sensilla white on F 6 – F 12. Mesosoma as long as high, with a few setae. Pronotum smooth, glabrous dorsally; laterally coriaceous, with denser setae on the anterior margin and delicate striae along posterior edge; propleuron smooth, with sparse white setae. Mesoscutum longer than broad (greatest width measured across mesoscutum level with base of tegulae), uniformly aluraceous-reticulate; with scattered white setae. Notaulus incomplete, not impressed in anterior 1 / 4, deep in posterior 3 / 4 of mesoscutum length, posteriorly converging; at posterior end the distance between notauli shorter than distance between notaulus and side of mesoscutum. Anterior parallel line nearly absent, indicated only by some smooth areas; parapsidal line narrow, impressed, extending to half-length of mesoscutum; parascutal carina narrow, anteriorly reaching notaulus; median mesoscutal line in the form of a short smooth triangle. Mesoscutellum trapezoid, longer than broad, with subparallel sides, broadest part in posterior 1 / 3; circumscutellar carina broad, distinct laterally and posteriorly; mesoscutellum rugoso-coriaceous, overhanging metanotum, with long setae. Mesoscutellar foveae ovate, broader than high, with smooth, glabrous bottom, delimited all around by distinct black carina. Mesopleuron entirely smooth, with setae denser along ventral edge; mesopleural triangle smooth, with dense white setae; dorsal and lateral axillar areas smooth, glabrous, without setae; axillula with delicate parallel longitudinal striae; subaxillular bar smooth, glabrous, triangular, posteriorly as high as height of metanotal trough; metapleural sulcus reaching mesopleuron above half of its height, on lower part sulcus delimiting smooth, glabrous area with dense setae; upper part of sulcus indistinct. Metascutellum coriaceous, 2.0 x as high as height of smooth, glabrous ventral impressed area; metanotal trough smooth, with dense setae; central propodeal area lyre-shaped, smooth, glabrous; lateral propodeal carinae strong, broad and high, bent outwards in posterior 1 / 3; lateral propodeal area smooth, with long white setae. Nucha with net of numerous irregular rugae. Tarsal claws with acute basal lobe. Fore wing longer than body, hyaline, with distinct dense cilia on margin, veins light brown, radial cell open, 4.5 × as long as broad; Rs and R 1 nearly reaching wing margin; areolet triangular, small, closed and indistinct. Rs + M indistinct, invisible. Metasoma longer than head + mesosoma, slightly higher than long in lateral view; 2 nd metasomal tergum extending to half-length of metasoma in dorsal view, with numerous white setae anterolaterally, without micropunctures; all subsequent terga and hypopygium without micropunctures, prominent part of ventral spine of hypopygium 6.3 × as long as broad in ventral view. Body length 1.7 – 2.1 mm (n = 3). Gall (Fig. 366). A hemispherical gall, 3 – 4 mm in diameter and 2 mm high, covered with short, blunt crystalline protuberances with a circle of 12 – 15 longer, broad projections at the base, attached singly or scattered in small numbers on the underside of the leaf. The galls are yellowish-white, often tinged with red. The larval cell lies transversely in the very base of the gall and above it is a cavity above which the crystalline wall of the upper part of the gall is very thick (Weld 1926).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFB9FF9FFF8AA6DCFD6EF808.taxon	biology_ecology	Biology. Only the asexual generation is known, which induces leaf galls on Q. douglasii and Q. garryana (section Quercus, subsection Dumosae) in autumn, the adults emerge the next spring in March (Weld 1926).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFB9FF9FFF8AA6DCFD6EF808.taxon	distribution	Distribution. USA: California (Burks 1979).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFB5FF9BFF8AA4B2FE70FD18.taxon	description	Figs 367 – 371	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFB5FF9BFF8AA4B2FE70FD18.taxon	materials_examined	Type examined. HOLOTYPE: Asexual female “ Cajon Pass, San Bernardino Co., CA. 12.1974. Host: Quercus dumosa; emerged II- 19 - 1974. J. A. Burnett Coll. ”, “ Andricus stellulus det. by J. Burnett ”, red label “ Holotype ”, red label “ Type No. 15448 USNM ”, handwriting label “ Andricus stellulus Burnett ” deposited in USNM, not examined. Specimen data and images available at http: // n 2 t. net / ark: / 65665 / 3 f 622315 a-cbf 9 - 4 fb 2 - 9 eb 6 - c 3694 b 2219 c 0.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFB5FF9BFF8AA4B2FE70FD18.taxon	diagnosis	Diagnosis. Asexual females belong to the group of Feron species characterised by a body which is not black; the head is rounded or trapezoid to triangular in frontal view, ocelli are not elevated above the frons; inner margins of eyes parallel or very slightly converging ventrally, the transfacial distance is equal to or longer than the height of eye; toruli are located above the mid-height of eyes; the eye is less than 3.0 × as high as length of the malar space; lateral ocelli smaller, OOL at least 2.5 × as long as the diameter of the ocellus, if shorter then the head and mesosoma are not yellowish or light brown; the pronotum laterally with longitudinal carinae; the mesoscutum alutaceous to coriaceous, rugose-reticulate, reticulate, without piliferous points and the mesopleuron in the mid-height with transverse reliculate-carinate band; as in F. gigas (asex), F. parmula (asex), F. syndicorum (asex) and some specimens of F. tibiale (asex). Differs from F. tibiale and F. syndicorum in having the gena which is not broadened behind the eye in frontal view. Differs from F. parmula in that the malar space has a few delicate striae radiating from the clypeus, mesoscutellar foveae defined and the prominent part of the ventral spine of the hypopygium 4.5 × as long as broad in ventral view; see more characters at couplet 37 in the key. The most morphologically similar species is F. gigas but F. stellulum has the antenna with 11 flagellomeres (12 in F. gigas), the eye 2.7 × as high as the length of malar space (shorter in F. gigas), veins are brown (lighter in F. gigas), areolet present (absent in F. gigas) and the central propodeal area with rugae (without rugae in F. gigas). Re-description. After Burnett (1974); the images (Figs 367 – 370) can also be consulted at: http: // n 2 t. net / ark: / 65665 / 3 f 622315 a-cbf 9 - 4 fb 2 - 9 eb 6 - c 3694 b 2219 c 0. Head and mesosoma rufescent to yellow brown; antenna with black flagellomeres, legs yellowish brown; metasoma brown. Head coriaceous, transverse in dorsal view, as broad as mesosoma. Occiput flat, gena not broadened behind eyes; vertex slightly projected above as a truncate cone, base laterally extended to ocular sutures, several small humps in area of dorsal ocelli. Malar space 0.37 × of eye height, with a few striae radiating from clypeus, malar sulcus absent. Interocellar area broader than high. Antenna filiform, with 11 flagellomeres, F 1 longer than F 2. Mesonotum coriaceous, with scattered setae; notaulus complete, broader posteriorly; median mesoscutal line absent, parapsidal lines marked with smooth stripes. Mesoscutellum with setae, disc reticulate, longer than broad. Mesoscutellar foveae smooth, partly striate, smooth and shining below. Tarsal claws with strong basal lobe. Propodeal carinae bent outwards, central propodeal area darker than rest of propodeum, glabrous, slightly rugose. Fore wing hyaline, pubescent, with dense cilia on margin, veins brown, radial cell open, 4.0 × as long as broad, areolet distinct, Rs and R 1 not reaching wing margin. Metasoma as high as long, as long as head + mesosoma; 2 nd metasomal tergum with setae anterolaterally, micropunctate, subsequent terga with micropunctures, prominent part of ventral spine of hypopygium 4.5 × as long as broad in ventral view. Body length 1.5 – 2.2 mm. Gall (Fig. 371). Leaf gall. Monolocular and can be found on both sides of the leaves. Disk shaped (1.6 - 2.3 mm in diameter) with some points around the perimeter but erected on a long and slender pedicel, usually slightly broadening towards apex. The gall is almost twice as high as the diameter of the disk (2.3 – 5.6 mm in height). The surface is shiny and glabrous of a reddish colour, the pedicel is crimson, and the disk is rufous. Galls are found attached either to a secondary vein of the leaf blade or occasionally to the midrib, mature galls are typically associated with a brown necrosis around the point of attachment which extends laterally to the leaf-blade margin. Emergence holes made by the gall wasp are usually found in the lateral part of the gall disc (Burnett 1974).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFB5FF9BFF8AA4B2FE70FD18.taxon	biology_ecology	Biology. Only the asexual generation is known, inducing galls on Q. dumosa (section Quercus, subsection Dumosae); adults start to emerge from February.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFB5FF9BFF8AA4B2FE70FD18.taxon	distribution	Distribution. USA: CA.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFB0FF67FF8AA168FDE8FD50.taxon	description	Figs 372 – 383	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFB0FF67FF8AA168FDE8FD50.taxon	materials_examined	Type examined. HOLOTYPE: Asexual female “ Huachuca Mnts. Ariz. ”, “ Bess. Canon ”, “ Q. arizonica ”, “ Cut out Dec. 3.19 ”, “ 910 ”, red label “ Type No. 27193 USNM ”, “ Diplolepis sulfureus Weld ” deposited in USNM, examined by GM. Specimen data and images available at http: // n 2 t. net / ark: / 65665 / 33 b 71 e 4 e 4 - 8126 - 45 ce- 885 e- 8416 e 8853 fd 6. According to Weld (1926) the paratype is deposited at the Leland Stanford Junior University, Stanford, California (not examined by the authors). Additional material. 14 asexual females “ USA, AZ, Chiricahua Mtns nr Portal, galltype 35, ex Q. arizonica, AZ 51, coll. 2007.10.25, leg. J. A. Nicholls ”; 26 females “ USA, AZ, Chiricahua Mtns, western side, ex Q. arizonica, AZ 50, coll. 2007.10.25, leg. J. A. Nicholls ”; 14 females “ USA, AZ, Chiricahua Mtns summit, AZ 49, ex Q. arizonica, coll. 2007.10.25, leg. J. A. Nicholls ”.