taxonID	type	description	language	source
264F87F78B56875A4FC60AE1FD6DF853.taxon	description	Description. Head, in profile, weakly (<45 °) to strongly (45 – 90 °) inclined from longitudinal body axis. Vertex subtrapezoidal (Fig. 2 A, C, D, E) to trapezoidal (Fig. 2 B) with indented foveae, anteriorly produced into transverse tubercle (Fig. 2 C) or lobe (Fig. 2 A, B, D. E) on either side of mid-line, with flat to raised hind margin around lateral ocelli; covered with microscopical to long setae. Genal processes conical, slender (Fig. 2 A, C, D) to swollen (Fig. 2 B, E), pointed to slightly blunt apically; 0.2 – 1.1 times as long as vertex; covered with short to long setae. Antenna 10 - segmented; 0.8 – 2.1 times as long as head width; with a subapical rhinarium on each of segments 4, 6, 8 and 9; segment 10 usually with a pair of subequal terminal setae. Clypeus heart-shaped, weakly protruding in profile. Rostrum relatively short (rarely long); median and distal labium segments 0.1 – 0.5 (rarely 0.6 – 0.7) times as long as head width; median segment 1.1 – 3.4 times longer than distal segment. Pronotum lacking tubercles, or with one to three tubercles on either side. Propleurites longer than their width; episternum and epimeron subequal. Forewing (Fig. 3) membrane colourless or whitish to bright yellow (rarely brown to black), often becoming darker towards apex, with or without pattern; if pattern absent, membrane (Fig. 3 A) often fumose in the middle of cells in apical part and with brown patch along vein Cu 1 b; if present, pattern (Fig. 3 D – E) consists of pale to dark brown stripes and / or dots. Forewing oval, oblong-oval (Fig. 3 A), oviform (Fig. 3 B, C) to rhomboidal (Fig. 3 D, E), widest in the middle (Fig. 3 B, C) or in apical third (Fig. 3 A, D – E), narrowly or broadly rounded apically; forewing length 2.0 – 2.9 times as long as its width; veins with short (rarely long) microscopical setae in comparison with vein width, more densely spaced towards wing base. Vein C + Sc of forewing weakly (Fig. 3 A, B) to strongly (Fig. 3 C – E) curved; pterostigma long (rarely short); vein Rs relatively straight, weakly sinuous (Fig. 3 A – C) or strongly curved to fore margin apically (Fig. 3 D, E); vein M longer, shorter or as long as either of veins M 1 + 2 and M 3 + 4. Forewing surface spinules often present in all cells, weakly to strongly developed, sometimes with radular spinules covering triangular (rarely rounded) areas along the margin of cells r 2, m 1, m 2 and cu 1; sometimes surface spinules absent in apical third of the wing but base of cell cu 2 and area between clavus and vein A always covered with fine surface spinules. Meracanthus of metacoxae long, spur-shaped; metatibia 0.4 – 0.9 times as long as head width, without basal spine, with a crown of ungrouped or indistinctly grouped 4 – 9 apical spurs. Basal metatarsal segment without black spurs. Terminalia. Male (Figs 4 – 6). Subgenital plate relatively short, elongate to subglobular; covered with short to long setae except for base, rarely with a row of bristles along dorsal margin. Proctiger tubular, barrel-shaped or irregularly subtrapezoidal; straight to weakly produced posteriorly, widest in its middle or in basal third, rarely strongly produced posteriorly and widest in apical third; covered with short to long setae except for base. Paramere oblong-oval (Fig. 4 B), shortly (Fig. 5 E), narrowly (Figs 4 C, D, 5 B, D, F, I) or broadly (Figs 4 E, 5 G, H) lamellar, or irregularly subtrapezoidal (Fig. 5 A, C); always with short to long hook-shaped (Figs 4 E, 5 A – C, F – I), recurved (Figs 4 B, C, 5 D, E), or finger-shaped (Fig. 4 D) apico-anterior process which is on pedicel (Figs 4 B – D, 5 A – E, G, I) or lacking pedicel (Figs 4 E, 5 F, H); with sclerotized tooth (rarely absent) situated apically or at base of the lobe, or apically sclerotized median ridge; sometimes with short to long median hump (Fig. 5 A, C, H, I), and weakly (Figs 4 B, E, 5 B, C, F, G, H, I) to strongly (Figs 4 C, D, 5 A, D, E) bulged apico-posterior lobe; process usually situated at the same level with lobe, rarely interiorly towards lobe (Figs 4 B, 5 B, E); outer face covered with short to long setae mostly in apical half; inner face covered with short to long setae. Distal segment of aedeagus elongate to massive, weakly to strongly expanding towards apex; with short beak-like (Fig. 6 C), long relatively straight (Fig. 6 A, E – H) or hook-shaped (Fig. 6 D) anterior process; if process absent, distal segment rounded (Fig. 6 B) or angular (Fig. 6 I) apically, weakly to strongly inflated anteriorly; with one horn-shaped apico-posterior tubercle (Fig. 6 C) to two tubercles of different size, shape and position (Fig. 6 A, D – H), sometimes tubercles absent (Fig. 6 B, I); lateral lobes always present, short to long, dilated towards apex (Fig. 6 B), or large, triangular, dilated towards apex which is rounded or concave (Fig. 6 A, C – H), or tubular with subparallel sides (Fig. 6 I), apical margin frayed or entire. — Female (Fig. 7). Terminalia relatively short, rarely long; proctiger usually 1.5 – 2.8 times longer than subgenital plate (rarely 1.0 – 1.4). Proctiger cuneate (Fig. 7 A, D, E) to subglobular (Fig. 7 C), pointed to subacute apically; dorsal margin, in profile, almost straight (Fig. 7 A, D) to strongly bent downwards (Fig. 7 C), sometimes with subapical indentation (Fig. 7 E); covered with short to long setae except for base, usually with long setae along circumanal ring and in median part. Circumanal ring (Fig. 7 B) consisting of two unequal rows of pores, outer pores generally round and inner pores long, narrow. Subgenital plate cuneate (Fig. 7 A, D) to globular (Fig. 7 C, E); rounded apically (Fig. 7 C), or with tiny to very long apical process (Fig. 7 A, D, E); covered with short to long setae except for base and usually with long setae along ventral margin; often with a row of thick bristles along dorsal margin. Dorsal and ventral valvulae straight, subacute apically; lateral valvulae narrowly rounded apically.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B56875A4FC60AE1FD6DF853.taxon	discussion	Comments. At present Russelliana comprises 19 described species (Tuthill 1959, 1964; Burckhardt 1986, 1987, 2008 a). For six of these species also the immatures have been described: Russelliana bulbosa, capsici, disparilis, marionae, sebastiani and theresae (Burckhardt 1987, 2008 a). Here, we formally describe and name adults of 24 new species, along with a revision of the previously described ones. Due to inaccessability of slide material on Russelliana lycii (Tuthill), its description follows partly Burckhardt (1987). Females of Russelliana chilensis Burckhardt are described here for the first time, as are those of Russelliana adunca Burckhardt. Females attributed to R. adunca (Burckhardt 1987; Serbina et al. 2015) belong to another undescribed species, i. e. Russelliana caunda sp. nov. Additional species are represented in the material at hand but are not described and named here due to insufficient material or its poor state, meaning that more species of this genus are expected to be found and described.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B5987574FC60FAAFE12FE7E.taxon	materials_examined	Material examined. Holotype ♂: Chile: V Region, Province Los Andes, El Juncal, 2200 m, 24. xii. 1998, Asteraceae, alpine scrub with low bushes (D. Burckhardt) # 6 (4) (NHMB, dry). Paratypes: Chile: 2 ♂, 11 ♀, V Region, Province Los Andes, Río Blanco to Portillo, route 60, Aconcagua Valley, 32 ° 50 ' S 70 ° 08 ' W, 2200 – 2400 m, 23. xi. 1992, Nardophyllum cf. lanatum, alpine scrub (D. Burckhardt) # 12 (NHMB, dry); 9 ♀, same but Mulguraea scoparia [Diostea scoparia] (D. Burckhardt) # 12 (NHMB, dry); 11 ♂, 13 ♀, 3 immatures, same but Portillo, 32 ° 50 ' S 70 ° 08 ' W, 2200 m, 31. xii. 1993,? Baccharis sp. (D. Burckhardt) # 44 (MHNG, NHMB, dry); 4 ♂, 4 ♀, same but km 14 Portillo to Río Blanco, 2100 m, 23. xii. 1995, Lycium sp., subalpine scrub (D. Burckhardt) # 19 (4) (MHNG, NHMB, dry); 10 ♂, 10 ♀, 9 immatures, same but km 10 Portillo to Río Blanco, 2300 m, Lycium sp., alpine scrub (D. Burckhardt) # 18 (4) (MHNG, dry, on slide, 70 % ethanol); 26 ♂, 39 ♀, 3 immatures, same as holotype (D. Burckhardt) # 6 (4) (NHMB, dry, on slide, 70 % ethanol); 9 ♂, 13 ♀, 1?, same but Province San Felipe de Aconcagua, km 20 Resguardo de Los Patos to Paso del Rubio, 2200 – 2300 m, 1. i. 1999, Asteraceae, semidesert and subalpine scrub (D. Burckhardt) # 12 (1) (BMNH, NHMB, dry, on slide, 70 % ethanol).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B5987574FC60FAAFE12FE7E.taxon	description	Description. Coloration. Head including genal processes yellow to green-yellow; clypeus black. Eyes yellow to brown, ocelli red. Antenna yellow to brownish, segments 3 – 8 with dark brown apices, segments 9 – 10 entirely dark brown. Pronotum pale yellow; mesopraescutum pale yellow to yellow, sometimes with two distinct yellow to orange patches along the fore margin; mesoscutum pale yellow to yellow, sometimes with distinct four broad and, in the middle, one narrow yellow longitudinal stripes; mesoscutellum pale yellow along the margin, yellow to green-yellow in the middle. Metanotum yellow to green-yellow. Forewing with pale yellow veins and colourless membrane, sometimes yellowish in apical part. Legs yellow to orange, sometimes distal tarsal segments darker, meracanthus of metacoxa yellow. Abdomen yellow to brown, sometimes slightly ligther ventrally; terminalia yellow. Female terminalia with dark apex. Structure. Head, in profile, strongly inclined from longitudinal body axis at 90 °. Vertex subtrapezoidal with indented foveae, anteriorly produced into transverse lobe on either side of mid-line, with slightly raised hind margin around lateral ocelli, covered with microscopical setae; genal processes conical, slender, acute apically, slightly shorter than vertex, covered with moderately long setae. Pronotum with one pronounced lateral and one relatively shallow sublateral tubercles on either side. Forewing oblong-oval, narrowly, evenly rounded apically; vein C + Sc weakly curved, pterostigma long, vein Rs weakly sinuous, slightly curved to fore margin apically; vein M slightly longer than either of veins M 1 + 2 and M 3 + 4; surface spinules faint, present in all cells, leaving narrow spinule-free stripes along the veins, sparsely and irregularly spaced; radular spinules covering triangular areas along the margin of cells r 2, m 1, m 2 and cu 1. Metatibia with 6 – 7 apical spurs. Terminalia. Male. Proctiger tubular; sparsely covered with moderately long setae. Subgenital plate short, subglobular; densely hairy. Paramere narrowly lamellar, irregularly rounded apically; with long hook-shaped apico-anterior process on very short pedicel and lobe with apically sclerotised median tooth; lobe situated exterior to process; outer face covered with moderately long setae mostly in apical half, inner face densely, evenly covered with moderately long setae. Distal segment of aedeagus moderately elongate, weakly expanding towards apex; with short beak-shaped anterior process and one horn-shaped apico-posterior tubercle; lateral lobes moderately long, dilated towards apex which is concave. — Female. Proctiger oblong cuneate, pointed apically; dorsal margin, in profile, almost straight; relatively densely covered with moderately long setae in dorsal part. Subgenital plate cuneate, with short apical process; sparsely covered with moderately long setae, dorsal margin with a row of bristles. Host-plant. Unknown. Adults were collected on Asteraceae:? Baccharis sp., Nardophyllum cf. lanatum (Meyen) Cabrera and an unidentified genus, on Verbenaceae: Mulguraea scoparia (Gillies & Hook.) N. O'Leary & P. Peralta, as well as on Solanaceae: Lycium sp. Immatures were found on? Baccharis sp., Asteraceae indet. and Lycium sp. The material was collected by sweeping and the association with the plants is doubtful. Problematical is also the identification of the plants as several specimens were in poor state. Asteraceae are the most probable hosts. Despite several attempts to find the host in the Río Blanco – Portillo region (1992, 1993, 1995 and 1998) no conclusive results were obtained.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B5987574FC60FAAFE12FE7E.taxon	distribution	Distribution. Chile (V Region). Derivation of name. From Greek αδηλος = hidden, secret, unknown, mysterious, etc. for the uncertain host despite several attempts to find it.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B5987574FC60FAAFE12FE7E.taxon	discussion	Comments. Russelliana adela resembles R. bicolorata, intermedia and xantha, in a paramere bearing a long hook-shaped apico-anterior process which is situated interiorly to the lobe, and in a distal segment of the aedeagus bearing a short beak-shaped anterior process and a horn-shaped apico-posterior tubercle. R. adela differs from the three species in a colourless forewing membrane and an oblong cuneate female proctiger with a relatively straight dorsal margin. R. adela differs from R. bicolorata and xantha in a multicoloured body, from R. bicolorata in a shape of the forewing which is broadest in the apical third, and from R. intermedia in the absence of the median hump of the paramere.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B5887504FC60D22FC8BFB85.taxon	materials_examined	Material examined. Holotype ♂: Chile: IV Region, Province Elqui, 5 – 10 km S Vicuña, 30 ° 05 ' S 70 ° 40 ' W, 750 – 950 m, 5. xii. 1993,? Lycium sp., semidesert (D. Burckhardt) # 11 (MHNG, dry). Paratypes: Chile: 3 ♂, 1 immature, III Region, Province Huasco, 20 km S Vallenar, 28 ° 40 ' S 70 ° 40 ' W, 750 m, 6. xii. 1993, Lycium sp., quebrada (D. Burckhardt) # 15 (MHNG, dry); 9 ♂, 13 ♀, 2 immatures, 1?, IV Region, Province Elqui, along road from Viñita Baja to Condoriaco, 29 ° 45 ' S 70 ° 50 ' W, 1000 – 1400 m, 4. xii. 1993,? Lycium sp., dry slope with Trichocereus and various shrubs (D. Burckhardt) # 7 (BMNH, MHNG, NHMB, dry, on slide); 7 ♂, 4 ♀, same as holotype (D. Burckhardt) # 11 (MHNG, dry); 2 ♂, 3 ♀, same but 15 km E Vicuña, 30 ° 10 ' S 70 ° 40 ' W, 850 m, Solanaceae, river bed with Baccharis and dry slope with small shrubs (D. Burckhardt) # 10 (MHNG, dry); 3 ♂, 2 ♀, 1 immature, same but 15 – 25 km S Vicuña, 30 ° 15 ' S 70 ° 40 ' W, 1300 – 1700 m, 14. xii. 1993, Lycium sp., steppe (D. Burckhardt) # 33 (NHMB, dry); 1 ♀, same but 10 km S Vicuña towards Hurtado, 900 m, 18. xii. 1995, Lycium sp., semidesert with a few scattered Prosopis chilensis trees in quebrada (D. Burckhardt) # 7 (1) (MHNG, dry); 1 ♀, same but ca 45 km ENE La Serena, Viñita Baja to Condoriaco, 800 – 1000 m, 19. xii. 1995, Lycium sp., quebrada and mountain slope (D. Burckhardt) # 10 (3) (MHNG, dry).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B5887504FC60D22FC8BFB85.taxon	description	Description. Coloration. Dimorphic, male slightly darker, general body colour yellow to dark brown; female slightly lighter, general body colour yellow to brown, forewing pattern paler than in males. Head including genal processes yellow to dark brown with yellow to brownish dots, sometimes entirely yellow; clypeus yellow to dark brown. Eyes yellow to brown, ocelli orange to red. Antenna yellow, segments 1 – 2 brownish at base to entirely brown, segments 3 – 8 with dark brown apices, segments 9 – 10 entirely dark brown. Thorax brown with distinct yellow spots. Pronotum yellow to dark brown; mesopraescutum pale to dark brown, sometimes with two orange patches along the fore margin; mesoscutum pale to dark brown with four broad dark orange longitudinal stripes; mesoscutellum pale to dark brown, sometimes pale yellow along the margin. Metanotum yellow to brown. Forewing with yellow to dark brown veins and membrane with distinct pale to dark brown pattern differing in males and females. Male forewing membrane brown to dark brown consisting of large brown band occupying almost entire wing surface stretching from apical part of costal vein and covering apical part of cell r 1, apical and basal part of cell r 2, entire cells m 1, m 2 and cu 1, apical part of cell cu 2 and median part of cell c + sc, leaving light areas in cells r 2, m 1, m 2 and cu 1 along the margin; membrane lacking pattern, colourless to yellowish. Female forewing membrane pale brown consisting of patches scattered over entire surface and dark frequently confluent dots occupying all cells, patch along the margin leaving almost indistinct light areas in cells r 2, m 1, m 2 and cu 1; with few distinct dark brown dots along the margin at the edges of the light areas in cells r 2, m 1, m 2 and cu 1. Legs yellow to brownish with orange to dark brown femora, meracanthus of metacoxa pale to bright yellow. Abdomen with terminalia yellow to brownish, sometimes lighter ventrally. Male proctiger and paramere often dark apically. Female terminalia with dark apex. Structure. Head, in profile, weakly inclined from longitudinal body axis (<45 °). Vertex trapezoidal, flat with indented foveae, anteriorly produced into transverse lobe on either side of mid-line, with slightly raised hind margin around lateral ocelli, covered with short setae; genal processes short, swollen, slightly conical apically, covered with moderately long setae. Pronotum with two pronounced lateral and one relatively shallow sublateral tubercles on either side. Forewing rhomboidal; vein C + Sc strongly, unevenly curved, pterostigma long, vein Rs almost straight, strongly curved to fore margin apically; vein M longer than either of veins M 1 + 2 and M 3 + 4; both male and female forewing with large, very dense surface spinules, present in all cells, leaving no spinule-free stripes along the veins, forming hexagons in apical part on pigmented areas, weakly developed on unpigmented areas; radular spinules not pronounced. Metatibia with 5 – 6 apical spurs. Terminalia. Male. Proctiger barrel-shaped; sparsely covered with moderately long setae in apical two thirds. Subgenital plate elongate; with sparsely spaced long setae restricted to apical half. Paramere shortly lamellar; with long recurved apico-anterior process on pedicel, broadly rounded apico-posterior lobe with apically sclerotised median tooth; lobe situated exterior to process; both process and lobe of subequal length; outer face densely covered with long setae mostly in apical half, inner face covered with long thick bristles anteriorly and apically. Distal segment of aedeagus massive, broadly, unevenly expanding towards apex, strongly bulged anteriorly; lateral lobes moderately long, dilated towards apex which is rounded and with frayed margin. — Female. Proctiger cuneate, pointed apically; dorsal margin, in profile, slightly convex; densely covered with long setae. Subgenital plate subglobular, with tiny apical process; densely covered with moderately long setae in apical part and with long setae along ventral margin, dorsal margin with a row of bristles. Host-plant. Lycium sp. (Solanaceae).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B5887504FC60D22FC8BFB85.taxon	distribution	Distribution. Chile (III – IV Regions). Derivation of name. From Greek αδελφος = brotherly, similar, for its close resemblance to R. nolanae.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B5887504FC60D22FC8BFB85.taxon	discussion	Comments. Russelliana adelpha resembles R. globosa and nolanae in a weakly inclined head (<45 °), in short swollen genal processes, in a rhomboidal forewing with a brown pattern, a strongly curved vein C + Sc and a strongly curved vein Rs to fore margin apically, in a barrel-shaped male proctiger, in a cuneate male subgenital plate, in a shortly lamellar paramere bearing a recurved apico-anterior process and an apically rounded, strongly bulged apico-posterior lobe with a tooth, in a form of the distal segment of the aedeagus which is strongly inflated anteriorly, bearing lateral lobes and with a frayed margin apically, in a female subgenital plate, densely covered with long setae and in the presence of sexual dimorphism. R. adelpha differs from R. globosa and nolanae in a more extensive pattern on the male forewing membrane, and from R. globosa in a short distal segment of the aedeagus which is rounded apically and bearing lateral lobes dilated towards their apices, a cuneate female proctiger and subgenital plate bearing an apical process.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B5F87524FC60BBAFC12FD7D.taxon	materials_examined	Material examined. Type material. Paratypes: Chile: 1 ♂, 2 ♀, IV Region, Province Choapa, Agua dulce, 22. v. 1986, Adesmia microphylla (J. Solervicens) (MHNG, on slide); 1 ♂, 1 ♀, same but km 272 Panamericana Norte, 20. viii. 1985, Adesmia sp. (M. Elgueta) (MHNG, on slide); 1 ♂, same but Bahia ambrosioides (J. Solervicens) (MHNG, on slide); 2 ♂, 2 ♀, same but 23. i. 1986, Adesmia sp. (M. Elgueta) (MHNG, dry). Additional material: Chile: 2 ♂, 1 ♀, IV Region, Province Choapa, Los Vilos, 31 ° 54 ' S 71 ° 31 ' W, 0 m, 2. xii. 1993, coastal vegetation (D. Burckhardt) # 2 (MHNG, dry); 1 ♀, same but Province Elqui, 50 km S of La Serena, 1. xii. 1950 (E. S. Ross & A. E. Michelbacher) (CASC, dry); 3 ♂, 9 ♀, 2 immatures, same but 15 km SW Viñita Baja, 29 ° 50 ' S 70 ° 50 ' W, 450 m, 4. xii. 1993, Adesmia sp., quebrada with sparse scrub (D. Burckhardt) # 6 (MHNG, NHMB, dry); 8 ♂, 7 ♀, same but Province Limarí, Parque Nacional Fray Jorge, area between Quebrada Las Vacas, " Administración " and Río Limarí, 250 m, 7 – 9. xii. 1990, Adesmia bedwellii, open mediterranean scrub (D. Agosti & D. Burckhardt) # 2 (MHNG, dry); 19 ♂, 25 ♀, same but around " Administración ", 30 ° 40 ' S 71 ° 40 ' W, 100 m, 14 – 16. xii. 1992, Adesmia sp., mediterranean scrub (D. Burckhardt) # 25 (NHMB, dry); 6 ♂, 10 ♀, same but Alto de Talinay, 30 ° 40 ' S 71 ° 41 ' W, 500 m, 15. xii. 1992, Adesmia sp., sclerophyll forest and mediterranean scrub (D. Burckhardt) # 26 (NHMB, dry); 19 ♂, 11 ♀, 1 immature, same but Quebrada La Vaca, 30 ° 40 ' S 71 ° 40 ' W, 100 – 200 m, 15 – 17. xii. 1992, Adesmia sp., mediterranean scrub (D. Burckhardt) # 27 (NHMB, dry); 10 ♂, 18 ♀, 2 immatures, same but nr park entrance gate, 100 – 150 m, 16. xii. 1992, Adesmia sp. (D. Burckhardt) # 28 (NHMB, dry); 16 ♂, 22 ♀, V Region, Province Los Andes, 25 – 27 km E Los Andes, 32 ° 54 ' S 70 ° 18 ' W, 1250 m, 31. xii. 1993, Adesmia cf. pedicellata, mediterranean scrub (D. Burckhardt) # 42 (MHNG, dry); 7 ♂, 9 ♀, same but Province Petorca, Cuesta El Melón, 15 km N El Melón, 32 ° 40 ' S 71 ° 13 ' W, 450 m, 22. xi. 1992, Adesmia microphylla (D. Burckhardt) # 11 (NHMB, dry); 7 ♂, 4 ♀, same but 400 m, 22. xii. 1995, Adesmia sp. (D. Burckhardt) # 16 (1) (MHNG, dry, 70 % ethanol); 17 ♂, 27 ♀, same but Cuesta El Melón, 32 ° 36.4 ' S 71 ° 14.4 ' W, 600 m, 23. ii. 2009, Adesmia cf. glutinosa, degraded Acacia caven steppe and sclerophyll scrub on slope (D. Burckhardt) # 3 (1) (NHMB, dry, 70 % ethanol); 1 ♀, 1 immature, same but Alicahue to Chincolco, E Cabildo to La Ligua, 700 – 1250 m, 21 – 26. xii. 1998, semidesert and Acacia caven steppe (D. Burckhardt) # 3 (NHMB, dry, on slide); 2 ♂, 2 ♀, same but Province San Felipe de Aconcagua, Putaendo, 10 km N San Felipe, 32 ° 37 ' S 70 ° 42 ' W, 700 m, 26. xii. 1993, Adesmia cf. confusa, river bed, quebrada vegetation (D. Burckhardt) # 35 (MHNG, dry); 10 ♂, 16 ♀, same but 15 km E Llay-Llay, 32 ° 52 ' S 70 ° 51 ' W, 600 m, 28. xii. 1993, Adesmia cf. microphylla, Acacia caven steppe (D. Burckhardt) # 39 (MHNG, dry); 1 ♂, same but km 10 on road El Tártaro to El Guayacán, 1400 m, 24. xii. 1995, Adesmia sp. (D. Burckhardt) # 24 (4) (MHNG, dry); 1 ♂, same but La Calera, 300 m, 26. xii. 1995, waste land (D. Burckhardt) # 26 (MHNG, dry); 1?, same but Putaendo, 10 km N San Felipe, 700 m, 27. xii. 1995, Adesmia sp., river bed, quebrada vegetation (D. Burckhardt) # 27 (2) (MHNG, dry); 1 ♂, 2 ♀, same but km 20 Resguardo de Los Patos to Paso del Rubio, 1800 m, 1. i. 1999, Adesmia sp., semidesert and subalpine scrub (D. Burckhardt) # 11 (9) (NHMB, dry); 1 ♀, same but Resguardo de Los Patos, 32 ° 29.2 ' S 70 ° 33.9 ' W, 1350 m, 6. iii. 2009, Adesmia cf. glutinosa, Acacia caven scrub (D. Burckhardt) # 14 (4) (NHMB, dry); 15 ♂, 12 ♀, same but Province Quillota, Quillota, 32 ° 52 ' S 71 ° 13 ' W, 200 m, 1. i. 1994, Adesmia microphylla, Acacia caven steppe (D. Burckhardt) # 45 (MHNG, NHMB, dry); 3 ♂, 6 ♀, 5 immatures, same but La Palma, Fundo Lothar Neserke, 300 m, 30. xii. 1998, Adesmia cf. confusa [Adesmia cf. arborea], Acacia caven steppe and gully with mediterranean sclerophyll forest along very small river (D. Burckhardt) # 10 b (5) (NHMB, dry, on slide); 21 ♂, 34 ♀, 3 immatures, same but Province Valparaíso, Estero Catapilco, nr Maitencillo, 32 ° 40 ' S 71 ° 27 ' W, 50 m, 22. xi. 1992, Adesmia microphylla, open sclerophyll forest (D. Burckhardt) # 10 (NHMB, dry, on slide, 70 % ethanol); 1 ♂, 16 immatures, Region Metropolitana, Province Chacabuco, Tiltil, 5 km N Tiltil, 33 ° 01 ' S 70 ° 56 ' W, 700 m, 28. xii. 1993, Adesmia cf. glutinosa, open sclerophyll scrub (D. Burckhardt) # 40 (MHNG, dry); 2 ♂, 3 ♀, same but Province Talagante, Comuna Isla de Maipo, 4. v. 1993, Adesmia glutinosa, mediterranean scrub (D. Burckhardt) # 5 (1) (MHNG, dry).