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFB0FF67FF8AA168FDE8FD50.taxon	diagnosis	Diagnosis. Asexual females together with F. pattersonae (asex) and F. crystallinum (asex), belong to a group of Feron species in which the pronotum has dense setae and piliferous points, without carinae laterally; the mesoscutum is dark brown between notauli in anterior 1 / 3 of the mesoscutum length. Differs from F. pattersonae in the trapezoid head in frontal view (ovate in F. pattersonae) and mesoscutellar foveae are separated by a central carina (fused in F. pattersonae). The morphologically most similar species is F. crystallinum but in F. sulfureum the pronotum is smooth, without piliferous points and all flagellomeres are uniformly broad; for other characters see couplet 26 in the key. Re-description. Asexual female (Figs 372 – 382). Head, antennae, mesosoma, metasoma dark brown; mouthparts light brown. Frons, interocellar area, central elevated area on lower face, gena behind eye, postgena, postocciput black; propleura, mesoscutum between notauli in anterior 2 / 3 of mesoscutum length and stripes along parapsidal lines black; metasoma dorsally always darker, dark brown to black. Legs brown, with black coxae. Head trapezoid, broadest part above toruli, slightly higher than broad and slightly broader than mesosoma in frontal view, with sparse setae, denser on lower face; 2.2 × as broad as long in dorsal view. Gena alutaceous, not broadened behind eye in frontal view, narrower than transverse diameter of eye in lateral view. Malar space with a few delicate striae radiating from clypeus and not reaching eye; eye 3.8 × as high as length of malar space. Inner margins of eyes parallel. POL 1.5 × as long as OOL, OOL slightly longer than diameter of lateral ocellus and shorter than LOL, all ocelli ovate, of same size. Transfacial distance nearly equal to height of eye; toruli located above mid height of head, frons shorter than height of lower face, diameter of antennal torulus 1.5 × as long as distance between them, distance between torulus and eye 1.1 × as long as diameter of torulus; lower face alutaceous, with dense white setae; slightly elevated median area alutaceous-reticulate, with a few setae. Clypeus quadrangular, only slightly broader than high, delicately coriaceous, with a few long setae along ventral edge; ventrally rounded, not emarginate and without median incision; anterior tentorial pit rounded, distinct, epistomal sulcus distinct, clypeo-pleurostomal line well impressed. Frons uniformly alutaceous-reticulate, without striae and setae, areas between toruli and between torulus and eye also alutaceous; interocellar area delicately coriaceous. Vertex and occiput reticulate, with white long setae; postocciput and postgena alutaceous-reticulate, with concentric lines around occipital foramen and postgenal bridge; posterior tentorial pit large, ovate, area below impressed; occipital foramen higher than height of postgenal bridge; hypostomal carina emarginate, continuing into postgenal sulci which diverge strongly toward occipital foramen, postgenal bridge anteriorly slightly broader than occipital foramen. Antenna longer than head + mesosoma, with 11 flagellomeres (in some specimens, antenna with 12 flagellomeres, with a distinct suture between F 12 and F 11), pedicel longer than broad; F 1 slightly longer than F 2 and 2.0 × as long as pedicel; F 2 = F 3 = F 4, F 5 = F 6, F 7 to F 10 equal in length; F 11 longer than F 10; placodeal sensilla on F 4 – F 11. Mesosoma longer than high, with few white setae, setae denser along propleuron and on lateral propodeal area. Pronotum smooth, without striae, with dense setae laterally, without piliferous points; propleuron smooth, with dense setae. Mesoscutum predominantly delicately coriaceous, smooth in between notauli in anterior 1 / 3 and along parapsidal lines; with white sparse setae and distinct piliferous points, slightly longer than broad (greatest width measured across mesoscutum level with base of tegulae). Notaulus complete, slightly converging posteriorly; at posterior end the distance between notauli shorter than distance between notaulus and side of mesoscutum; anterior parallel line in the form of short, delicately impressed smooth stripes; parapsidal line marked with broad smooth, impressed area; median mesoscutal line absent; parascutal carina broad, reaching notaulus. Mesoscutellum elongated, longer than broad, broadest part in posterior 1 / 4 of its length, circumscutellar carina present; disk of mesoscutellum reticulate, dull rugose laterally and posteriorly, overhanging metanotum, with sparse long setae. Mesoscutellar foveae transverse, broader than high, with smooth, glabrous bottom, with elevated coriaceous triangular central carina. Mesopleuron entirely smooth, glabrous, without striae, with a few long white setae along ventral edge; mesopleural triangle smooth, with dense, long white setae; dorsal and lateral axillar areas smooth, with dense white setae; axillula with delicate parallel longitudinal striae; subaxillular bar smooth, glabrous, with parallel sides, posteriorly as high as height of metanotal trough; metapleural sulcus reaching mesopleuron at half of its height; upper and lower parts of sulcus distinct, delimiting smooth areas with dense long white setae. Metascutellum smooth, glabrous, higher than height of smooth, glabrous ventral impressed area; metanotal trough smooth, with dense white setae; central propodeal area lyre-shaped, smooth, glabrous, with a few irregular short rugae; lateral propodeal carinae distinct, slightly bent outwards in posterior 1 / 3 of its height; lateral propodeal area smooth, with long dense white setae and few visible piliferous points. Nucha with numerous sulci dorsally and laterally. Tarsal claws with basal lobe. Fore wing longer than body, hyaline, with short cilia on margin, veins dark brown, radial cell open, 4.2 × as long as broad; R 1 nearly reaching wing margin, Rs reach wing margin; areolet triangular, small, closed and distinct. Rs + M distinct, its projection reaching basalis in lower 1 / 3 of its height. Metasoma as long as head + mesosoma, slightly longer than high in lateral view; 2 nd metasomal tergum extending to 3 / 4 length of metasoma in dorsal view, with numerous white setae anterolaterally, without micropunctures; all subsequent terga and hypopygium without micropunctures. Prominent part of ventral spine of hypopygium 5.5 × as long as broad in ventral view, with few short white setae ventrally. Body length 1.8 – 2.3 mm (n = 10). Gall (Fig. 383). A hollow cone, sessile at base and open at apex, densely covered with long sulphur-yellow spines, on under surface of leaf, single or scattered, sometimes as many as nine on a leaf but usually only one to three. The cone is up to 7 mm high by 4 mm in diameter at base, with a crystalline surface, white or rosy when growing, the spines up to 4 mm long and often rosy at the tip. The larval cell lies transversely just below the middle of gall and below it is a small obconical cavity reaching to point of attachment. The lower part of the large distal cavity above larval cell is constricted by a narrow circular shelf.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFB0FF67FF8AA168FDE8FD50.taxon	biology_ecology	Biology. Only the asexual generation is known, which induces galls on multiple oaks fromsection Quercus, subsection Leucomexicana: Q. arizonica, Q. grisea and Q. oblongifolia. Galls mature in the autumn dropping only with the leaf; adults emerge in late March-April.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFFB0FF67FF8AA168FDE8FD50.taxon	distribution	Distribution. USA, Arizona only.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF4CFF60FF8AA0A7FBAFF844.taxon	description	Figs 384 – 394 urn: lsid: zoobank. org: act: 693 BC 07 D- 2 CAB- 4 B 81 - 869 D- 27 ABEDE 48 D 87	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF4CFF60FF8AA0A7FBAFF844.taxon	materials_examined	Type material. HOLOTYPE, asexual female “ Mexico (Code 077), La Cumbre (Monte Escobedo, ZAC), 22 º 19 ’ 8.9 ’’ N 103 º 38 ’ 53,42 ’’ W, ex Q. potosina Humb. & Bonpl Trell., (05, 11.2010) 15.12.2010, leg. C. Carrillo, O. Cabral, R. Treto & L. Landa ” deposited in UB. PARATYPES (5 asexual females) labeled as the holotype. Two paratypes deposited in UB, and three paratypes in PHDNRL.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF4CFF60FF8AA0A7FBAFF844.taxon	etymology	Etymology: Syndicus is the Latinization of the Greek σύνδικος (σύν = with and δίκη = justice), which means one who acts with justice. We use the plural because it is dedicated to the 5 ‘ sindics’ of October 1, 2017: Marc Marsal i Ferret (lawyer, he was a consultant to the Online University of Catalonia, UOC), Josep Pagès i Masó (Autonomous University of Bellaterra, UAB), Jordi Matas i Dalmases (Barcelona University, UB), Tània Verge i Mestre (Pompeu Fabra University, UPF) and Marta Alsina Conesa (lawyer, currently defender of the citizens of Girona). To them all for their commitment to democracy.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF4CFF60FF8AA0A7FBAFF844.taxon	diagnosis	Diagnosis. Asexual females are part of the group of Feron species that are characterised by the body never being black; head trapezoid in frontal view; ocelli are not elevated above the frons; inner margins of eyes parallel or converging very slightly ventrally, the transfacial distance is longer than the height of eye; antenna with 12 flagellomeres, sometimes suture between F 11 and F 12 incomplete; toruli are located above the mid-height of eyes; the eye is less than 3.0 × as high as the length of the malar space; the pronotum laterally with longitudinal carinae; the mesoscutum alutaceous to coriaceous, rugose-reticulate, reticulate, without distinct piliferous points; and the mesopleuron with a transversal striate band; as in F. gigas (asex), F. parmula (asex), F. stellulum and some specimens of F. tibiale (asex). Differs from F. gigas, F. parmula, and F. stellulum in having the gena broadened behind the eye. The most similar species is the asexual form of F. tibiale but in F. syndicorum the mesoscutum is finely alutaceous; the notaulus is complete but shallow and alutaceous at least on anterior 3 / 4 of its length; the mesoscutellar disk is strongly curved in lateral view, which makes the mesoscutum and mesoscutellum appear as two independent lobes in lateral view; and the subaxillular bar reaches 1 / 3 of the height of mesoscutellum. Feron tibiale (part) is coarsely reticulated on the mesoscutum, has complete notaulus but which is inconspicuous on anterior 1 / 4 of its length; the mesoscutellum is flat in lateral view and forms a continuous curve with the mesoscutum in lateral view; and the subaxillular bar reaches half the height of metascutellum.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF4CFF60FF8AA0A7FBAFF844.taxon	description	Description. Asexual female (Figs 384 – 393). Head, mesosoma, metasoma light brown to reddish brown; antennae slightly darker distally. Head trapezoid in frontal view, broadest part on the level of half height of eye; with sparse setae, denser on lower face; 2.0 × as broad as long in dorsal view. Gena alutaceous broadened behind eye in frontal view, subequal to transverse diameter of eye in lateral view. Malar space with a few delicate striae radiating from clypeus and reaching eye; eye 2.6 × as high as length of malar space. Inner margins of eyes parallel. POL 1.5 × as long as OOL, OOL 2.0 × as long as diameter of lateral ocellus and 1.3 × as long as LOL, all ocelli ovate, of same size. Transfacial distance 1.1 x as long as height of eye; toruli located slightly above mid height of head, frons shorter than height of lower face, diameter of antennal torulus 1.5 × as long as distance between them, distance between torulus and eye 1.5 × as long as diameter of torulus; lower face smooth, with dense white setae; slightly elevated median area alutaceous, with a few setae. Clypeus trapezoid, broader than high, alutaceous, with a few long setae along ventral edge; ventrally rounded, not emarginate and without median incision; anterior tentorial pit rounded, distinct, epistomal sulcus distinct, clypeo-pleurostomal line well impressed. Frons uniformly alutaceous-reticulate, without striae and with a few setae, areas between toruli and between torulus and eye also alutaceous; interocellar area alutaceous-reticulate. Vertex, occiput, postgena alutaceous, with white long setae; postocciput alutaceous-reticulate, with concentric lines around occipital foramen and postgenal bridge; posterior tentorial pit large, elongated, area below impressed; occipital foramen as high as height of postgenal bridge; hypostomal carina emarginate, continuing into postgenal sulci which diverge strongly toward occipital foramen, postgenal bridge anteriorly slightly broader than occipital foramen. Antenna longer than head + mesosoma, with 11 flagellomeres (some specimens with 12 flagellomeres with a distinct suture between F 12 and F 11), F 6 until F 11 – F 12 gradually broadening towards apical end, pedicel slightly longer than broad; F 1 1.5 × as long as pedicel and 1.5 × as long as F 2; F 2 = F 3 = F 4, F 5 to F 10 nearly equal in length, F 11 longer than F 10; placodeal sensilla on F 5 – F 11. Mesosoma 1.2 × as long as high, with sparse white setae, except dense setae on lateral propodeal area. Pronotum delicately striate, with sparse setae; propleuron alutaceous, glabrous. Mesoscutum alutaceous to reticulate, with shallow piliferous points, smooth along parapsidal lines with sparse white setae, slightly longer than broad (greatest width measured across mesoscutum level with base of tegulae). Notaulus complete, shallow, bottom smooth on posterior 1 / 4 of its length and alutaceous-reticulate on the anterior 3 / 4, posteriorly slightly broader and slightly converging; at posterior end the distance between notauli shorter than distance between notaulus and side of mesoscutum; anterior parallel line distinct, in the form of a bare, smooth stripe, extending to half-length of mesoscutum; parapsidal line distinct, marked with broad impressed smooth glabrous stripes; median mesoscutal line absent; parascutal carina broad, reaching notaulus. Mesoscutellum ovate, slightly broader than long, circumscutelar carina absent; disk of mesoscutellum alutaceous, dull rugose laterally and posteriorly, overhanging metanotum, with dense setae. Mesoscutellar foveae oblique, inconspicuously divided by an alutaceous central elevated area; foveae with smooth, glabrous bottom, occupying at least 1 / 3 of mesoscutellum length. Mesopleuron delicately striate and glabrous, posterior margin smooth; with setae in ventral part; mesopleural triangle smooth, with numerous short white setae; dorsal and lateral axillar areas smooth, with dense white setae; subaxillular bar smooth, glabrous, triangular, as high as 1 / 3 of height of metascutellum; metapleural sulcus reaching mesopleuron at half of its height, upper part of sulcus present, lower part of sulcus separating smooth, glabrous area, with dense setae. Metascutellum alutaceous to smooth, glabrous, 3.0 × as high as height of smooth, glabrous ventral impressed area; metanotal trough smooth, with some setae; central propodeal area lyre-shaped, glabrous, with irregular interrupted rugae at the base in large specimens; lateral propodeal carinae distinct, bent outwards in posterior 1 / 3; lateral propodeal area smooth, with long dense white setae. Nucha with numerous sulci dorsally and laterally. Tarsal claws with basal lobe. Fore wing longer than body, hyaline, with distinct dense cilia on margin, veins dark brown, radial cell open, 3.9 × as long as broad; R 1 and Rs not reaching wing margin; areolet small, triangular, almost indistinct. Rs + M distinct, not reaching basalis, its projection reaching basalis slightly above mid height. Metasoma as long as head + mesosoma, higher than long than in lateral view; 2 nd metasomal tergum extending to 2 / 3 of metasoma length in dorsal view, with short white setae anterolaterally, without micropunctures; subsequent terga and hypopygium smooth, glabrous, with micropunctures. Prominent part of ventral spine of hypopygium 4.8 × as long as broad in ventral view, with some short setae ventrally which not extend beyond apex of spine. Body length 2.1 – 2.2 mm (n = 2). Gall (Fig. 394). Yellow crystalline leaf gall mass (aggregation of galls, 5 - 20 galls) on underside of leaf, to 20 mm long projecting from leaf by up to 15 mm. Larval chambers easily detachable from leaf and crystalline pubescence extremely brittle.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF4CFF60FF8AA0A7FBAFF844.taxon	biology_ecology	Biology. Only the asexual generation is known, which induces galls on Q. potosina (section Quercu s, subsection Leucomexicana). The gall matures in late autumn and the adults emerge soon after.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF4CFF60FF8AA0A7FBAFF844.taxon	distribution	Distribution. Mexico, La Cumbre (Monte Escobedo, State of Zacatecas).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF48FF6FFF8AA2E0FC21FDCC.taxon	description	Figs 395 – 408	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF48FF6FFF8AA2E0FC21FDCC.taxon	materials_examined	Types examined. The original description mentioned 8 asexual female cotypes without the designation of a holotype. Lectotype female was designated in Ferrer-Suay et al. (2017): “ San Luis Potosi. Mex., Edw. Palmer Coll., loose in box ”, “ Q. potosina, Edw. Palmer coll. ”, red “ Andricus tecturnarum, Cotype ”, deposited in AMNH, NYC, examined by GM. Additional material. “ Mexico (Code 014), Sierra Fria, (Aguascalientes, AGC), 20 º 11 ’ 51.1 ’’ N 102 º 35 ’ 29.5 W, ex Q. potosina, (02 - 12 - 2010) 14. ii. 2011: 6 asexual females (2 females PHDNRL, 4 females UB), leg. A. Equihua & E. Estrada ”; “ Mexico (Code 025), Carretera Nochistlán-Tlachichila, (Nochistlán de Mejía, ZAC), 21 º 27 ’ 29.1 ’’ N 102 º 50 ’ 4.2 ’’ W, ex Q. potosina Trell., (04 - 12 - 2010) 15. ii. 2011: 13 asexual females (5 females PHDNRL, 8 females UB), leg. A. Equihua & E. Estrada ”.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF48FF6FFF8AA2E0FC21FDCC.taxon	diagnosis	Diagnosis. Asexual females are part of the group of Feron species characterised by never having the body black; head transversely ovate in frontal view, with the median area of lower face elevated and alutaceous to delicately coriaceous; the gena at least slightly broadened behind the eye; ocelli are not elevated above the frons; OOL at least 2.5 × as long as the diameter of the ocellus, inner margins of eyes parallel or very slightly converging ventrally, the transfacial distance is longer than the height of eye; antenna with 12 flagellomeres, sometimes suture between F 11 and F 12 incomplete; toruli are located above the mid-height of eyes; the eye is less than 3.0 × as high as the length of the malar space; lateral ocelli smaller, the pronotum laterally with longitudinal carinae that reach at least half the length of the pronotum; the mesoscutum coarsely reticulated, without piliferous points and the mesopleuron is entirely smooth; as in F. serranoae (asex), F. tetyanae (asex), and some F. tibiale (asex). Feron tecturnarum differs from F. serranoae in having the mesoscutellum only slightly longer than broad and without circumscutellar carina, while F. serranoae has the mesoscutellum 1.3 x longer than broad and with a strong circumscutellar carina. The most similar species is the asexual form of F. tetyanae and both differ from F. tibiale in the chestnut or rusty brown body colour, frons not bulging, POL at least 1.4 x longer than OOL, the genae not broadened behind the eyes, the mesoscutellar disk smooth or finely rugose and radial cell 3.7 x longer than broad, while the F. tibiale within this group are yellowish or light brown, with the frons bulging, POL subequal to OOL, genae broadened behind the eyes, the mesoscutellar disk reticulate-coriaceous and radial cell 4.8 x longer than broad. Feron tecturnarum differs from F. tetyanae in the body being uniformly rusty brown, the head of the same colour as the rest of the body, without dark marks, the frons is finely alutaceous, mesoscutellar foveae divided by a triangular elevated coriaceous central carina, while F. tetyanae is chestnut brown with the head darker than mesosoma in frontal view, the frons is coarsely coriaceous and the mesoscutellar foveae are divided by a fine carina.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF48FF6FFF8AA2E0FC21FDCC.taxon	description	Re-description. Asexual female (Figs 395 – 406). Head, mesosoma, metasoma rusty brown, antennae darker distally; legs lighter. Head slightly transverse, ovate in frontal view, broadest part level with halfway up eye, with sparse setae, denser on lower face; 2.0 – 2.4 × as broad as long in dorsal view. Gena alutaceous, broadened behind eye in frontal view, slightly broader than transverse diameter of eye in lateral view. Malar space with a few delicate striae radiating from clypeus and reaching eye; eye 2.2 × as high as length of malar space. Inner margins of eyes parallel. POL 1.5 × as long as OOL, OOL 2.6 × as long as diameter of lateral ocellus and 1.6 × as long as LOL, all ocelli ovate, of same size. Transfacial distance 1.3 × as long as height of eye; toruli located slightly above mid height of head, frons shorter than height of lower face, diameter of antennal torulus 1.5 × as long as distance between them, distance between torulus and eye 1.3 × as long as diameter of torulus; lower face smooth, with dense white setae; slightly elevated median area alutaceous, with a few setae. Clypeus rectangular, broader than high, alutaceous, with a few long setae along ventral edge; ventrally rounded, not emarginate and without median incision; anterior tentorial pit rounded, distinct, epistomal sulcus distinct, clypeo-pleurostomal line well impressed. Frons uniformly alutaceous-reticulate, without striae and with a few setae, areas between toruli and between torulus and eye also alutaceous; interocellar area alutaceous-reticulate. Vertex, occiput, postgena alutaceous, with white long setae; postocciput alutaceous-reticulate, with concentric lines around occipital foramen and postgenal bridge; posterior tentorial pit large, elongated, area below impressed; occipital foramen as high as height of postgenal bridge; hypostomal carina emarginate, continuing into postgenal sulci which strongly