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B5F87524FC60BBAFC12FD7D.taxon	description	Description. Coloration. Head including genal processes pale yellow to dark brown, genal processes with dark tips, vertex with pale to dark brown pattern; clypeus brown to black. Eyes pale yellow to brown, ocelli orrange to red. Antenna dirty yellow to brownish, segments 1 – 2, 9 – 10 entirely dark brown, segments 3 – 8 with dark brown apices. Pronotum of the same colour as vertex, with the same orange to dark brown pattern, sometimes distinctly paler than mesonotum; mesopraescutum pale yellow to orange, with two brown patches along the fore margin and two orange patches posteriorly, sometimes entirely orange; mesoscutum orange with four broad and, in the middle, one narrow brown longitudinal stripes; mesoscutellum pale yellow along the margin, brown in the middle. Metanotum orange to dark brown. Forewing with pale yellow to brown veins and whitish membrane with conspicuous dark brown pattern consisting of constant patch along vein Cu 1 b and dots scattered over entire surface, partly confluent in apical part, forming broad submarginal stripe stretching from apical part of costal vein to apex of vein Cu 1 a, leaving light areas in cells r 2, m 1 and m 2 along the margin; sometimes with relatively distinct median broad stripe stretching from apical part of cell r 1 to base of vein Cu 1 b. Legs yellow to brown, often with dark brown femora and distal tarsal segments, meracanthus of metacoxa pale to bright yellow. Abdomen yellow to dark brown. Females often slightly lighter with ventrally lighter abdomen. Male terminalia dark brown, sometimes paramere yellow. Female proctiger dark brown, subgenital plate brown. Structure. Head, in profile, strongly inclined from longitudinal body axis (> 45 °). Vertex subtrapezoidal with indented foveae, anteriorly produced into transverse tubercle on either side of mid-line, with raised hind margin around lateral ocelli, covered with short setae; genal processes conical, slender, subacute apically, distinctly shorter than vertex; covered with moderately long setae. Pronotum with two pronounced lateral and one relatively shallow sublateral tubercles on either side. Forewing oval, broadly, unevenly rounded apically; vein C + Sc weakly curved, pterostigma long, vein Rs weakly sinuous, slightly curved to fore margin apically; vein M slightly longer than either of veins M 1 + 2 and M 3 + 4; surface spinules very dense, present in all cells, leaving no spinule-free stripes along the veins, irregularly spaced; radular spinules not pronounced. Metatibia with 6 – 7 spurs. Terminalia. Male. Proctiger tubular; sparsely covered with moderately long setae. Subgenital plate short, subglobular; with sparsely spaced moderately long setae. Paramere broadly lamellar; with apico-anterior process on pedicel, median hump with apically sclerotised median tooth, and slightly bulged apico-posterior lobe; process, hump and lobe of subequal length; outer face sparsely covered with moderately long setae mostly in posterior part, inner face densely covered with moderately long setae and with long setae in basal part. Distal segment of aedeagus elongate; with long anterior process, one large, raised apical and one horn-shaped apico-posterior tubercles; lateral lobes moderately long, dilated towards apex which is concave. — Female. Proctiger cuneate, pointed apically; dorsal margin, in profile, strongly convex; densely covered with moderately long setae in dorsal part. Subgenital plate cuneate, with moderately long apical process; sparsely covered with moderately long setae in apical half, dorsal margin with few bristles. Host-plants. Adesmia bedwellii Skottsb., A. cf. confusa Ulibarri, A. cf. glutinosa Hook. & Arn., A. microphylla Hook. & Arn. and A. pedicellata Hook. & Arn. (Fabaceae).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B5F87524FC60BBAFC12FD7D.taxon	distribution	Distribution. Reported from Chile (holotype ♂ from IV Region, Province Choapa, Agua dulce, 22. v. 1986, Adesmia microphylla (J. Solervicens) (MNNC, dry), not examined; Burckhardt 1986). Material examined. Chile (IV – V Regions, Region Metropolitana).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B5F87524FC60BBAFC12FD7D.taxon	discussion	Comments. Russelliana adesmiae resembles R. longirostro, in the presence of the three distinct tubercles on the pronotum, in a forewing membrane with a distinct brown pattern, in a broadly lamellar paramere bearing an apico-anterior process on a pedicel, in a distal segment of the aedeagus bearing a long anterior process, large, raised apical and horn-shaped apico-posterior tubercles and long lateral lobes dilated towards apex, and in a cuneate female proctiger and subglobular plate bearing a short apical process. R. adesmiae differs from R. longirostro in a shorter rostrum and the presence of a median hump of the paramere.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B5D87534FC60C22FAA9FBA2.taxon	materials_examined	Material examined. Type material. Holotype ♂: Bolivia: Department Chuquisaca, Province Nor Cinti, Padcoya to Camargo, 2800 – 3200 m, 26 – 28. xii. 1984 (L. E. Peña) (MHNG, dry). Paratype: Bolivia: 1 ♂, same but Lecori, S Potosi, 3200 m, 26 – 27. xii. 1984 (L. E. Peña) (MHNG, on slide). Additional material. Argentina: 181 ♂, 208 ♀, Province Chubut, Los Altares Valley, 3. x. 1987 (L. E. Peña) (MHNG, NHMB, dry, 70 % ethanol); 115 ♂, 176 ♀, 1 immature, same but 3 – 5. xi. 1990, Baccharis sp. (L. E. Peña) (NHMB, dry, on slide, 70 % ethanol); 5 ♂, 2 ♀, same but South Ameghino dam, 5. xi. 1990 (L. E. Peña) (NHMB, 70 % ethanol).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B5D87534FC60C22FAA9FBA2.taxon	description	Description. Coloration. Head including genal processes pale yellow to dark brown; clypeus brown to black. Eyes pale to dark brown, ocelli orange. Antenna yellow to brownish, sometimes segment 1 entirely brown and segment 2 brownish at base, segments 4 – 8 with dark brown apices, 9 – 10 entirely dark brown. Pronotum pale yellow with yellow spot in the middle, sometimes entirely black; mesopraescutum dirty yellow to orange, often with two pale to dark brown patches along the fore margin, sometimes with two pale to dark brown patches posteriorly; mesoscutum dirty yellow to orange, often with four broad, dark brown and, in the middle, one narrow, yellow to orange longitudinal stripes; mesoscutellum yellow to brown, often orange to brownish in the middle. Metanotum yellow to black. Forewing with bright yellow to dark brown veins and colourless to greyish membrane with indistinct yellow to distinct brownish patch along vein Cu 1 b, fumose in the middle of all cells and almost transparent along the veins. Legs pale to dirty yellow, sometimes femora and distal tarsal segments darker, meracanthus of metacoxa pale to dirty yellow. Abdomen and terminalia pale to dark brown. Structure. Head, in profile, moderately to strongly inclined from longitudinal body axis (45 – 90 °). Vertex subtrapezoidal with indented foveae, anteriorly slightly produced into transverse tubercle on either side of midline, with raised hind margin around lateral ocelli, covered with short setae; genal processes conical, slender, subacute apically, distinctly shorter than vertex, covered with long setae. Forewing oblong-oval, broadly, evenly rounded apically; vein C + Sc weakly curved, pterostigma long, vein Rs straight apically; vein M about as long as either of veins M 1 + 2 and M 3 + 4; surface spinules present in all cells, leaving broad spinule-free stripes along the veins, sparsely and irregularly spaced, sometimes spinules entirely reduced in apical half of the wing; radular spinules covering triangular areas along the margin of cells r 2, m 1, m 2 and cu 1. Metatibia with 7 apical spurs. Terminalia. Male. Proctiger tubular; sparsely covered with moderately long setae. Subgenital plate short, subglobular; with densely spaced moderately long setae. Paramere irregularly subtrapezoidal; with long hookshaped apico-anterior process on pedicel, median hump slightly recurved with apically sclerotised tooth, and strongly bulged, curved inwards apico-posterior lobe; process, hump and lobe of subequal length; outer face densely covered with moderately long setae mostly in apical half, inner face densely covered with short setae in anterior part and with long setae in posterior and basal part. Distal segment of aedeagus moderately elongate, weakly expanding towards apex; with long, straight anterior process, one horn-shaped apical and one angular apico-posterior tubercles; lateral lobes long, strongly dilated towards apex which is concave. — Female. Proctiger cuneate, pointed apically; dorsal margin, in profile, weakly sinuous; densely covered with moderately long setae in apical half. Subgenital plate cuneate, with short apical process; densely covered with long setae, dorsal margin with a row of bristles. Host-plant. Unknown. Numerous adults and a single immature were collected from Baccharis sp. (Asteraceae).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B5D87534FC60C22FAA9FBA2.taxon	distribution	Distribution. Reported from Bolivia (Chuquisaca) (Burckhardt 1987) and as Russelliana sp. cf. adunca from Argentina (Chubut) (Serbina et al. 2015).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B5D87534FC60C22FAA9FBA2.taxon	discussion	Comments. The paratype female specimens from Bolivia (Department Chuquisaca) previously assigned to Russelliana adunca (Burckhardt 1987; Serbina et al. 2015) belong to R. caunda sp. nov. Descriptions for female of R. adunca are given here for the first time. Russelliana adunca resembles R. brevigenis, caunda and didyma in a colourless, slightly greyish forewing membrane without a pattern except for fumose areas in the middle of cells in the apical third of the wing and a brown patch along the vein Cu 1 b, in an irregularly subtrapezoidal paramere bearing a hook-shaped apico-anterior process on a long pedicel, a recurved median hump with a tooth, and an apico-posterior lobe, in a distal segment of the aedeagus bearing a long anterior process, two tubercles and large lateral lobes which are dilated towards their apices, and in a cuneate female proctiger and subgenital plate bearing a short apical process. R. adunca differs from R. caunda and didyma in shorter setae on the female terminalia, from R. brevigenis in long genal processes, and from R. didyma in a long apico-posterior lobe of the paramere with a strongly constricted base, a relatively straight anterior process of the distal segment of the aedeagus, and a relatively stout apex of the female proctiger.