diverge toward occipital foramen, postgenal bridge anteriorly slightly broader than occipital foramen. Antenna longer than head + mesosoma, with 11 flagellomeres (some specimens with 12 flagellomeres with a distinct suture between F 12 and F 11), pedicel slightly longer than broad; F 1 2.0 × as long as pedicel and 1.3 × as long as F 2; F 2 = F 3 = F 4, F 5 to F 10 nearly equal in length, F 11 longer than F 10; placodeal sensilla on F 5 – F 11. Mesosoma 1.2 × as long as high, with sparse white setae, except dense setae on lateral propodeal area. Pronotum alutaceous, with sparse setae, with some delicate striae in dorsoposterior quarter in lateral view; propleuron alutaceous, glabrous. Mesoscutum alutaceous to reticulate, smooth along parapsidal lines with sparse white setae, slightly longer than broad (greatest width measured across mesoscutum level with base of tegulae). Notaulus incomplete, deep, bottom smooth, posteriorly broader and slightly converging; at posterior end the distance between notauli shorter than distance between notaulus and side of mesoscutum; anterior parallel line distinct, in the form of a bare, smooth stripe, extending to half-length of mesoscutum; parapsidal line distinct, marked with broad impressed smooth glabrous stripes; median mesoscutal line absent; parascutal carina broad, reaching notaulus. Mesoscutellum ovate, slightly longer than broad, circumscutellar carina present; disk of mesoscutellum dull rugose, and more coarsely rugose laterally and posteriorly, overhanging metanotum, with dense setae. Mesoscutellar foveae divided by a triangular elevated area, foveae with smooth, glabrous bottom, occupying at least 1 / 3 of mesoscutellum length. Mesopleuron smooth, with delicate striae on anterior margin, with setae in antero and posteroventral part; mesopleural triangle smooth, with numerous short white setae; dorsal and lateral axillar areas smooth, with dense white setae; subaxillular bar smooth, glabrous, triangular, as high as height of metanotal trough; metapleural sulcus reaching mesopleuron at half of its height, upper part of sulcus indistinct, lower part of sulcus separating smooth, glabrous area, with dense setae. Metascutellum alutaceous to smooth, glabrous, 3.0 x as high as height of smooth, glabrous ventral impressed area; metanotal trough smooth, with some setae; central propodeal area lyre-shaped, smooth, glabrous, with irregular interrupted rugae at the base in large specimens; lateral propodeal carinae strong, bent outwards in posterior 1 / 3; lateral propodeal area smooth, with long dense white setae. Nucha with numerous sulci dorsally and laterally. Tarsal claws with basal lobe. Fore wing longer than body, hyaline, with distinct dense cilia on margin, veins dark brown, radial cell open, 3.8 × as long as broad; R 1 and Rs not reaching wing margin; areolet small, triangular, closed, and distinct. Rs + M distinct, its projection reaching basalis slightly above mid height. Metasoma as long as head + mesosoma, higher than long than in lateral view; 2 nd metasomal tergum extending to 2 / 3 of metasoma length in dorsal view, with short white setae anterolaterally, without micropunctures; subsequent terga and hypopygium smooth, glabrous, with almost inconspicuous micropunctures. Prominent part of ventral spine of hypopygium 5.5 × as long as broad in ventral view, with some short setae ventrally which do not extend beyond apex of spine. Body length 2.2 – 2.4 mm (n = 15). Gall (Figs 407 – 408). Reddish-yellow furry leaf gall mass; a gregarious cluster of individual cells, 10 – 25 galls, placed on the underside of leaf, to 20 mm long projecting from leaf by up to 15 mm.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF48FF6FFF8AA2E0FC21FDCC.taxon	biology_ecology	Biology. The asexual generation is only known, which induces galls on Q. potosina (section Quercus, subsection Leucomexicana). Previous host records for the name Andricus tecturnarum from white oaks found in the southwest of the USA (e. g. Weld 1960, Burks 1979) are almost definitely attributable to the newly described species F. tetyanae, which is newly recognised in this study as being distinct from F. tecturnarum (based on both morphology and DNA sequences). The gall matures in late autumn, adults start emerging the next February.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF48FF6FFF8AA2E0FC21FDCC.taxon	distribution	Distribution. Mexico: San Luis Potosi (Kinsey 1920, authors).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF44FF6BFF8AA01CFD03F808.taxon	description	Figs 409 – 428 urn: lsid: zoobank. org: act: 89 FB 0 D 61 - C 6 EF- 47 AF- 9 CF 7 - C 96 AC 3520 F 57	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF44FF6BFF8AA01CFD03F808.taxon	materials_examined	Type material. HOLOTYPE asexual female “ USA, AZ, 25 miles S of Flagstaff on I 17, galltype 40 b, ex Q. turbinella, AZ 422; coll. 2007.10.31., leg. J. A. Nicholls ”. PARATYPES (86 asexual females): 19 females “ USA, AZ, 25 miles S of Flagstaff on I 17, galltype 40 b, ex Q. turbinella, AZ 422; coll. 2007.10.31., leg. J. A. Nicholls ”; 3 females “ USA, AZ, Chiricahua Mtns nr Portal, ex Q. turbinella, AZ 500, AZ 501, AZ 509; coll. 2007.10.31., leg. J. A. Nicholls ”; 65 females “ USA, AZ, Chiricahua Mtns summit, ex Q. turbinella, AZ 552, AZ 581, AZ 527; coll. 2007.10.26., leg. J. A. Nicholls ”. The holotype and five paratypes deposited at the USNM, 71 paratypes deposited in the PHDNRL and 10 paratypes in UB (Barcelona).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF44FF6BFF8AA01CFD03F808.taxon	etymology	Etymology. Species is dedicated to Tetyana Melika, wife of the second author, for her unconditional understanding and many years support for his studies of world Cynipidae.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF44FF6BFF8AA01CFD03F808.taxon	diagnosis	Diagnosis. Asexual females are in the group of Feron species characterised by never having the body black; head transversely ovate in frontal view; the gena at least slightly broadened behind the eye; ocelli are not elevated above the frons; inner margins of eyes parallel or very slightly converging ventrally, the transfacial distance is longer than the height of eye; antenna with 12 flagellomeres, sometimes suture between F 11 and F 12 incomplete; toruli are located above the mid-height of eyes; the eye is less than 3.0 × as high as the length of the malar space; lateral ocelli smaller, OOL at least 2.5 × as long as the diameter of the ocellus, if shorter then the head and mesosoma are not yellowish or light brown; the pronotum laterally with longitudinal carinae; the mesoscutum alutaceous to coriaceous, rugose-reticulate, reticulate, without piliferous points and the mesopleuron is entirely smooth; as in F. caepula (asex), F. rucklei (asex), F. scutellum (asex), F. stellare (asex) and some F. tibiale (asex). Differs from F. caepula, F. rucklei, F. scutellum and F. stellare in having the slightly elevated median area of the lower face alutaceous to delicately coriaceous, matte, and the mesoscutellar foveae are fused or divided by an incomplete triangular coriaceous elevated area. Feron tetyanae belongs to the morphological species group comprising F. serranoae (asex), F. tecturnarum (asex) and some F. tibiale (asex). The most similar species is the asexual form of F. tecturnarum and both differ from F. tibiale in the chestnut or rusty brown body colour, frons not bulging, POL at least 1.4 × as long as OOL, the genae not broadened behind the eyes, the mesoscutellar disk smooth or finely rugose and radial cell 3.7 × as long as broad, while the F. tibiale within this group are yellowish or light brown, with the frons bulging, POL subequal to OOL, genae broadened behind the eyes, the mesoscutellar disk reticulate-coriaceous and radial cell 4.8 × as long as broad. Feron tetyanae differs from F. tecturnarum in the chestnut brown body with the head darker than mesosoma in frontal view, the frons is coarsely coriaceous and the mesoscutellar foveae are divided by a fine carina while in F. tecturnarum the body is uniformly rusty brown, the head of the same colour as the rest of the body, without dark marks, the frons is finely alutaceous, mesoscutellar foveae divided by a triangular elevated coriaceous central carina.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF44FF6BFF8AA01CFD03F808.taxon	description	Description. Asexual female (Figs 409 – 427). Head, mesosoma, metasoma chestnut brown, head always darker than mesosoma; antennae slightly lighter; mouthparts, legs lighter, with darker coxae. In some specimens antennae darker towards apical end; mesosoma in between notauli in anterior half dark brown to black and black stripes present along parapsidal lines. Head slightly transverse, ovate in frontal view, broadest part level with halfway up eye, with sparse setae, denser on lower face; 2.2 × as broad as long in dorsal view. Gena alutaceous, not or only very slightly broadened behind eye in frontal view in small specimens, narrower than transverse diameter of eye in lateral view. Malar space with a few delicate striae radiating from clypeus and reaching eye; eye 2.3 × as high as length of malar space. Inner margins of eyes parallel. POL 1.7 × as long as OOL, OOL 2.5 × as long as diameter of lateral ocellus and 1.2 × as long as LOL, all ocelli ovate, of same size. Transfacial distance 1.3 × as long as height of eye; toruli located slightly above mid height of head, frons shorter than height of lower face, diameter of antennal torulus 1.2 × as long as distance between them, distance between torulus and eye 1.4 × as long as diameter of torulus; lower face smooth, with dense white setae; slightly elevated median area alutaceous, with a few setae. Clypeus rectangular, broader than high, alutaceous, with a few long setae along ventral edge; ventrally rounded, not emarginate and without median incision; anterior tentorial pit rounded, distinct, epistomal sulcus distinct, clypeo-pleurostomal line well impressed. Frons uniformly alutaceous-reticulate, without striae and with a few setae, areas between toruli and between torulus and eye also alutaceous; interocellar area alutaceous-reticulate. Vertex, occiput, postgena alutaceous, with white long setae; postocciput alutaceous-reticulate, with concentric lines around occipital foramen and postgenal bridge; posterior tentorial pit large, elongated, area below impressed; occipital foramen as high as height of postgenal bridge; hypostomal carina emarginate, continuing into postgenal sulci which diverge strongly toward occipital foramen, postgenal bridge anteriorly slightly broader than occipital foramen. Antenna longer than head + mesosoma, with 11 flagellomeres (some specimens with 12 flagellomeres with a distinct suture between F 12 and F 11), F 6 until F 11 – F 12 gradually broadening towards apical end, pedicel slightly longer than broad; F 1 1.4 × as long as pedicel and 1.3 × as long as F 2; F 2 = F 3 = F 4, F 5 to F 10 nearly equal in length, F 11 longer than F 10; placodeal sensilla on F 5 – F 11. Mesosoma 1.2 × as long as high, with sparse white setae, except dense setae on lateral propodeal area. Pronotum smooth, with sparse setae, with some delicate striae in dorsoposterior quarter in lateral view; propleuron alutaceous, glabrous. Mesoscutum alutaceous to reticulate, smooth along parapsidal lines with sparse white setae, slightly longer than broad (greatest width measured across mesoscutum level with base of tegulae). Notaulus complete, deep, bottom smooth, posteriorly broader and slightly converging; at posterior end the distance between notauli shorter than distance between notaulus and side of mesoscutum; anterior parallel line distinct, in the form of a bare, smooth stripe, extending to half-length of mesoscutum; parapsidal line distinct, marked with broad impressed smooth glabrous stripes; median mesoscutal line absent; parascutal carina broad, reaching notaulus. Mesoscutellum ovate, slightly longer than broad, circumscutellar carina present; disk of mesoscutellum smooth, glabrous, dull rugose laterally and posteriorly, overhanging metanotum, with dense setae. Mesoscutellar foveae fused in the form of a semilunar depression, with smooth, glabrous bottom, occupying at least 1 / 3 of mesoscutellum length. Mesopleuron entirely smooth, with setae in antero and posteroventral part; mesopleural triangle smooth, with numerous short white setae; dorsal and lateral axillar areas smooth, with dense white setae; subaxillular bar smooth, glabrous, triangular, as high as height of metanotal trough; metapleural sulcus reaching mesopleuron at half of its height, upper part of sulcus indistinct, lower part of sulcus separating smooth, glabrous area, with dense setae. Metascutellum alutaceous to smooth, glabrous, 3.0 x as high as height of smooth, glabrous ventral impressed area; metanotal trough smooth, with some setae; central propodeal area lyre-shaped, smooth, glabrous, with irregular interrupted rugae at the base in large specimens; lateral propodeal carinae strong, bent outwards in posterior 1 / 3; lateral propodeal area smooth, with long dense white setae. Nucha with numerous sulci dorsally and laterally. Tarsal claws with basal lobe. Fore wing longer than body, hyaline, with distinct dense cilia on margin, veins dark brown, radial cell open, 3.7 × as long as broad; R 1 and Rs not reaching wing margin; areolet small, triangular, closed and distinct. Rs + M distinct, its projection reaching basalis slightly above mid height. Metasoma as long as head + mesosoma, higher than long than in lateral view; 2 nd metasomal tergum extending to 2 / 3 of metasoma length in dorsal view, with short white setae anterolaterally, without micropunctures; subsequent terga and hypopygium smooth, glabrous, without micropunctures. Prominent part of ventral spine of hypopygium 5.0 × as long as broad in ventral view, with some short setae ventrally which do not extend beyond apex of spine. Body length 1.4 – 2.2 mm (n = 15). Gall (Fig. 428). Reddish-yellow furry leaf gall mass, a gregarious cluster of individual cells. Hairs covering the gall cluster are quite brittle and crystalline. On underside of leaf, to 20 mm long, projecting from leaf by up to 15 mm.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF44FF6BFF8AA01CFD03F808.taxon	biology_ecology	Biology. Only the asexual generation is only known, which induces galls on Q. arizonica, Q. oblongifolia, Q. turbinella and Q. toumeyi (section Quercus, subsection Leucomexicana) and on Q. gambelii (section Quercus, subsection Dumosae) (Burks 1979). The gall matures in late autumn and adults start emerging the next spring. This species is newly recognized as being distinct from F. tecturnarum (based on both morphology and DNA sequences); all specimens we have examined from previous collectors taken in the USA south-west and identified as F. tecturnarum show the diagnostic characters of F. tetyanae, so we consider that all records of F. tecturnarum from the USA should actually be attributed to the new taxon F. tetyanae.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF44FF6BFF8AA01CFD03F808.taxon	distribution	Distribution. USA: New Mexico, Arizona.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF41FF72FF8AA2E0FE2FFD18.taxon	description	Figs 429 – 463	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF41FF72FF8AA2E0FE2FFD18.taxon	materials_examined	Types examined. Holotypes and paratypes of F. tibiale, F. uterinum, and F. tostum deposited at the AMNH, NYC were examined. Feron tibiale, HOLOTYPE asexual female “ Mex (City) 25 E D. F. 7000 ’, Mex. Gall 1 - 2 - 32, 138 fms. 3 - 2 - 32 ”, “ Q. texcocana, Kinsey coll. ”, red “ Xystoteras tibialum; PARATYPES (10 asexual females) “ Mex (City) 25 E, D. F. 7000 ’ Mex. Gall 1.2.32, 48 females 3.15.32. ”, “ Q. texcocana Kinsey Coll. ”, red Kinsey’s handwriting label “ Xyst. tibialum Paratype ”. Holo- Paratype ”. Feron tostum, HOLOTYPE asexual female “ Namiquipa 30 W Chi. 5200 ’, Mex. Gall 10 - 18 - 31, very many fms. 3 - 10 - 32 ”, “ Q. chihuahuens, Kinsey coll. ”, red “ Xyst. tostum, Holo-Paratype ”. Feron uterinum, HOLOTYPE asexual female “ Queretaro 28 N Qro 7300 ’, Mex. Gall 1 - 17 - 32, 6 fms. 3 - 26 - 32 ”, “ Q. chihuahuens, Kinsey coll. ”, red “ Xyst. uterium, Holo- Paratype ”; PARATYPES (9 asexual females on 5 pins and one gall) “ Queretaro 28 N, Qro 7300 ’ Mex. Galls 1.17.32, 119 females 3.10.32 ”, “ Q. chihuahuens Kinsey coll. ”, red handwriting label “ Xyst. uterinum Paratype ”. The general collection of the AMNH in NYC holds a large number of deposited paratypes. Additional material. 56 asexual females: “ MEX- 101, Mexico, Ciudad de Mexico, Santa Fe, ex Q. rugosa, (16. i. 2018) 17 - 31. i. 2018: 10 females, leg. O. Cabral, R. Treto, L. G. Landa & C. Carrillo ”; “ MEX- 195, Mexico, Mexico, San Felipe del Progreso, Tunal Salto, ex Q. glaucoides, (15. ii. 2014) 21. ii. 2014: 4 females, leg. R. D. García-Martiñón ”; “ MEX- 205, Mexico, Mexico, San Felipe del Progreso, Tunal Salto, ex Q. glaucoides, (26. xii. 2013) 14 - 16. ii. 2014: 23 females (plus one specimen for DNA extraction), leg. R. D. García-Martiñón ”; “ MEX- 208, Mexico, Mexico, San Felipe del Progreso, Tunal Salto, ex Q. glabrescens, (26. xii. 2013) 21 - 23. i. 2014: 11 females (plus one specimen for DNA extraction), leg. R. D. García-Martiñón ”; “ MEX- 500, Mexico, Mexico, Tepoztlán, Arcos del Sitio (19 º 45 ’ 36.9 ” N, 99 º 20 ’ 40.4 ” W), ex Q. obtusata, (09. ix. 2007) 08. x. 2007: 9 females, leg. Chagoyán-García. ”.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF41FF72FF8AA2E0FE2FFD18.taxon	diagnosis	Diagnosis. Asexual females belong to the group of Feron species characterised by never having a black body; head rounded or trapezoid to triangular in frontal view, ocelli are not elevated above the frons; inner margins of eyes parallel or very slightly converging ventrally, the transfacial distance is equal to or longer than the height of eye; toruli are located above the mid-height of eyes; the eye is less than 3.0 × as high as length of the malar space; lateral ocelli are smaller, OOL at least 2.5 × as long as the diameter of the ocellus, if shorter then the head and mesosoma are not yellowish or light brown; the pronotum laterally with longitudinal carinae; the mesoscutum is alutaceous to coriaceous, rugose-reticulate or reticulate, without piliferous points. Specimens of F. tibiale can be divided into two different morphological groups with respect to sculpturing of their mesopleuron, either smooth or with a transverse reticulated-carinated band. The morphotype with a transverse band at mid-height of mesopleuron is similar to F. gigas (asex), F. parmula (asex), F. stellulum (asex) and F. syndicorum (asex). Feron tibiale differs from F. gigas, F. parmula and F. stellulum in having the gena broadened behind the eye in frontal view (while the gena is not broadened behind the eye in frontal view in F. gigas, F. parmula and F. stellulum). The most similar species is the asexual form of F. syndicorum but that species differs from the asexual form of F. tibiale (part) in that the mesoscutum is finely alutaceous; the notaulus is complete but shallow and alutaceous at least on anterior 3 / 4 of its length; the mesoscutellar disk is strongly curved in lateral view, which makes the mesoscutum and mesoscutellum form two independent lobes in lateral view; and the subaxillular bar reaches 1 / 3 of the height of mesoscutellum. Feron tibiale (part) is coarsely reticulated on the mesoscutum, has a complete notaulus which is inconspicuous on anterior 1 / 4 of its length; the mesoscutellum is flat in lateral view and forms a single curve with the mesoscutum in lateral view; and the subaxillular bar reaches half the height of metascutellum. The specimens with smooth mesopleura belong to the group of Feron species characterised by having antennae with 12 flagellomeres; head transversely ovate in frontal view, lateral sides of the pronotum longitudinally striated at least on the posterior half, remainder of the pronotum alutaceous, matte; as in F. serranoae (asex), F. tecturnarum (asex) and F. tetyanae (asex). This morphotype of F. tibiale differs from F. serranoae in having the mesoscutellum slightly longer than broad and circumscutellar carina absent, while the mesoscutellum is 1.3 × as long as broad and with a strong circumscutellar carina in F. serranoae. Feron tibiale differs from F. tecturnarum and F. tetyanae in the yellowish to light brown body colour, the frons bulging in frontal view, POL subequal to OOL, the mesoscutum is uniformly reticulate-coriaceous, the center of the mesoscutellar disk coriaceous; radial cell around 4.8 × as long as broad, while the other two species are reddish brown to dark brown, the frons is not bulging, POL at least 1.4 × as long as OOL, the mesoscutum alutaceous to reticulate, the center of the mesoscutellar disk is smooth or finely rugose, and the radial cell measures around 3.7 × as long as broad. Re-description. Asexual female (Figs 429 – 439, 441 – 452, 453 – 463). Body, including mouthparts, legs uniformly light brown; antennae light brown, darker from F 7 or F 8. Head transverse, 1.2 × as broad as high in frontal view, with sparse setae, denser on lower face; 2.1 × as broad as long in dorsal view; head narrower than mesosoma in frontal view. Gena alutaceous, broadened behind eye in frontal view, as broad as transverse diameter of eye in lateral view. Malar space alutaceous, with a few delicate striae radiating from clypeus and not reaching eye; eye 2.0 × as high as length of malar space. Inner margins of eyes parallel. POL 1.9 × as long as OOL, OOL 1.9 × as long as diameter of lateral ocellus and 2.0 × as long as LOL, all ocelli black, ovate, of same size. Transfacial distance 