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B5C874C4FC60B64FA01FCA5.taxon	materials_examined	Material examined. Holotype ♂: Chile: IV Region, Province Limarí, Parque Nacional Fray Jorge, Alto de Talinay, 30 ° 40 ' S 71 ° 41 ' W, 550 m, 6 – 7. xii. 1990, Haplopappus foliosus, mediterranean scrub (D. Agosti & D. Burckhardt) # 1 b (MHNG, dry). Paratypes: Chile: 10 ♂, 17 ♀, same as holotype (D. Agosti & D. Burckhardt) # 1 b (MHNG, NHMB, dry, on slide); 1 ♀, same but 250 m, 7 – 9. xii. 1990, Schinus molle (D. Burckhardt) # 2 (NHMB, dry); 1 ♀, same but Baccharis paniculata [Neomolina paniculata] (D. Burckhardt) # 2 (NHMB, dry); 8 ♂, 16 ♀, 4?, same but 500 m, 15. xii. 1992, Haplopappus foliosus, sclerophyll forest and mediterranean scrub (D. Burckhardt) # 26 (NHMB, dry, on slide).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B5C874C4FC60B64FA01FCA5.taxon	description	Description. Coloration. Head black, genal processes pale yellow, black at base, sometimes entirely black with pale yellow tips; clypeus black. Eyes red to brown, ocelli yellow. Antenna pale yellow, segment 1 brown at least at base, sometimes segments 4 – 8 with pale brown apices, segments 9 – 10 brownish. Thorax black. Metanotum yellow with broad, black longitudinal stripe in the middle. Forewing with pale to bright yellow veins and pale yellow to amber-coloured membrane. Legs pale to bright yellow, meracanthus of metacoxa yellow to orange. Abdomen pale yellow to orange; terminalia pale to bright yellow. Female terminalia with dark apex. Structure. Head, in profile, strongly inclined from longitudinal body axis at 90 °. Vertex subtrapezoidal with indented foveae, anteriorly produced into transverse lobe on either side of mid-line, with slightly raised hind margin around lateral ocelli, covered with microscopical setae; genal processes conical, slender, subacute apically, of the same length as vertex, covered with moderately long setae. Pronotum with one pronounced lateral and one relatively shallow sublateral tubercles on either side. Forewing oval, narrowly, evenly rounded apically; vein C + Sc weakly curved, pterostigma long, vein Rs straight, curved backwards apically; vein M about as long as either of veins M 1 + 2 and M 3 + 4; surface spinules present in all cells, leaving narrow spinule-free stripes along the veins, relatively densely and irregularly spaced; absent at base of cell c + sc; radular spinules covering triangular areas along the margin of cells r 2, m 1, m 2 and cu 1. Metatibia with 5 – 7 apical spurs. Terminalia. Male. Proctiger tubular, sparsely covered with moderately long setae in apical two thirds. Subgenital plate short, subglobular, with sparsely spaced moderately long setae. Paramere narrowly lamellar, irregularly rounded apically; with long hook-shaped apico-anterior process on very short pedicel and lobe with apically sclerotised median tooth; lobe situated exterior to process; outer face sparsely covered with moderately long setae mostly in apical part, inner face densely, evenly covered with moderately long setae and with few long setae along ventral margin of process. Distal segment of aedeagus moderately elongate, weakly expanding towards apex; with short beak-shaped anterior process and one horn-shaped apico-posterior tubercle; lateral lobes long, dilated towards apex which is slightly concave. — Female. Proctiger subglobular, pointed apically; dorsal margin, in profile, strongly bent downwards; densely covered with moderately long setae. Subgenital plate cuneate, with tiny apical process; densely covered with long setae in apical half, dorsal margin with a row of bristles. Host-plants. Adults were collected on Baccharis paniculata DC. and Haplopappus foliosus DC. (Asteraceae) which are likely hosts.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B5C874C4FC60B64FA01FCA5.taxon	distribution	Distribution. Chile (IV Region). Derivation of name. From Latin bicolor = two coloured, referring to the bichrome body colour.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B5C874C4FC60B64FA01FCA5.taxon	discussion	Comments. Russelliana bicolorata resembles R. adela, intermedia and xantha; see comments under R. adela. R bicolorata differs from the three species in a contrasting yellow-black body colour and a shape of the forewing which is broadest in the middle. It differs from R. adela in a yellow forewing membrane and a female proctiger with a dorsal margin bent downwards, and from R. intermedia in the absence of a median hump of the paramere.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B43874D4FC60C60FBD0FC43.taxon	materials_examined	Material examined. Holotype ♂: Chile: IV Region, Province Elqui, along road from Viñita Baja to Condoriaco, 29 ° 45 ' S 70 ° 50 ' W, 1000 – 1400 m, 4. xii. 1993, Solanaceae, dry slope with Trichocereus and various shrubs (D. Burckhardt) # 7 (MHNG, dry). Paratypes: Chile: 1 ♂, 1 ♀, III Region, Province Huasco, ca 10 km W Domeyko, 28 ° 57 ' S 70 ° 55 ' W, 600 m, 6. xii. 1993,? Lycium sp., steppe (D. Burckhardt) # 14 (MHNG, dry); 2 ♂, IV Region, Province Elqui, 15 km SW Viñita Baja, 29 ° 50 ' S 70 ° 50 ' W, 450 m, 4. xii. 1993,? Lycium sp., sparse scrub (D. Burckhardt) # 6 (MHNG, dry); 14 ♂, 11 ♀, 14 immatures, same as holotype (D. Burckhardt) # 7 (BMNH, MHNG, dry); 1 ♂, 3 ♀, 1?, same but 15 km E Vicuña, 30 ° 10 ' S 70 ° 40 ' W, 850 m, 5. xii. 1993, Solanaceae, river bed with Baccharis and dry slope with small shrubs (D. Burckhardt) # 10 (MHNG, dry); 3 ♀, same but? Lycium sp. (D. Burckhardt) # 10 (NHMB, dry); 2 ♂, 5 ♀, same but 16 km N Chapilca, nr Río Turbio, road to Llanos de Huanta, ca 80 km E La Serena, 1100 m, 17. xii. 1995, Lycium sp., very dry quebrada with some scattered shrubs, mainly Baccharis, and Prosopis tamarugo trees, with grass along the river (D. Burckhardt) # 2 (3) (MHNG, dry); 6 ♂, 7 ♀, 11 immatures, same but ca 45 km ENE La Serena, Viñita Baja to Condoriaco, 800 – 1000 m, 19. xii. 1995, Lycium sp., quebrada and mountain slope (D. Burckhardt) # 10 (3) (MHNG, dry, on slide, 70 % ethanol).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B43874D4FC60C60FBD0FC43.taxon	description	Description. Coloration. Head including genal processes pale yellow, genae pale yellow to brown; clypeus yellow. Eyes pale yellow to brown, ocelli red. Antenna yellow, segments 4 – 8 with dark brown apices, segments 9 – 10 entirely dark brown. Pronotum pale yellow, sometimes with yellow dot in the middle; mesopraescutum pale yellow with two orange patches along the fore margin and often with two yellow to pale orange patches posteriorly; mesoscutum pale yellow with four broad orange and, in the middle, one narrow pale yellow to pale orange longitudinal stripes; mesoscutellum pale yellow along the margin, yellow to orange in the middle. Metanotum pale yellow. Forewing with pale yellow veins and colourless membrane with indistinct brown patch along vein Cu 1 b and yellowish shadows in apical part of cells r 1, r 2, m 1, m 2 and cu 1. Legs pale yellow, sometimes with slightly darker distal tarsal segments, meracanthus of metacoxa pale yellow. Abdomen and terminalia yellow. Paramere slightly darker apically. Female proctiger dark in apical third, subgenital plate with dark apex. Structure. Head, in profile, inclined from longitudinal body axis at 45 °. Vertex subtrapezoidal with indented foveae, anteriorly produced into transverse lobe on either side of mid-line, with raised hind margin around lateral ocelli, covered with short setae; genal processes very short, conical, subacute apically, covered with moderately long setae. Forewing oval, broadly, evenly rounded apically; vein C + Sc hardly curved, pterostigma long, vein Rs weakly sinuous, almost straight apically; vein M about as long as either of veins M 1 + 2 and M 3 + 4; surface spinules absent; radular spinules covering triangular areas along the margin of cells r 2, m 1, m 2 and cu 1. Metatibia with 7 apical spurs. Terminalia. Male. Proctiger tubular; densely covered with moderately long setae, forming longitudinal rows posteriorly. Subgenital plate short, subglobular; with sparsely spaced long setae restricted to median part. Paramere irregularly subtrapezoidal; with apico-anterior process on long pedicel, median recurved hump with apically sclerotised tooth, and long, strongly bulged apico-posterior lobe; both hump and lobe of subequal length and slightly shorter than process; outer face sparsely covered with moderately long setae in anterior and posterior parts, inner face sparsely covered with moderately long setae. Distal segment of aedeagus elongate; with long, straight anterior process, one horn-shaped apical and one angular apico-posterior tubercles; lateral lobes long, dilated towards apex which is concave. — Female. Proctiger cuneate, pointed apically; dorsal margin, in profile, slightly convex; densely covered with moderately long setae in apical half. Subgenital plate cuneate, with short apical process; relatively sparsely covered with long setae, dorsal margin with few bristles. Host-plant. Lycium sp. (Solanaceae).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B43874D4FC60C60FBD0FC43.taxon	distribution	Distribution. Chile (III – IV Regions). Derivation of name. From Latin brevis = short and gena = cheek, referring to the short genal processes.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B43874D4FC60C60FBD0FC43.taxon	discussion	Comments. A few specimens from Chile (6 ♂, 7 ♀, 11 immatures, IV Region, Province Elqui, ca 45 km ENE La Serena) previously assigned to Russelliana solanicola in Serbina et al. (2015) belong to R. brevigenis sp. nov. Russelliana brevigenis resembles R. adunca, caunda and didyma; see comments under R. adunca. R. brevigenis differs from the three species in very short genal processes. It differs from R. caunda and didyma in shorter setae covering the female terminalia, from R. caunda in a very long, strongly curved median hump of the paramere, and from R. didyma in the presence of surface spinules in the apical part of the forewing membrane, a long apico-posterior lobe of the paramere with a strongly constricted base, a relatively straight anterior process of the distal segment of the aedeagus, and a relatively stout apex of the female proctiger.