1.3 × as long as height of eye; torulus located slightly above mid height of eye, frons shorter than height of lower face, diameter of antennal torulus 1.2 × as long as distance between them, distance between torulus and eye 1.2 × as long as diameter of torulus; lower face delicately coriaceous, with dense white setae; slightly elevated median area delicately coriaceous, with a few setae. Clypeus slightly broader than high, alutaceous, with sparse long setae, especially along ventral edge; ventrally rounded, not emarginate and without median incision; anterior tentorial pit rounded, distinct, epistomal sulcus distinct, clypeo-pleurostomal line well impressed. Frons delicately coriaceous to reticulate, without striae and with a few setae, small triangular area under central ocellus smooth, glabrous; areas between toruli and between torulus and eye delicately coriaceous; interocellar area delicately coriaceous to reticulate. Vertex, occiput, postgena delicately coriaceous to reticulate, with white long setae; postocciput delicately coriaceous to reticulate, with delicate indistinct concentric lines around occipital foramen and postgenal bridge; posterior tentorial pit large, elongate, area below impressed, glabrous; occipital foramen slightly shorter than height of postgenal bridge; hypostomal carina emarginate, continuing into postgenal sulcus; postgenal sulcus bent strongly outwards, reaching posterior tentorial pit and postgenal bridge unusually broad. Antenna slightly longer than head + mesosoma, with 12 flagellomeres, pedicel slightly longer than broad; F 1 2.1 × as long as pedicel and 1.2 × as long as F 2; F 2 slightly longer than F 3, F 4 = F 5, F 6 slightly longer than F 7, F 8 = F 9 = F 10 = F 11, F 12 slightly longer than F 11; placodeal sensilla indistinct, visible on F 5 – F 12. Mesosoma slightly longer than high, with sparse white setae, denser on lateral propodeal area. Pronotum smooth, with sparse setae, with delicate parallel concentric striae laterally; propleuron smooth, with sparse setae. Mesoscutum uniformly reticulato-coriaceous, with sparse white setae between notauli anteriorly and along notauli, slightly longer than broad (greatest width measured across mesoscutum level with base of tegulae). Notaulus complete, distinctly impressed on all length, with smooth, glabrous bottom; anterior parallel line indistinct, in the form of a bare, smooth stripe, extending to 1 / 3 length of mesoscutum; parapsidal line distinct, marked with broad impressed smooth glabrous stripes; median mesoscutal line absent; parascutal carina narrow, reaching notaulus. Mesoscutellum trapezoid, slightly longer than broad; center of disk of mesoscutellum coriaceous, dull rugose laterally and posteriorly, overhanging metanotum, with a few setae. Mesoscutellar foveae semiquandrangular, broader than high, with smooth, glabrous bottom, usually divided by an incomplete triangular coriaceous elevated area (in some specimens hardly traceable), rarely complete. Mesopleuron mainly smooth, glabrous, sometimes with delicate parallel longitudinal striae in anterodorsal part, with setae along ventral edge; mesopleural triangle smooth, with short white setae; dorsal and lateral axillar areas smooth, with dense white setae; subaxillular bar smooth, glabrous, triangular, as high as height of metanotal trough; metapleural sulcus reaching mesopleuron at half of its height, upper part of sulcus distinct, lower part of sulcus separating a smooth glabrous densely pubescent area. Metascutellum smooth, slightly higher than height of smooth, glabrous ventral impressed area; metanotal trough smooth, with dense setae; central propodeal area lyre-shaped, smooth, glabrous, with irregular interrupted rugae at the base; lateral propodeal carinae strong, bent outwards in posterior 1 / 3; lateral propodeal area smooth, with long dense white setae on piliferous points. Nucha with net of irregular rugae, with few distinct parallel longitudinal sulci laterally. Tarsal claws with basal lobe. Fore wing longer than body, hyaline, with short dense cilia on margin, veins light brown, radial cell open, 4.8 × as long as broad; R 1 and Rs not reaching wing margin; areolet small, triangular, closed, delimited with indistinct veins, Rs + M visible on 3 / 4 of distance between areolet and basalis, its projection reaching basalis at its half height. Metasoma slightly longer than head + mesosoma, higher than long in lateral view; 2 nd metasomal tergum extending to more than half of metasoma length in dorsal view, with short white setae anterolaterally, without micropunctures; subsequent terga and hypopygium smooth, glabrous, with indistinct micropunctures; prominent part of ventral spine of hypopygium 5.7 × as long as broad in ventral view, with a few short setae ventrally. Body length 0.9 – 2.6 mm (n = 12). Gall (Fig. 440). Individual galls swollen, cylindrical, flaring at the broadened tip, covered with more or less crystalline processes, with a few broad filaments (chiefly at the base of each gall), with almost all of the fibers fine, hair-like. Galls clustered, forming a more or less solid and tangled mass up to 27 mm in diameter and 13 mm high. Purple rose and light brown when young, becoming light straw brown to russet, rosy brown, or dark brown with age (Kinsey 1937).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF41FF72FF8AA2E0FE2FFD18.taxon	biology_ecology	Biology. Only the asexual generation is known, which induces galls on section Quercus, subsection Leucomexicana oaks: Q. arizonica, Q. chihuahuensis, Q. deserticola (= Q. texcocana) according to Kinsey (1937); adults emerge mainly during January-February (Kinsey 1937). Quercus glabrescens, Q. glaucoides, Q. obtusata, and Q. rugosa are new host records for this study. Two species described by Kinsey (1937), F. tostum and F. uterinum, are morphologically consistent with the series of specimens that Kinsey called F. tibiale. They simply represent geographical variants of that species and hence we synonymise the names in this study. The conspecific status of the two morphological variants within this species (one with a smooth mesopleuron, the other having a mesopleuron with a transverse reticulated-carinated band) was confirmed using DNA sequence data. One individual from each of the two morphotypes was sequenced for cytb and ITS 2; both individuals had identical sequences for both genes (GenBank accessions OQ 446186, OQ 446241, OQ 448247 – OQ 448248).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF41FF72FF8AA2E0FE2FFD18.taxon	distribution	Distribution. Mexico: Mexico City, Chihuahua, Durango, Querétaro (Kinsey 1937); also from the State of Mexico in this study.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF59FF7EFF8AA4D5FD85FB74.taxon	description	Figs 464 – 475	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF59FF7EFF8AA4D5FD85FB74.taxon	materials_examined	Types examined. HOLOTYPE: Asexual female “ Sequioa Nat. Park, Cal. ”, “ Cut out Nov. 10 ”, “ Q. garryana ”, “ 1785 ”, red label “ Type No. 27201 USNM ”, “ Xanthoteras tubifaciens Weld ” deposited in USNM, examined by GM. Specimen data and images available at http: // n 2 t. net / ark: / 65665 / 3 fffef 724 - e 7 dc- 45 df-af 95 - 997079719085. Weld (1926) designated 39 paratypes which are deposited in different institutions all over the USA (not examined by the authors). Additional material. 48 asexual females “ USA, CA, Berry summit, Arcata, CA 4; galltype 150, ex Q. garryana, coll. 2007.11.04., leg. J. A. Nicholls ”.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF59FF7EFF8AA4D5FD85FB74.taxon	diagnosis	Diagnosis. This is the only Feron species with a uniformly imbricate frons and the clypeus with short interrupted delicate transverse striae. Asexual females belong to the Feron species group characterised by having the pronotum laterally with longitudinal carinae and the mesoscutum alutaceous to coriaceous, rugose-reticulate or reticulate, with piliferous points; as also occurs in F. discularis (asex) and F. kingi (asex). Differs from F. discularis in the body colour, which is never black; the frons is not bulging in frontal view, ocelli are not elevated above the head; toruli are located in the upper half of the head; the median mesoscutal line absent. The most similar species is F. kingi but differs from it in colour, the gena is not broadened behind the eye in frontal view and the fore wing is only slightly longer than length of the body; for other characters see couplet 29 in the key. Re-description. Asexual female (Figs 464 – 474). Head, antennae, metasoma dark brown to black, mesosoma reddish brown with some darker tints; mouthparts and legs reddish brown. Head transverse, alutaceous, with dense white setae all over, except frons and vertex with sparse setae; rounded, 1.2 × as broad as high and slightly broader than mesosoma in frontal view; 1.9 × as broad as long from dorsal view. Gena alutaceous, not broadened behind eye in frontal view, narrower than transverse diameter of eye in lateral view. Malar space alutaceous, glabrous, with a few striae radiating from clypeus, malar sulcus absent; eye 1.9 × as high as length of malar space. Inner margins of eyes parallel. POL 1.3 × as long as OOL, OOL 3.0 × as long as diameter of lateral ocellus and 1.3 × as long as LOL, all ocelli slightly ovate, of same size. Transfacial distance 1.6 × as long as height of eye; diameter of antennal torulus as long as distance between them, distance between torulus and eye 1.4 × as long as diameter of torulus; lower face smooth to delicately alutaceous, with dense white setae, without striae; elevated median area alutaceous, with narrow elevated keel running from clypeus towards base of toruli. Clypeus rectangular, nearly 2.0 × as broad as high, impressed, with short interrupted numerous transverse striae; ventrally rounded, not emarginate, with long setae and without median incision; anterior tentorial pit large, rounded, distinct, epistomal sulcus distinct, clypeo-pleurostomal line well impressed. Frons uniformly imbricate, without striae and setae, interocellar area alutaceous. Vertex, occiput alutaceous; postocciput with numerous short delicate transverse interrupted striae; postgena alutaceous, with dense setae; posterior tentorial pit large, elongated, area below impressed; occipital foramen as high as height of postgenal bridge; hypostomal carina emarginate, continuing into postgenal sulci which diverge strongly toward occipital foramen, postgenal bridge anteriorly broader than occipital foramen. Antenna longer than head + mesosoma, with 12 flagellomeres, pedicel slightly longer than broad; F 1 2.0 × as long as pedicel and 1.1 x as long as F 2; F 2 1.2 × as long as F 3; F 3 = F 4, F 5 1.1 × as long as F 6, subsequent flagellomeres nearly equal in length, F 12 = F 11; placodeal sensilla on F 5 – F 12. Mesosoma nearly as long as high, with sparse white setae, except dense setae on lateral propodeal area. Pronotum smooth, with sparse setae, with numerous parallel delicate striae laterally; propleuron smooth, glabrous. Mesoscutum alutaceous, with some smooth areas, with sparse white setae and distinct piliferous points, slightly longer than broad (greatest width measured across mesoscutum level with base of tegulae). Notaulus complete, deep, bottom smooth, posteriorly broader and converging; at posterior end the distance between notauli shorter than distance between notaulus and side of mesoscutum; anterior parallel line invisible; parapsidal line distinct, marked with broad slightly impressed line; median mesoscutal line absent; parascutal carina broad, reaching notaulus. Mesoscutellum ovate, slightly longer than broad; disk of mesoscutellum alutaceous, glabrous, dull rugose laterally and posteriorly, overhanging metanotum, with dense long setae. Mesoscutellar foveae ovate, with smooth, glabrous bottom, divided by a narrow rugose elevated median area. Mesopleuron entirely smooth, with setae in posteroventral and anteroventral parts; most posterodorsal part with striae; mesopleural triangle smooth, with some longitudinal striae and a few setae; dorsal and lateral axillar areas smooth, with dense white setae; subaxillular bar smooth, glabrous, triangulate, posteriorly higher than height of metanotal trough; metapleural sulcus reaching mesopleuron in upper 1 / 3 of its height, upper part of sulcus indistinct, sulcus separating smooth, glabrous area, with some setae in lower part. Metascutellum delicately coriaceous, as high as height of smooth, glabrous ventral impressed area; metanotal trough smooth, with some setae; central propodeal area lyre-shaped, smooth, glabrous, with very short rugae in the most posterior part; lateral propodeal carinae distinct, bent outwards in posterior 1 / 3; lateral propodeal area smooth, with long dense white setae. Nucha with delicate sulci dorsally and laterally. Tarsal claws with basal lobe. Fore wing slightly longer than length of body but shorter and narrower than typically-sized wings in Feron. Fore wing hyaline, with distinct dense cilia on margin, veins light brown, radial cell open, 4.0 × as long as broad; R 1 and Rs reaching wing margin and slightly projected; areolet small, indistinct. Rs + M narrow, inconspicuous, visible on 2 / 3 length between areolet and basalis; its projection reaching basalis at half height. Metasoma as long as head + mesosoma, higher than long in lateral view; 2 nd metasomal tergum extending to half-length of metasoma in dorsal view, with patch of dense white setae anterolaterally, without micropunctures; subsequent terga and hypopygium smooth, glabrous, without micropunctures. Prominent part of ventral spine of hypopygium 5.0 × as long as broad in ventral view, with white setae ventrally. Body length 1.5 – 2.35 mm (n = 100) (Weld 1926). Gall (Fig. 475). Convex mass of tubular galls standing side by side in a compact cluster on the underside of the leaf. The mass measures up to 25 mm long by 15 mm wide. The individual galls are easily detached, white or creamcoloured, up to 9 mm long, tapering gradually from the base to a diameter of about 3 mm at the distal open end, the distal portion covered with tapering spines which are often rosy at the tip. The single larval cell lies midway along the length of the gall and measures about 2 mm long by 1.2 mm in diameter (Weld 1926).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF59FF7EFF8AA4D5FD85FB74.taxon	biology_ecology	Biology. Only the asexual generation is known, inducing galls on Q. garryana (section Quercus, subsection Dumosae) (Weld 1926, Burks 1979). Galls mature in October-November.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF59FF7EFF8AA4D5FD85FB74.taxon	distribution	Distribution. USA: California.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF55FF7BFF8AA684FF77F87E.taxon	description	Figs 476 – 488	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF55FF7BFF8AA684FF77F87E.taxon	materials_examined	Types examined. HOLOTYPE: Asexual female “ Rio Verde 14 mi S. L. P. 6500 ’, Mex. Gall 12.4.31, 63 fms. 5 - 12 - 32 ”, “ Q. macrophylla, Kinsey coll. ”, red “ Xyst. verutum, Holo- Paratype ”. PARATYPES (4 asexual females) with the same labels as the holotype. Holotypes and paratypes deposited at the AMNH were examined by GM. In the general collections of the AMNH a large number of paratypes are also deposited. Additional material. 2 asexual females “ MEX- 421, Mexico, Ciudad de Mexico, Santa Fe, ex Q. rugosa, (16. i. 2018) 17 - 31. i. 2018, 2 females, leg. D. Cibrián-Tovar & U. Barrera-Ruíz ”.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF55FF7BFF8AA684FF77F87E.taxon	diagnosis	Diagnosis. Asexual females belong to the group of Feron species in which the body is never black; the head is quadrangular or ovate in frontal view, with ocelli elevated above the frons; inner margins of eyes parallel or very slightly converging ventrally; the transfacial distance is equal to or longer than height of eye; toruli are located above the mid-height of eyes; the eye is less than 3.0 × as high as the length of malar space; lateral ocelli are large, OOL subequal or at most 1.7 × as long as the diameter of ocellus; the pronotum laterally with longitudinal carinae; the mesoscutum alutaceous to coriaceous, rugose-reticulate, reticulate, without piliferous points; as in F. splendens (asex) and F. vitreum (asex). Differs from F. vitreum in the F 1 being subequal or slightly longer than scape + pedicel; the transfacial distance is longer than the height of eye. Differs from F. splendens in that the mesoscutum without striae in anterior part between notauli, anterior parallel lines as a bare smooth stripe, mesoscutellar foveae are separated by a thin carina, posteriorly not delimited by a carina.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF55FF7BFF8AA684FF77F87E.taxon	description	Re-description. Asexual female (Figs 476 – 487). Body, including mouthparts, antennae, legs uniformly light brown. Head quadrangular, 1.2 × as broad as high in frontal view, with sparse setae; 2.1 × as broad as long in dorsal view; head narrower than mesosoma in frontal view. Gena alutaceous, not broadened behind eye and with parallel sides in frontal view, narrower than transverse diameter of eye in lateral view in ventral part. Malar space alutaceous, with a few delicate striae radiating from clypeus and not reaching eye; eye 2.6 – 3.0 × as high as length of malar space. Inner margins of eyes parallel. POL 1.5 – 2.7 × as long as OOL, OOL slightly shorter than diameter of lateral ocellus and slightly longer than LOL, all ocelli ovate, of same size. Transfacial distance slightly longer than height of eye; torulus located above mid height of eye, frons shorter than height of lower face, diameter of antennal torulus 1.4 x as long as distance between them, distance between torulus and eye equal to diameter of torulus; lower face delicately coriaceous, with white setae; slightly elevated median area, delicately coriaceous, with a few setae. Clypeus rectangular, more than 2.0 × as broad as high, alutaceous, glabrous, without setae along ventral edge; ventrally straight, not emarginate and without median incision; anterior tentorial pit rounded, distinct, epistomal sulcus distinct, clypeo-pleurostomal line well impressed. Frons coriaceous, without striae and with a few setae, small triangular area under central ocellus coriaceous; areas between toruli and between torulus and eye delicately coriaceous; interocellar area coriaceous. Vertex, occiput, postgena, postocciput smooth, with sparse white long setae; postgena with parallel concentric black stripes; posterior tentorial pit large, elongate, area below impressed, glabrous; occipital foramen as high as height of postgenal bridge; hypostomal carina emarginate, continuing into postgenal sulcus; postgenal sulcus bent strongly outwards, reaching posterior tentorial pit; postgenal bridge broad, as high as occipital foramen. Antenna slightly longer than head + mesosoma, with 12 flagellomeres, pedicel longer than broad; F 1 2.2 × as long as pedicel, slightly longer than scape + pecidel and slightly longer than F 2; F 2 = F 3, F 4 shorter than F 3 and slightly longer than F 5, F 6 longer than F 7, F 8 = F 9, F 9 slightly longer than F 10, F 10 = F 11 = F 12; placodeal sensilla indistinct, visible on F 4 – F 12. Mesosoma slightly longer than high, with sparse white setae, denser along anterolateral edge of pronotum and on lateral propodeal area. Pronotum smooth, with sparse setae, with delicate parallel concentric striae laterally; propleuron smooth, with sparse long white setae. Mesoscutum delicately coriaceous, smooth, glabrous in between notauli in posterior half, longer than broad (greatest width measured across mesoscutum level with base of tegulae), with sparse white setae in anterior 1 / 3 of mesoscutum length. Notaulus complete, distinctly impressed on entire length, with smooth, glabrous bottom; at posterior end the distance between notauli only just larger than width of notaulus on its posterior margin; anterior parallel line in the form of a bare, smooth stripe, extending to 1 / 3 length of mesoscutum; parapsidal line marked with broad smooth glabrous stripes; median mesoscutal line absent; parascutal carina narrow, reaching notaulus. Mesoscutellum trapezoid, longer than broad; disk of mesoscutellum uniformly dull rugose, overhanging metanotum, with a few scattered setae. Mesoscutellar foveae semiquadrangular, slightly broader than high, with smooth, glabrous bottom, divided by distinct narrow central carina. Mesopleuron entirely smooth, glabrous, with setae in anteroventral part; mesopleural triangle smooth, with dense short white setae; dorsal and lateral axillar areas smooth, with dense white setae; subaxillular bar smooth, glabrous, triangular, as high as height of metanotal trough; metapleural sulcus reaching mesopleuron at half of its height, upper part of sulcus distinct, lower part of sulcus separating delicately coriaceous area, with a few setae. Metascutellum smooth, glabrous with delicate longitudinal parallel striae, taller than height of smooth, glabrous ventral impressed area; metanotal trough smooth, with sparse white setae; central propodeal area lyre-shaped, smooth, glabrous; lateral propodeal carinae strong, bent outwards in posterior 1 / 3; lateral propodeal area smooth, with long dense white setae on piliferous points. Nucha without sulci dorsally, with sulci only laterally. Tarsal claws with basal lobe. Fore wing longer than body, hyaline, with short dense cilia on margin, veins brown, radial cell open, 4.8 × as long as broad; R 1 and Rs not reaching wing margin; areolet indistinct, Rs + M distinct along 1 / 2 of distance between areolet and basalis, its projection reaching basalis at half of its height. Metasoma longer than head + mesosoma, slightly higher than long in lateral view; 2 nd metasomal tergum extending to 2 / 3 of metasoma length in dorsal view, with numerous white setae anterolaterally, without micropunctures; subsequent terga and hypopygium smooth, glabrous, without micropunctures; prominent part of ventral spine of hypopygium 5.7 × as long as broad in ventral view, with few short setae ventrally. Body length 1.6 – 2.8 mm (n = 3). Gall (Fig. 488). Individual galls long and slender, uniformly cylindric or flaring at the top, more or less covered with distinctly crystalline processes all of which are broad and blunt, filamentous, not fine nor hairlike. The whole cluster forming a spiny mass in which the individual galls are still prominent, the clusters up to 30 mm in diameter and 12 mm high. Bright purple rose and straw colour when fresh, darkening with age (Kinsey 1937).