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B42874E4FC60B78FD1BF915.taxon	materials_examined	Material examined. Type material. Paratypes: Argentina: 5 ♂, 5 ♀, Province Río Negro, El Bolsón, Mt. Piltriquitron, 1. iv. 1961, 680 m (G. Topál) (MHNG, dry, on slide). Additional material. Chile: 8 ♂, 16 ♀, 4 immatures, VII Region, Province Talca, Parque Gil de Vilches, Monumento Natural, 35 ° 35 ' S 71 ° 04 ' W, 1100 m, 4 – 5. i. 1994, Dipyrena juncea [Diostea juncea], mixed Nothofagus forest (D. Burckhardt) # 47 (MHNG, NHMB, dry); 8 ♂, 8 ♀, 4 immatures, same but sector Piedras blancas, 1350 – 1600 m, 12. i. 1996, Dipyrena juncea [Diostea juncea] (D. Burckhardt) # 43 (4) (MHNG, dry, 70 % ethanol); 34 ♂, 52 ♀, 12 immatures, 4 immature skins, same but sector Majadilla, 135 0 – 1550 m, 13. i. 1996, Dipyrena juncea [Diostea juncea], deciduous and evergreen Nothofagus forests (D. Burckhardt) # 44 (12) (MHNG, NHMB, dry, on slide, 70 % ethanol); 45 ♂, 37 ♀, 10 immatures, same but sendero El Enladrillado, El Venado Valley, 1350 – 1700 m, 14. i. 1996, Dipyrena juncea [Diostea juncea], mixed Nothofagus forest (D. Burckhardt) # 45 (1) (MHNG, dry, 70 % ethanol); 28 ♂, 62 ♀, 5 immatures, VIII Region, Province Bío-Bío, Parque Nacional Laguna del Laja, sector Chacay, 1200 m, 19. i. 1996, Dipyrena juncea [Diostea juncea], Austrocedrus forest and open sclerophyll scrub (D. Burckhardt) # 53 (3) (MHNG, NHMB, dry, 70 % ethanol); 1 ♂, same but outside Parque Nacional Laguna del Laja, Park entrance to El Abanico, 900 – 1100 m, 22. i. 1996, Dipyrena juncea [Diostea juncea], dense forest along river (D. Burckhardt) # 58 (5) (MHNG, dry); 1 ♂, same but Province Ñuble, 2.7 km Las Trancas, 29. i. 1967 (E. I. Schlinger) (CASC, dry); 1 ♂, 1 ♀, IX Region, Province Malleco, 10 km W Termas de Tolhuaca, 1100 m, 23. i. 1996, Dipyrena juncea [Diostea juncea], deciduous Nothofagus forest (D. Burckhardt) # 60 (3) (MHNG, dry); 11 ♂, 27 ♀, 3 immatures, same but Parque Nacional Tolhuaca, sector Laguna Malleco, 900 m, 23 – 27. i. 1996, Dipyrena juncea [Diostea juncea], mixed Nothofagus forest (D. Burckhardt) # 61 b (14) (MHNG, dry, 70 % ethanol).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B42874E4FC60B78FD1BF915.taxon	description	Description. Coloration. General colour of body pale yellow to orange. Head including genal processes pale to bright yellow; clypeus pale yellow to brown. Eyes pale yellow to dark brown, ocelli red. Antenna yellow to brownish, segments 3 – 8 with more or less distinct brown apices, segments 9 – 10 entirely dark brown. Thorax pale yellow to orange; pronotum of the same colour as vertex, slightly paler than mesonotum, with pale brown spots on either side; mesopraescutum with two pale brown patches along the fore margin; mesoscutum sometimes with four broad pale brown longitudinal stripes. Metanotum pale yellow to brown. Forewing with yellow veins and ambercoloured membrane. Legs pale to bright yellow, sometimes with brownish femora and distal tarsal segments, meracanthus of metacoxa pale yellow. Abdomen and terminalia green / pale yellow to brown. Female proctiger with dark apex. Teneral specimens almost entirely yellow. Structure. Head, in profile, moderately to strongly inclined from longitudinal body axis (45 – 90 °). Vertex subtrapezoidal, flat with indented foveae, anteriorly produced into transverse lobe on either side of mid-line, with slightly raised hind margin around lateral ocelli, covered with microscopical setae; genal processes conical, slender, subacute apically, slightly shorter than vertex, covered with long setae. Pronotum with two pronounced lateral tubercles on either side. Forewing oblong-oval, narrowly, evenly rounded apically; vein C + Sc strongly, unevenly curved, pterostigma long, vein Rs almost straight apically; vein M longer than either of veins M 1 + 2 and M 3 + 4; surface spinules dense, present in all cells, leaving narrow spinule-free stripes along the veins, irregularly spaced, forming transverse rows; absent in basal third of cell c + sc; radular spinules covering rounded areas along the margin of cells r 2, m 1, m 2 and cu 1. Metatibia with 6 – 8 apical spurs. Terminalia. Male. Proctiger tubular; sparsely covered with moderately long setae. Subgenital plate elongate, with ventral hump; with densely spaced long setae restricted to median part, gradually becoming shorter towards ventral part. Paramere narrowly lamellar; with thumb-like, apically evenly rounded apico-anterior process on long pedicel and slightly bulged apico-posterior lobe with inwards directed sclerotised anterior tooth situated at apex of the lobe; lobe sligthly longer than process; apical part of anterior edge of lobe angular and apical part of posterior edge rounded; outer face sparsely covered with moderately long setae mostly in apical part, inner face densely covered with long thick bristles apically and posteriorly. Distal segment of aedeagus massive, broadly, unevenly expanding towards apex, strongly bulged anteriorly and concave apically; with apico-posterior tubercle curved forward; lateral lobes long, slightly dilated towards apex which is concave and with frayed margin. — Female. Proctiger subglobular, pointed apically; dorsal margin, in profile, strongly bent downwards; sparsely covered with moderately long setae. Subgenital plate subglobular, with short apical process; densely covered with long setae in apical part and with moderately long setae along ventral margin. Host-plant. Dipyrena juncea (Gillies & Hook.) Ravenna (Verbenaceae).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B42874E4FC60B78FD1BF915.taxon	distribution	Distribution. Reported from Argentina (holotype ♂ from Río Negro, El Bolsón, Mt. Piltriquitron, 1. iv. 1961, 680 m (G. Topál) (HNHM, dry), not examined; Burckhardt 1987), Chile (V, VII – IX Regions) (Burckhardt 1987, 2008 a). Material examined. Argentina (Río Negro) (paratypes of R. bulbosa), Chile (VII – IX Regions).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B42874E4FC60B78FD1BF915.taxon	discussion	Comments. Russelliana bulbosa resembles R. diosteae and sebastiani in a forewing with a strongly curved vein C + Sc, in a paramere bearing a finger-shaped apico-anterior process and a strongly bulged apico-posterior lobe, densely covered with long thick bristles apically, in a distal segment of the aedeagus strongly expanding to apex, bearing long lateral lobes with a frayed apical margin, and in a subglobular female proctiger with its dorsal margin bent downwards, and a subglobular subgenital plate. R. bulbosa differs from the two species in shorter antenna, a yellow forewing membrane lacking pattern, a forewing narrowly and evenly rounded apically and bearing a long pterostigma, a paramere bearing an apico-anterior process and an apico-posterior lobe of subequal length, a distal segment of the aedeagus bearing an apico-posterior tubercle curved forward, and in a female subgenital plate bearing an apical process. It differs from R. sebastiani in slender longer genal processes, a broader forewing with a shorter cell m 1, a thumb-like apico-anterior process of the paramere, and a distal segment of the aedeagus which is strongly inflated anteriorly.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4187484FC609CAFC81FD8D.taxon	materials_examined	Material examined. Type material. Paratypes: Brazil: 2 ♂, 1 ♀, same as holotype (H. Catling) (MHNG, dry). Additional material. Argentina: 1 ♂, Province Buenos Aires, Zelaya, i. 1943 (J. B. Daguerre) (MHNG, on slide); 8 ♂, 9 ♀, 10 immatures, same but Province Entre Ríos, Concordia, Ciudad de Concordia, 10. iii. 2010, Capsicum annuum (J. P. Bouvet) (NHMB, dry, on slide, 70 % ethanol). Brazil: 13 ♂, 23 ♀, 8 immatures, 2 immature skins, State Minas Gerais, Río Verde do Mato Grosso, BR 163, 18 ° 55.7 / 57.1 ' S 54 ° 50.1 / 56.0 ' W, 35 0 – 440 m, 13. xi. 2012, Capsicum annuum, Cerrado vegetation, park (D. Burckhardt & D. L. Queiroz) # 68 (6) (NHMB, 70 % ethanol); 3 ♂, 4 ♀, same but State Paraná, Curitiba, Parque Bacacheri, 25 ° 19.2 – 20.1 ' S 49 ° 09.4 – 10.1 ' W, 920 m, 6. iv. 2013, Capsicum annuum, park, remnants of Atlantic forest (D. Burckhardt & D. L. Queiroz) # 98 (3) (NHMB, 70 % ethanol); 1 ♀, same but Parque Barigui, 25 ° 24.9 / 25.6 ' S 49 ° 18.6 ' W, 900 m, 19. vii. 2012, park with remnant of natural Araucaria forest (D. Burckhardt & D. L. Queiroz) # 43 (NHMB, 70 % ethanol); 23 ♂, 17 ♀, 24 immatures, 2 skins, same but Jardim Botânico, 25 ° 26.5 / 6 ' S 49 ° 14.2 / 3 ' W, 930 m, 19. vii. 2012, Capsicum annuum, planted park vegetation and remnant of Araucaria forest edge (D. Burckhardt & D. L. Queiroz) # 44 (2) (NHMB, 70 % ethanol); 4 ♂, 5 ♀, same but 15. ii. 2013, Capsicum annuum, forest reserve, edge of Atlantic forest (D. Burckhardt & D. L. Queiroz) # 94 A (9) (NHMB, 70 % ethanol); 105 ♂, 55 ♀, 30 immatures, 22 immature skins, same but 25 ° 26.476 ' S 49 ° 14.271 ' W, 915 m, 12. iii. 2013 (D. L. Queiroz) # 462 (NHMB, on slide, 70 % ethanol); 1 ♂, 4 ♀, same but Parque Passaúna, 25 ° 28.5 ' S 49 ° 22.7 ' W, 930 m, 27 – 30. xi. 2012, Capsicum annuum, planted park vegetation and edge of Araucaria forest remnant (D. Burckhardt & D. L. Queiroz) # 78 (2) (NHMB, dry); 1 ♂, 3 ♀, same but 25 ° 28.5 ' S 49 ° 22.6 ' W, 940 m, 5. ii. 2013, Capsicum annuum (D. Burckhardt & D. L. Queiroz) # 89 (8) (NHMB, 70 % ethanol); 4 ♂, 13 ♀, same but Parque Tanguá, 25 ° 22.9 ' S 49 ° 17.1 ' W, 930 m, 6. ii. 2013, Capsicum annuum, old mine redone as park with seminatural biotopes, mixed Atlantic Araucaria forest (D. Burckhardt & D. L. Queiroz) # 90 (16) (NHMB, 70 % ethanol); 2 ♂, 1 ♀, same but Parque Tingui, 25 ° 23.2 / 7 ' S 49 ° 18.4 ' W, 910 – 920 m, 31. i. 2016, Capsicum annuum, planted park vegetation and remnants of Araucaria forest edge (D. Burckhardt & D. L. Queiroz) # 189 (9) (NHMB, 70 % ethanol).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4187484FC609CAFC81FD8D.taxon	description	Description. Coloration. General colour of body yellow. Head yellow to brown, genal processes pale to bright yellow; clypeus pale brown to black. Eyes red to dark brown, ocelli orange. Antenna pale yellow, segments 3 – 8 with more or less distinct brown apices, segments 9 – 10 entirely dark brown. Thorax entirely pale to bright yellow; mesopraescutum with two bright yellow to orange patches along the fore margin; mesoscutum with four broad bright yellow to orange longitudinal stripes. Forewing with whitish to dark brown veins and membrane with brown to dark brown pattern consisting of two broad transverse stripes: submarginal one stretching from apical part of costal vein to median part of cell cu 1 leaving light areas in cells r 2, m 1, m 2 and cu 1 along the margin, and median one stretching from median part of vein C + Sc to apical part of anal vein; membrane between two bands colourless, sometimes with few dark brown dots in cells and sometimes on veins. Legs pale to dirty yellow, sometimes with brownish femora, meracanthus of metacoxa pale yellow. Abdomen yellow to brown; terminalia pale yellow to orange. Female proctiger with dark apex. Females with slightly lighter head and abdomen. Structure. Head, in profile, weakly inclined from longitudinal body axis (<45 °). Vertex trapezoidal, flat, anteriorly produced into transverse lobe on either side of mid-line, hind margin around lateral ocelli not raised, covered with microscopical setae; genal processes short, swollen, slightly conical apically, covered with short setae. Pronotum with two pronounced lateral and one relatively shallow sublateral tubercles on either side. Forewing rhomboidal; vein C + Sc strongly, unevenly curved, pterostigma long, vein Rs almost straight, strongly curved to fore margin apically; vein M about as long as either of veins M 1 + 2 and M 3 + 4; surface spinules large, very dense, present in all cells, leaving narrow spinule-free stripes along the veins, forming hexagons, less developed on unpigmented areas; radular spinules not pronounced. Metatibia with 5 – 7 apical spurs. Terminalia. Male. Proctiger tubular; sparsely covered with moderately long setae in apical half. Subgenital plate elongate; with sparsely spaced moderately long setae in apical half. Paramere narrowly lamellar; with recurved apico-anterior process on pedicel and long apico-posterior lobe with inwards directed sclerotised anterior tooth situated at base of the lobe; lobe about twice longer than process; outer face sparsely covered with moderately long setae mostly in apical half, inner face densely covered with long thick bristles apically. Distal segment of aedeagus massive, broadly evenly expanding towards apex; with one small apico-posterior tubercle; lateral lobes moderately long, dilated towards apex which is irregularly rounded and with frayed margin. — Female. Proctiger subglobular, pointed apically; dorsal margin, in profile, strongly bent downwards; densely covered with moderately long setae. Subgenital plate subglobular, rounded apically, with tiny apical process; densely covered with long setae in apical half. Host-plant. Capsicum annuum L. (Solanaceae).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4187484FC609CAFC81FD8D.taxon	distribution	Distribution. Reported from Argentina (Buenos Aires, Entre Ríos), Brazil (Minas Gerais, Paraná, Santa Catarina, São Paulo) (Burckhardt 1987; Burckhardt & Queiroz 2012; Burckhardt et al. 2012). Holotype ♂ from São Paulo, Piracicaba, viii – ix. 1969, Capsicum annuum (M. de Menezes) (BMNH, dry), not examined here; Burckhardt 1987. Material examined. Argentina (Buenos Aires, Entre Ríos), Brazil (Minas Gerais, Paraná).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4187484FC609CAFC81FD8D.taxon	discussion	Comments. Russelliana capsici resembles R. dimorpha and lycii in a weakly inclined head (<45 °), in short swollen genal processes, in a forewing with a brown pattern, a strongly curved vein C + Sc and a vein Rs strongly curved to the fore margin apically, in a tubular male proctiger, in a cuneate male subgenital plate, in a narrowly lamellar paramere bearing a short apico-anterior process and a long apico-posterior lobe with a tooth, in a distal segment of the aedeagus broadly expanded towards apex and bearing lateral lobes with a frayed margin apically, in a subglobular female proctiger with its dorsal margin bent downwards, and a subgenital plate densely covered by setae. R. capsici differs from the two species in the absence of sexual dimorphism. It differs from R. dimorpha in shorter setae on the female subgenital plate, and from R. lycii in a recurved apico-anterior process of the paramere and a female subgenital plate bearing an apical process.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4787494FC60DB2FA11F917.taxon	materials_examined	Material examined. Holotype ♂: Chile: V Region, Province San Felipe de Aconcagua, Putaendo, 10 km N San Felipe, 32 ° 37 ' S 70 ° 42 ' W, 700 m, 26. xii. 1993, Lycium cf. chilense, river bed, quebrada vegetation (D. Burckhardt) # 35 (MHNG, dry). Paratypes: Argentina: 1 ♀, Province Jujuy, Iturbe, 31. xii. 1984 (L. E. Peña) (MHNG, dry); 1 ♂, 11 ♀, Province Mendoza, Mendoza Valley, Uspallata to Potrerillos, 1700 m, 30 – 31. xii. 1995, Lycium sp., scrub (D. Burckhardt) # 30 (1) (MHNG, dry, on slide, 70 % ethanol); 1 ♂, same but Potrerillos, 1500 m, 31. xii. 1995, Lycium sp. (D. Burckhardt) # 31 (2) (NHMB, on slide); 1 ♂, same but Villa Hodel, km 7 on road Cacheuta to Mendoza, 1100 m, 17. i. 1997, Lycium sp., scrub along road (D. Burckhardt) # 12 (NHMB, dry); 1 ♂, 7 ♀, same but Potrerillos, 1300 m, Lycium sp., steppe with shrubs (D. Burckhardt) # 11 (1) (MHNG, 70 % ethanol); 7 ♂, 11 ♀, same but km 18 Mendoza to Villa Vicencia, 700 m, 18. i. 1997, Lycium sp., pampa (D. Burckhardt) # 13 (3, 4) (MHNG, on slide, 70 % ethanol). Bolivia: 2 ♀, Department Chuquisaca, Province Nor Cinti, Lecori, S Potosi, 3200 m, 26 – 27. xii. 1984 (L. E. Peña) (MHNG, dry, on slide); 1 ♂, 1 ♀, same but Padcoya to Camargo, 2800 – 3200 m, 26 – 28. xii. 1984 (L. E. Peña) (MHNG, dry, on slide); 1 ♂, 6 ♀, Department La Paz, Province Aroma, 7 km NE Patacamaya, 17 ° 9.5 ' S 67 ° 56.7 ' W, 3800 m, 21. iii. 2001 (A. Freidberg) (NHMB, dry). Chile: 1 ♂, 1 ♀, IV Region, Province Elqui, Panamericana km 550, 85 km N La Serena, 29 ° 25 ' S 71 ° 10 ' W, 200 m, 6. xii. 1993, Nolana cf. sedifolia, steppe (D. Burckhardt) # 12 (MHNG, dry); 1 ♀, same but 10 km S Vicuña towards Hurtado, 900 m, 18. xii. 1995, Lycium sp., semidesert with a few scattered Prosopis chilensis trees in quebrada (D. Burckhardt) # 7 (1) (MHNG, dry); 1 ♂, same but ca 40 km E La Serena, 5 km SW Vinita Baja, 450 m, 19. xii. 1995, Lycium sp., quebrada (D. Burckhardt) # 9 (2) (MHNG, dry); 9 ♂, 7 ♀, 5 immatures, same as holotype (D. Burckhardt) # 35 (BMNH, MHNG, NHMB, dry, on slide); 102 ♂, 94 ♀, same but 15. xii. 1995, Lycium sp. (D. Burckhardt) # 1 (7) (MHNG, dry, on slide, 70 % ethanol). Additional material. Chile: 1 ♀, V Region, Province Petorca, La Viña to Alicahue, E Cabildo to La Ligua, 600 m, 21. xii. 1998, semidesert, degraded Acacia caven steppe and sclerophyll forest along river (D. Burckhardt) # 2 (NHMB, dry); 1 ♂, same but Province San Felipe de Aconcagua, Termas de Jahuel, 1000 – 1100 m, 27. xii. 1998, Acacia caven steppe with some planted exotic trees (D. Burckhardt) # 8 (NHMB, dry).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4787494FC60DB2FA11F917.taxon	description	Description. Coloration. Head including genal processes pale yellow, vertex often with yellow pattern; clypeus bright yellow to dark brown. Eyes pale yellow to brown, ocelli red. Antenna yellow to brownish, segments 3 – 8 with dark brown apices, segments 9 – 10 entirely dark brown. Pronotum pale yellow with yellow to orange dot in the middle; mesopraescutum pale yellow with two orange patches along the fore margin and two posteriorly; mesoscutum pale yellow with four broad and, in the middle, one narrow orange longitudinal stripes; mesoscutellum pale yellow along the margin, orange in the middle. Metanotum yellow. Forewing with pale yellow to brownish veins and semitransparent, yellowish membrane with distinct brown patch along vein Cu 1 b and brownish shadows in apical part of cells r 1, r 2, m 1, m 2 and cu 1. Legs pale to bright yellow, sometimes with slightly darker femora and distal tarsal segments, meracanthus of metacoxa pale yellow. Abdomen and terminalia pale yellow to brown. Male proctiger and paramere slightly darker apically. Female proctiger dark in apical third, subgenital plate with dark apex. Structure. Head, in profile, inclined from longitudinal body axis at 45 °. Vertex subtrapezoidal with indented foveae, anteriorly slightly produced into transverse tubercle on either side of mid-line, with raised hind margin around lateral ocelli, covered with short setae; genal processes conical, slender, subacute apically, distinctly shorter than vertex; covered with moderately long setae. Forewing oval, broadly, evenly rounded apically; vein C + Sc hardly curved, pterostigma long, vein Rs almost straight apically; vein M about as long as either of veins M 1 + 2 and M 3 + 4; surface spinules relatively dense, present in all cells, leaving narrow spinule-free stripes along the veins, forming indistinct hexagons in apical half; absent at base of cell c + sc; radular spinules covering triangular areas along the margin of cells r 2, m 1, m 2 and cu 1. Metatibia with 6 – 8 apical spurs. Terminalia. Male. Proctiger tubular; densely covered with moderately long setae. Subgenital plate short, subglobular; with sparsely spaced long setae, dorsal margin with a row of bristles. Paramere irregularly subtrapezoidal; with apico-anterior process on long pedicel, median slightly recurved hump with apically sclerotised tooth, and bulged apico-posterior lobe; process, hump and lobe of subequal length; outer face sparsely covered with moderately long setae mostly in apical half, inner face sparsely covered with short to moderately long setae and with longer setae along the posterior margin of lobe and the anterior margin at base. Distal segment of aedeagus moderately elongate, weakly expanding towards apex; with long, straight anterior process, one hornshaped apical and one angular apico-posterior tubercles; lateral lobes long, strongly dilated towards apex which is concave. — Female. Proctiger cuneate, pointed apically; dorsal margin, in profile, slightly convex, with subapical indentation; densely covered with long setae. Subgenital plate cuneate, with short apical process; densely covered with long setae, dorsal margin with a row of bristles. Host-plant. Lycium cf. chilense Bertero (Solanaceae).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4787494FC60DB2FA11F917.taxon	distribution	Distribution. Reported as Russelliana sp. cf. adunca from Argentina (Mendoza) (Burckhardt 2008 b). Material examined. Argentina (Jujuy, Mendoza), Bolivia (Chuquisaca, La Paz), Chile (IV – V Regions). Derivation of name. Anagram of adunca, a species to which it closely resembles.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4787494FC60DB2FA11F917.taxon	discussion	Comments. Two female specimens from Bolivia (Department Chuquisaca), previously assigned to Russelliana adunca (Burckhardt 1987; Serbina et al. 2015) belong to R. caunda sp. nov. Some specimens from Argentina (1 ♂, 11 ♀, Province Mendoza, Mendoza Valley, Uspallata to Potrerillos; 1 ♂, same but Potrerillos, 1500 m; 1 ♂, 7 ♀, same but 1300 m; 7 ♂, 11 ♀, same but km 18 Mendoza to Villa Vicencia) and Chile (1 ♂, 1 ♀, IV Region, Province Elqui, Panamericana km 550, 85 km N La Serena, Nolana cf. sedifolia; 1 ♂, same but ca 40 km E La Serena; 10 ♂, 7 ♀, 5 immatures, V Region, Province San Felipe de Aconcagua, Putaendo, 10 km N San Felipe; 1 ♂, same but Termas de Jahuel) reported as R. solanicola by Serbina et al. (2015) also belong to R. caunda sp. nov. The female specimens from Chile (1 ♀, IV Region, Province Elqui, Panamericana km 550; 1 ♀, V Region, Province Petorca, La Viña to Alicahue) assigned to Russelliana disparilis in Syfert et al. (2017) belong to R. caunda sp. nov. Russelliana caunda resembles R. adunca, brevigenis and didyma; see comments under R. adunca. R. caunda differs from R. brevigenis and didyma in a short median hump of the paramere, from R. brevigenis in long genal processes and longer setae on the female terminalia, and from R. didyma in the presence of surface spinules in the apical part of the forewing, a long apico-posterior lobe of the paramere with a strongly constricted base, a relatively straight anterior process of the distal segment of the aedeagus, and a relatively stout apex of the female terminalia.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B46874A4FC609D1FCA7F8CD.taxon	materials_examined	Material examined. Type material. Holotype ♂: Chile: VIII Region, Province Ñuble, Las Trancas, 1 550 m, 12 – 13. xii. 1983 (L. E. Peña) (MHNG, dry). Paratype: Chile: 1 ♂, same as holotype (L. E. Peña) (MHNG, dry, on slide). Additional material. Chile: 1 ♀, same as holotype but Refugio Las Cabras, 1560 m, 16. ii. 1967 (E. I. Schlinger) (CASC, dry); 9 ♂, 9 ♀, IX Region, Province Cautín, Parque Nacional Conguillío, North entrance, 1100 m, 30. i. 1996, Adesmia sp., Nothofagus dombeyi / Araucaria forest and open patches with lava flows (D. Burckhardt) # 64 (2) (MHNG, NHMB, dry, 70 % ethanol); 7 ♂, 9 ♀, 1?, same but Province Malleco, Malalcahuello, Las Nalcas, 8. iii. 1989 (T. Cekalovic) (MHNG, NHMB, dry); 67 ♂, 184 ♀, same but S Valle, Lonquimay, Curacautín, 1800 m, 29 – 30. i. 1991 (L. E. Peña) (BMNH, NHMB, dry, on slide, 70 % ethanol).