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF55FF7BFF8AA684FF77F87E.taxon	biology_ecology	Biology. Only the asexual generation is known, which induces galls on section Quercus, subsection Leucomexicana oaks: Q. magnoliifolia, and Q. rugosa (Kinsey 1937). Fresh mature galls in January, adults emerge in April (Kinsey 1937). The type material is labelled as collected from Q. macrophylla, but Kinsey did not define the authorship of the host species. Two possible hosts coexist within the distribution of F. verutum: Q. magnoliifolia (= macrophylla Née), or Q. resinosa (= macrophylla sensu Trel.).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF55FF7BFF8AA684FF77F87E.taxon	distribution	Distribution. Mexico: San Luis Potosi, Guanajuato (Kinsey 1937); also from Ciudad de Mexico state in this study.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF51FF43FF8AA56EFC24F83B.taxon	description	Figs 489 – 513	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF51FF43FF8AA56EFC24F83B.taxon	materials_examined	Types examined. For Feron vitreum: HOLOTYPE: Asexual female “ Mex (City) D. F. 9200 ’, Mex. Gall 1.12.32, 100 fms. 3.10.32 ”, “ Q. rhodophlebia, Kinsey coll. ”, red “ Xyst. vitreum, Holo- Paratype ”. PARATYPES (4 asexual females) with the same labels as the holotype. For Feron validum: HOLOTYPE: Asexual female “ Cuernavaca Mor 8700 ’, Mex. Gall 1 - 7 - 32, 41 fms. 4 - 10 - 32 ”, “ Q. texcocana, Kinsey coll. ”, red “ Xyst. validum, Holo- Paratype ”. Holotypes and 4 paratype asexual females with the same labels as the holotype, deposited in the AMNH were examined by GM. In the general collection of AMNH a large number of paratypes are also deposited. Additional material. 28 asexual females: “ MEX- 326, Mexico, Morelos, Coajomulco, ex Q. rugosa, (04. x. 2016) 15 - 30. iv. 2017: 27 females, leg. E. Castillo ”; “ MEX- 421, Mexico, Ciudad de Mexico, Santa Fe, ex Q. rugosa, (16. i. 2018) 17 - 31. i. 2018: 1 female, leg. D. Cibrián-Tovar & U. Barrera-Ruíz ”.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF51FF43FF8AA56EFC24F83B.taxon	diagnosis	Diagnosis. Asexual females belong to the group of Feron species without a black body; the head is quadrangular or ovate in frontal view, with ocelli elevated above the frons; inner margins of eyes parallel or very slightly converging ventrally; the transfacial distance is equal to or longer than the height of the eye; toruli are located above the mid-height of eyes; the eye is less than 3.0 × as high as the length of malar space; lateral ocelli are large, OOL subequal or maximum 1.7 × as long as the diameter of ocellus; the pronotum laterally with longitudinal carinae; the mesoscutum alutaceous to coriaceous, rugose-reticulate, reticulate, without piliferous points; as in F. splendens (asex) and F. verutum (asex). Feron vitreum differs from these two species in having the F 1 distinctly longer than scape + pedicel and the transfacial distance being equal to or slightly shorter than the height of the eye.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF51FF43FF8AA56EFC24F83B.taxon	description	Re-description. Asexual female (Figs 489 – 500, 502 – 513). Body, including mouthparts, antenna, legs uniformly light brown; antenna from F 5 dark brown. Head quadrangular, 1.1 × as broad as high in frontal view, with sparse setae; 2.1 × as broad as long in dorsal view; head narrower than mesosoma in frontal view. Gena alutaceous, not broadened behind eye and with parallel sides in frontal view, narrower than transverse diameter of eye at ventral end in lateral view. Malar space alutaceous, with a few delicate striae radiating from clypeus but not reaching eye; eye 2.4 × as high as length of malar space. Inner margins of eyes parallel. POL 2.5 × as long as OOL, OOL slightly shorter than diameter of lateral ocellus and LOL slightly longer than OOL, all ocelli ovate, of same size. Transfacial distance slightly shorter than height of eye; torulus located above mid height of eye, frons shorter than height of lower face, diameter of antennal torulus 1.2 × as long as distance between them, distance between torulus and eye slightly shorter than diameter of torulus; lower face delicately coriaceous with white setae; slightly elevated median area delicately coriaceous with a few setae. Clypeus rectangular, broader than high, alutaceous, glabrous, with setae along ventral edge; ventrally straight, not emarginate and without median incision; anterior tentorial pit rounded, distinct, epistomal sulcus distinct, clypeo-pleurostomal line well impressed. Frons coriaceous, without striae and with a few setae, small triangular area under central ocellus coriaceous; areas between toruli and between torulus and eye delicately coriaceous; interocellar area coriaceous. Vertex, occiput, postgena, smooth, with sparse white long setae; postocciput smooth, with concentric lines around occipital foramen and postgenal bridge; posterior tentorial pit large, elongate, area below impressed, glabrous; occipital foramen as high as height of postgenal bridge; hypostomal carina emarginate, continuing into postgenal sulcus; postgenal sulcus bent strongly outwards, reaching posterior tentorial pit; postgenal bridge unusually broad. Antenna slightly longer than head + mesosoma, with 12 flagellomeres, pedicel longer than broad; F 1 2.4 × as long as pedicel, much longer than scape + pedicel and 1.2 × as long as F 2; F 2 nearly equal to F 3, F 3 = F 4 = F 5, F 6 slightly longer than F 7, F 8 slightly longer than F 9, F 9 = F 10, F 10 = F 11, F 12 shorter than F 11; placodeal sensilla indistinct, visible on F 4 – F 12. Mesosoma slightly longer than high, with sparse white setae, with denser setae on lateral propodeal area. Pronotum smooth, with sparse setae, with delicate parallel concentric striae laterally; propleuron smooth, with sparse long white setae. Mesoscutum delicately coriaceous, smooth, glabrous in between posterior half of notauli, longer than broad (greatest width measured across mesoscutum level with base of tegulae), with sparse white setae in anterior 1 / 3 of mesoscutum length. Notaulus complete, distinctly impressed along entire length, with smooth, glabrous bottom, converging strongly posteriorly with a short distance between notauli posteriorly; anterior parallel line in the form of a bare, smooth stripe, extending to 1 / 3 length of mesoscutum; parapsidal line distinct, marked with broad smooth glabrous stripes; median mesoscutal line absent; parascutal carina narrow, reaching notaulus. Mesoscutellum trapezoid, longer than broad; disk of mesoscutellum uniformly dull rugose, overhanging metanotum, with a few scattered setae. Mesoscutellar foveae ovate, slightly longer than high, with smooth, glabrous bottom, divided by broad elevated smooth triangular area. Mesopleuron entirely smooth, glabrous, with setae in anteroventral part; mesopleural triangle smooth, with numerous short white setae; dorsal and lateral axillar areas smooth, with dense white setae; subaxillular bar smooth, glabrous, triangular, as high as height of metanotal trough; metapleural sulcus reaching mesopleuron at half of its height, upper part of sulcus indistinct, invisible, lower part of sulcus separating smooth area, with dense setae. Metascutellum smooth, glabrous with delicate longitudinal parallel striae, higher than height of smooth, glabrous ventral impressed area; metanotal trough smooth with dense setae; central propodeal area lyre-shaped, smooth, glabrous, with a few short parallel striae in posterolateral part; lateral propodeal carinae strong, bent outwards in posterior 1 / 3; lateral propodeal area smooth, with long dense white setae. Nucha without sulci dorsally, with sulci only laterally. Tarsal claws with basal lobe. Fore wing longer than body, hyaline, with short dense cilia on margin, veins brown, radial cell open, 4.8 × as long as broad; R 1 and Rs not reaching wing margin; areolet indistinct, Rs + M distinct along half of distance between areolet and basalis, its projection reaching basalis at half of its height. Metasoma longer than head + mesosoma, longer than high in lateral view; 2 nd metasomal tergum extending to 4 / 5 of metasoma length in dorsal view, with numerous white setae anterolaterally, without micropunctures; subsequent terga and hypopygium smooth, glabrous, without micropunctures; prominent part of ventral spine of hypopygium 4.1 × as long as broad in ventral view, with a few short setae ventrally. Body length 1.2 – 2.8 mm (n = 10). Gall (Fig. 501). Individual galls long and slender, uniformly cylindrical or flaring at the top, fairly well covered with distinctly crystalline processes all of which are broad and blunt, filamentous, none of which are fine or hair-like. Galls clustered, forming a spiny mass in which the individual galls are quite prominent, the clusters up to 55 mm in diameter and 17 mm high. Bright purple rose and straw colour when fresh, darkening with age (Kinsey 1937).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF51FF43FF8AA56EFC24F83B.taxon	biology_ecology	Biology. Only the asexual generation is known, which induces galls in October-January, on section Quercus, subsection Leucomexicana oaks: Q. deserticola Trel. (= Q. texcocana Trel.), and Q. rugosa (= Q. rhodophlebia), adults emerge in April. Kinsey (1937) described another species, F. validum, which we consider is morphologically consistent with Kinsey’s series of specimens of F. vitreum and simply represents a geographical variant of that species; hence we synonymise the name in this study.	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
1662613EFF51FF43FF8AA56EFC24F83B.taxon	distribution	Distribution. Mexico: Luis Potosi, Guanajuato (Kinsey 1937).	en	Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N., Pujade-Villar, Juli (2023): Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species. Zootaxa 5366 (1): 1-174, DOI: 10.11646/zootaxa.5366.1.1, URL: https://www.mapress.com/zt/article/download/zootaxa.5366.1.1/52221