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B46874A4FC609D1FCA7F8CD.taxon	description	Description. Coloration. Head including genal processes brown to dark brown, vertex pale yellow with variable orange to dark brown pattern; clypeus dark brown. Eyes yellow to brown, ocelli red. Antenna yellow, segments 1, 8 – 10 entirely dark brown, segment 2 brownish at base, segment 3 entirely yellow, segments 4 – 7 with brown apices, segment 6 only a little darker apically. Pronotum pale yellow with orange to brown patch in the middle, sometimes entirely dark brown; mesopraescutum pale yellow with two orange to brown patches along the fore margin and two orange to brown transverse stripes posteriorly; mesoscutum pale yellow with four broad and, in the middle, one narrow orange to brown longitudinal stripes; mesoscutellum pale yellow along the margin, brown in the middle. Metanotum orange to brown. Forewing with yellow to brown veins and yellowish membrane with variable brown pattern consisting of broad stripe parallel to apical margin stretching from apical part of costal vein to apex of vein Cu 1 a, leaving light areas in cells r 2, m 1 and m 2 along the margin, and patches at bifurcation of veins R and M + Cu, in apical part of cell r 2 and along vein Cu 1 b, sometimes forming stripe in the middle of wing stretching from apical part of cell r 1 to vein Cu 1 b; sometimes with patches in cells c + sc and cu 2. Legs yellow to brownish with darker femora and distal tarsal segments, meracanthus of metacoxa yellow to orange. Abdomen and terminalia brown to black. Structure. Head, in profile, moderately to strongly inclined from longitudinal axis of body (45 – 90 °). Vertex subtrapezoidal, anteriorly produced into transverse tubercle on either side of mid-line, with raised hind margin around lateral ocelli, covered with microscopical setae; genal processes conical, slender, subacute apically, shorter than vertex, covered with moderately long setae. Pronotum with two pronounced lateral tubercles on either side. Thorax strongly arched dorsally. Forewing oblong-oval, broadly, unevenly rounded apically; vein C + Sc hardly curved, pterostigma long, vein Rs straight apically; vein M slightly longer than either of veins M 1 + 2 and M 3 + 4; surface spinules relatively large, dense, present in all cells, leaving no spinule-free stripes along the veins, forming hexagonal pattern; absent at base of cell c + sc; radular spinules not pronounced. Metatibia with 7 apical spurs. Terminalia. Male. Proctiger tubular; densely covered with moderately long setae. Subgenital plate short, subglobular; with densely spaced moderately long setae. Paramere broadly lamellar; with short apico-anterior process lacking pedicel, median hump with apically sclerotised median tooth, and apico-posterior lobe distinctly bulged posteriorly; process and hump of subequal length, distinctly longer than lobe; outer face sparsely covered with moderately long setae mostly in posterior part, inner face densely covered with moderately long setae. Distal segment of aedeagus elongate, weakly expanding towards apex; with long anterior process and two small apicoposterior tubercles; lateral lobes long, dilated towards apex which is concave. — Female. Proctiger cuneate, pointed apically; dorsal margin, in profile, almost straight; densely covered with moderately long setae in apical half. Subgenital plate cuneate, with moderately long apical process; densely covered with moderately long setae in apical part, dorsal margin with few bristles. Host-plant. Adults were collected on Adesmia sp. (Fabaceae) which is a likely host.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B46874A4FC609D1FCA7F8CD.taxon	distribution	Distribution. Reported from Chile (VIII Region) (Burckhardt 1987). Material examined. Chile (VIII – IX Regions).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B46874A4FC609D1FCA7F8CD.taxon	discussion	Comments. Description for the female is given for the first time. Russelliana chilensis resembles R. magellanica in a forewing membrane with a brown pattern, in a broadly lamellar paramere bearing a short apico-anterior process lacking a pedicel, a small median hump and an apicoposterior lobe, in a distal segment of the aedeagus bearing a long anterior process, two apico-posterior tubercles and long lateral lobes dilated towards apex, and in a cuneate female proctiger and cuneate subgenital plate bearing a short apical process. R. chilensis differs from R. magellanica in a shape of the forewing which is broadest in the apical third, a less extensive pattern which is mostly restricted to the apical part of the wing, and an apico-posterior lobe of the paramere which is strongly bulged posteriorly.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B44874B4FC60FAAFBEAF857.taxon	materials_examined	Material examined. Holotype ♂: Chile: V Region, Province San Felipe de Aconcagua, Putaendo, 8 km N San Felipe, 700 m, 12 – 13. i. 1997, Chorizanthe sp., dry river bed of Río Aconcagua, quebrada vegetation (D. Burckhardt) # 4 (2) (NHMB, dry). Paratypes: Chile: 4 ♂, 14 ♀, 1?, V Region, Province San Felipe de Aconcagua, Putaendo, 10 km N San Felipe, 700 m, 15. xii. 1995, river bed, quebrada vegetation (D. Burckhardt) # 1 (BMNH, MHNG, NHMB, dry); 16 ♂, 28 ♀, 9 immatures, 1?, same but 27. xii. 1995, Chorizanthe sp. (D. Burckhardt) # 27 (3) (MHNG, NHMB, dry, on slide, 70 % ethanol); 1 ♂, 6 ♀, 1 immature, same as holotype (D. Burckhardt) # 4 (2) (NHMB, dry); 2 ♂, 3 ♀, same but El Asiento, 10 km NW San Felipe, 900 m, 13 – 20. i. 1997, Chorizanthe sp., mediterranean scrub (D. Burckhardt) # 54 (MHNG, 70 % ethanol).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B44874B4FC60FAAFBEAF857.taxon	description	Description. Coloration. Head including genal processes pale yellow to orange; clypeus orange to brown. Eyes yellow to brown, ocelli red. Antenna yellow to brownish, segments 4 – 8 with dark brown apices, sometimes segment 8 entirely brown, segments 9 – 10 entirely dark brown. Pronotum pale yellow to orange, sometimes orange in the middle; mesopraescutum pale yellow to orange, often with two dark orange patches along the fore margin and sometimes with two pale orange patches posteriorly; mesoscutum pale yellow with four broad orange longitudinal stripes; mesoscutellum pale yellow along the margin, yellow to orange in the middle. Metanotum yellow to orange. Forewing with whitish to pale yellow veins, gradually becoming brown towards apical part, and whitish membrane with indistinct pale brown patch along vein Cu 1 b, sometimes yellowish in apical part and slightly brownish at apices of veins Rs, M 1 + 2, M 3 + 4 and Cu 1 a. Legs yellow to orange, distal tarsal segments darker, meracanthus of metacoxa pale yellow to orange. Abdomen and terminalia orange to brown, sometimes entirely yellow. Female terminalia darker in apical third. Structure. Head, in profile, moderately to strongly inclined from longitudinal body axis (45 – 90 °). Vertex subtrapezoidal with indented foveae, anteriorly slightly produced into transverse tubercle on either side of midline, with slightly raised hind margin around lateral ocelli, covered with short setae; genal processes, conical, slender, subacute or slightly blunt apically, distinctly shorter than vertex, covered with short setae. Forewing oblong-oval, narrowly rounded apically; vein C + Sc weakly curved, pterostigma long, vein Rs almost straight apically; vein M about as long as either of veins M 1 + 2 and M 3 + 4; surface spinules very faint, present in all cells, leaving no spinule-free stripes along the veins, densely and irregularly spaced; radular spinules covering triangular areas along the margin of cells r 2, m 1, m 2 and cu 1. Metatibia with 5 – 7 apical spurs. Terminalia. Male. Proctiger tubular; sparsely covered with moderately long setae in apical two thirds. Subgenital plate short, subglobular; with sparsely spaced moderately long setae restricted to median part. Paramere broadly lamellar, slightly curved with median convexity apically; with short apico-anterior process on pedicel, apically sclerotised median tooth and posteriorly concave lobe; outer face sparsely covered with moderately long setae, inner face densely, evenly covered with moderately long setae. Distal segment of aedeagus elongate, weakly expanding towards apex; with long anterior process, one apical and one apico-posterior tubercles; lateral lobes moderately long, dilated towards apex which is concave. — Female. Proctiger cuneate, relatively blunt or subacute apically; dorsal margin, in profile, slightly curved, with subapical indentation; densely covered with short setae in apical half. Subgenital plate cuneate, with moderately long apical process; sparsely covered with moderately long setae, dorsal margin with a bristle. Host-plant. Chorizanthe sp. (Polygonaceae).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B44874B4FC60FAAFBEAF857.taxon	distribution	Distribution. Chile (V Region). Derivation of name. Named after its host-plant Chorizanthe.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B44874B4FC60FAAFBEAF857.taxon	discussion	Comments. Russelliana chorizanthis resembles R. disparilis, nigra, rutila, similis and solanicola, in a irregularly subtrapezoidal paramere bearing an apico-anterior process on a pedicel and a median tooth, in a distal segment of the aedeagus bearing an anterior process, two tubercles and long lateral lobes dilated towards apex, in a cuneate female proctiger and cuneate subgenital plate bearing a short apical process. R. chorizanthis differs from the five species in an elongate female terminalia. It differs from R. disparilis and nigra in the presence of a median convexity of the apical margin of the paramere, from R. disparilis and similis in the presence of surface spinules in the apical part of the forewing membrane, from R. nigra and rutila in a colourless forewing membrane, and from R. disparilis in an apically subacute anterior process of the distal segment of the aedaegus.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4B87454FC60FAAFDBAFD35.taxon	materials_examined	Material examined. Holotype ♂: Chile: IV Region, Province Limarí, Parque Nacional Fray Jorge, Quebrada La Vaca, 30 ° 40 ' S 71 ° 40 ' W, 100 – 200 m, 15 – 17. xii. 1992, Lycium chilense, mediterranean scrub (D. Burckhardt) # 27 (MHNG, dry). Paratypes: Argentina: 1 ♀, Province Catamarca, San Fernando, NE Tinogasta, 4. xi. 1991, Prosopis sp. (L. E. Peña) (NHMB, 70 % ethanol); 2 ♀, Province La Rioja, Guandacol, 1 – 3. xii. 1983 (L. E. Peña) (MHNG, dry); 2 ♂, 2 ♀, Province Mendoza, Santa Rosa, Ñacuñán, 8. viii. 1996, Atamisquea emarginata [Capparis atamisquea] (G. Debandi) (NHMB, dry); 3 ♂, 4 ♀, 1 immature, same but Mendoza Valley, Potrerillos to Cacheuta, 1200 m, 17. i. 1997, Lycium sp., low scrub (D. Burckhardt) # 10 (3) (MHNG, on slide, 70 % ethanol); 1 ♂, 8 immatures, same but Lycium sp. / Verbena sp. (D. Burckhardt) # 10 (4) (MHNG, 70 % ethanol); 45 ♂, 55 ♀, same but Potrerillos, 1300 m, Lycium sp., steppe with shrubs (D. Burckhardt) # 11 (1) (MHNG, 70 % ethanol); 5 ♂, 11 ♀, same but km 18 Mendoza to Villa Vicencia, 700 m, 18. i. 1997, Lycium sp., pampa (D. Burckhardt) # 13 (3, 4) (MHNG, 70 % ethanol, on slide); 1 ♂, 2 ♀, 1?, same but Zoológico, vii. 1997 (S. Roig) (NHMB, dry); 9 ♂, 27 ♀, Province San Juan, La Ciénaga, 6. iii. 1992 (L. E. Peña) (NHMB, on slide, 70 % ethanol). Chile: 6 ♂, 2 ♀, 1 immature, IV Region, Province Limarí, Parque Nacional Fray Jorge, 250 m, 7 – 9. xii. 1990, Lycium chilense, open mediterranean scrub (D. Agosti & D. Burckhardt) # 2 (MHNG, NHMB, dry, on slide); 9 ♂, 9 ♀, 1?, same as holotype (D. Burckhardt) # 27 (BMNH, MHNG, NHMB, dry).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4B87454FC60FAAFDBAFD35.taxon	description	Description. Coloration. Head including genal processes pale yellow, vertex pale yellow along the margin, yellowish to orange in the middle; clypeus yellow to dark brown. Eyes pale yellow to brown, ocelli orange to red. Antenna yellow to brownish, segments 3 – 8 with dark brown apices, segments 9 – 10 entirely dark brown. Pronotum pale yellow and distinctly paler than mesonotum, often with yellow dot in the middle; mesopraescutum pale yellow, often with two big orange patches along the fore margin and two orange patches posteriorly; mesoscutum pale yellow, often with four broad and, in the middle, one narrow orange longitudinal stripes; mesoscutellum pale yellow along the margin, often orange in the middle. Metanotum yellow to orange. Forewing with pale yellow veins and colourless to yellowish membrane with indistinct brown patch along vein Cu 1 b, sometimes with indistinct brownish shadows in apical part of cells r 1, r 2, m 1, m 2 and cu 1 and at base of cell m 2. Legs pale yellow to brownish, sometimes with darker femora, meracanthus of metacoxa pale yellow. Abdomen yellow to brown; terminalia pale yellow to orange. Male proctiger and paramere slightly darker apically. Female terminalia lighter ventrally, with dark apex. Structure. Head, in profile, strongly inclined from longitudinal body axis (> 45 °). Vertex subtrapezoidal with indented foveae, anteriorly produced into transverse tubercle on either side of mid-line, with slightly raised hind margin around lateral ocelli, covered with short setae; genal processes conical, slender, subacute apically, distinctly shorter than vertex, covered with moderately long setae. Forewing oval, broadly, evenly rounded apically; vein C + Sc weakly curved, pterostigma long, vein Rs weakly sinuous, slightly curved to fore margin apically; vein M about as long as either of veins M 1 + 2 and M 3 + 4; surface spinules absent; radular spinules covering triangular areas along the margin of cells r 2, m 1, m 2 and cu 1. Metatibia with 7 – 8 apical spurs. Terminalia. Male. Proctiger tubular; sparsely covered with moderately long setae. Subgenital plate short, subglobular; with sparsely spaced long setae. Paramere irregularly subtrapezoidal; with apico-anterior process on long pedicel, long median, slightly recurved median hump with apically sclerotised tooth, and small apicoposterior lobe; both process and lobe of subequal length and distinctly shorter than hump; outer face sparsely covered with moderately long setae mostly in apical part, inner face sparsely covered with moderately long setae and with few longer setae along anterior margin at base. Distal segment of aedeagus moderately elongate; with long hook-shaped anterior process, one small, raised apical and one small apico-posterior tubercles; lateral lobes long, dilated towards apex which is concave. — Female. Proctiger cuneate, pointed apically; dorsal margin, in profile, almost straight to weakly sinuous; densely covered with long setae. Subgenital plate cuneate, with short apical process; sparsely covered with long setae, dorsal margin with a row of bristles. Host-plant. Lycium chilense Bertero (Solanaceae).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4B87454FC60FAAFDBAFD35.taxon	distribution	Distribution. Argentina (Catamarca, La Rioja, Mendoza, San Juan), Chile (IV Region). Derivation of name. From Latin didymus = twin for its close resemblence to Russelliana adunca, brevigenis and caunda.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4B87454FC60FAAFDBAFD35.taxon	discussion	Comments. Some specimens from Argentina (45 ♂, 55 ♀, Province Mendoza, Mendoza Valley, Potrerillos; 5 ♂, 11 ♀, same but km 18 Mendoza to Villa Vicencia; 9 ♂, 27 ♀, Province San Juan) previously assigned to Russelliana solanicola in Serbina et al. (2015) belong to R. didyma sp. nov. The female specimens from Argentina (2 ♀, Province La Rioja, Guandacol) assigned to Russelliana disparilis in Syfert et al. (2017) belong to R. didyma sp. nov. Russelliana didyma resembles R. adunca, brevigenis and caunda; see comments under R. adunca. R. didyma differs from the three species in a very short apico-posterior lobe of the paramere, a hook-shaped anterior process of the distal segment of the aedaegus, and in a narrow apex of the female proctiger. It differs from R. adunca and brevigenis in longer setae on the female terminalia, from R. brevigenis and caunda in the absence of surface spinules in the apical part of the forewing, from R. brevigenis in long genal processes, and from R. caunda in a longer median hump of the paramere.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4A87464FC60DEAFE3EFC86.taxon	materials_examined	Material examined. Holotype ♂: Argentina: Province Mendoza, Mendoza Valley, Uspallata to Potrerillos, 1700 m, 30 – 31. xii. 1995, Lycium sp., scrub (D. Burckhardt) # 30 (1) (MHNG, dry). Paratypes: Argentina: 12 ♂, 17 ♀, 4 immatures, same as holotype (D. Burckhardt) # 30 (1) (MHNG, NHMB, dry, on slide, 70 % ethanol).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4A87464FC60DEAFE3EFC86.taxon	description	Description. Coloration. Dimorphic, male slightly darker, general body colour yellow to brownish; female slightly lighter, general body colour yellow, forewing pattern paler than in males. Head whitish to bright yellow, genal processes usually lighter than head and thorax, genae yellow to brown; vertex yellow with bright yellow pattern; clypeus yellow to brown. Eyes yellow to dark brown, ocelli orange to red. Antenna yellow, sometines segments 1 – 2 orange, segments 3 – 8 with dark brown apices, segments 9 – 10 entirely dark brown. Pronotum pale to bright yellow; mesopraescutum pale to bright yellow with two yellow to orange patches along the fore margin and sometimes with two yellow to orange patches posteriorly; mesoscutum pale to bright yellow with four broad yellow to orange longitudinal stripes; mesoscutellum pale to bright yellow. Metanotum pale to bright yellow. Forewing with whitish to dark brown veins and membrane with distinct pale to dark brown pattern differring in males and females. Male forewing membrane with brown to dark brown pattern consisting of two broad transverse stripes: submarginal one stretching from apical part of costal vein to median part of cell cu 1 leaving light areas in cells r 2, m 1, m 2 and cu 1 along the margin, and median one stretching from median part of vein C + Sc to apical part of claval suture; membrane between two bands colourless with sparse dark brown dots scattered over entire surface and sometimes on veins. Female forewing membrane with pale brown pattern consisting of dots occupying all cells, partly confluent in apical part and broad stripe parallel to apical margin stretching from apical part of costal vein to median part of cell cu 1 leaving light areas in cells r 2, m 1, m 2 and cu 1 along the margin. Legs yellow to brownish with darker femora, meracanthus of metacoxa pale to bright yellow. Abdomen yellow to brown; terminalia yellow to orange. Female terminalia with dark apex. Structure. Head, in profile, weakly inclined from longitudinal body axis (<45 °). Vertex trapezoidal, flat with indented foveae, anteriorly produced into transverse lobe on either side of mid-line, with slightly raised hind margin around lateral ocelli, covered with microscopical setae; genal processes short, swollen, slightly conical apically, covered with short setae. Pronotum with two pronounced lateral and one relatively shallow sublateral tubercles on either side. Forewing rhomboidal; vein C + Sc strongly, unevenly curved, pterostigma long, vein Rs almost straight, strongly curved to fore margin apically; vein M slightly longer than either of veins M 1 + 2 and M 3 + 4; male forewing with large, very dense surface spinules, present in all cells, leaving no spinule-free stripes along the veins, irregularly spaced on pigmented areas, weakly developed on unpigmented areas and absent in the middle of the wing; female forewing with very dense surface spinules, present in all cells, leaving no spinule-free stripes along the veins, irregularly spaced, less developed on unpigmented areas; radular spinules not pronounced. Metatibia with 6 apical spurs. Terminalia. Male. Proctiger tubular; sparsely covered with moderately long setae. Subgenital plate elongate; with sparsely spaced moderately long setae. Paramere narrowly lamellar; with recurved apico-anterior process on pedicel, and long apico-posterior lobe with inwards directed sclerotised anterior tooth situated at base of the lobe; lobe more than twice longer than process; outer face covered with moderately long setae mostly in apical half, inner face densely covered with moderately long setae. Distal segment of aedeagus moderately elongate, broadly, evenly expanding towards apex; lateral lobes moderately long, slightly dilated towards apex which is rounded and with frayed margin. — Female. Proctiger cuneate, pointed apically; dorsal margin, in profile, convex; densely covered with moderately long setae. Subgenital plate subglobular, with tiny apical process; densely covered with moderately long setae and with long setae in ventral part, dorsal margin with a row of bristles. Host-plant. Lycium sp. (Solanaceae).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4A87464FC60DEAFE3EFC86.taxon	distribution	Distribution. Reported as Russelliana sp. cf. lycii from Argentina (Mendoza) (Burckhardt 2008 b). Derivation of name. From Ancient Greek δι- = two and µορφή = shape, form, figure referring to the strong sexual dimorphism of the species.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4A87464FC60DEAFE3EFC86.taxon	discussion	Comments. Russelliana dimorpha resembles R. capsici and lycii; see comments under R. capsici. R. dimorpha differs from the two species in longer setae on the female subgenital plate. It differs from R. capsici in the presence of sexual dimorphism, and from R. lycii in a recurved apico-anterior process of the paramere and a subgenital plate bearing an apical process.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4987474FC60CB1FA05FD42.taxon	materials_examined	Material examined. Type material. Holotype ♂: Chile: VII Region, Province Talca, Parque Gil de Vilches, sendero El Enladrillado, El Venado Valley, 1350 – 1700 m, 14. i. 1996, Dipyrena juncea [Diostea juncea] (D. Burckhardt) # 45 (1) (MHNG, on slide). Paratype: Chile: 1 ♀, same as holotype (D. Burckhardt) # 45 (1) (MHNG, on slide).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4987474FC60CB1FA05FD42.taxon	description	Description. Coloration. Head yellowish to greyish, ventrally whitish, genal processes white, black at base, vertex with two dark dots on either side of mid-line; clypeus dark brown. Antenna ochreous with tips of segments 4 – 7 brown getting darker towards apex, segments 8 – 10 entirely dark brown to black. Pronotom with four dark dots; mesopraescutum orange anteriorly; mesoscutum with brown longitudinal stripes; mesoscutellum with dark dot in the middle. Metanotum dark brown. Forewing with yellow veins and colourless membrane with brown pattern, consisting of patch along vein Cu 1 b and two well-defined oblique stripes: submarginal one stretching from apical part of costal vein to base of vein Cu 1 a leaving light areas in cells r 2, m 1 and m 2 along the margin, and median one stretching from apical part of cell r 1 to median part of anal vein. Legs with femora and distal tarsal segments dark brown, tibiae and basal tarsal segments ochreous. Abdomen dark brown. Female with slightly lighter vertex and thoracic dorsum. Structure. Head, in profile, strongly inclined from longitudinal body axis (> 45 °). Vertex subtrapezoidal, flat with indented foveae, anteriorly produced into transverse lobe on either side of mid-line, hind margin around lateral ocelli not raised, covered with microscopical setae; genal processes conical, slender, subacute apically, distinctly shorter than vertex, covered with long setae. Pronotum bearing two pronounced lateral tubercles on either side. Forewing oblong-oval, broadly, unevenly rounded apically; veins bearing short microscopical setae; vein C + Sc strongly, unevenly curved, pterostigma short, vein Rs almost straight apically; vein M longer than either of veins M 1 + 2 and M 3 + 4; surface spinules present in all cells, leaving no spinule-free stripes along the veins, densely spaced and forming irregular, indistinct hexagons in apical half, very sparse on unpigmented areas; absent at base of cell c + sc; radular spinules weakly pronounced. Metatibia with 5 – 6 apical spurs. Terminalia. Male. Proctiger tubular; sparsely covered with moderately long setae. Subgenital plate elongate; with sparsely spaced moderately long setae. Paramere narrowly lamellar; with thumb-like apico-anterior process on pedicel and long apico-posterior lobe, irregularly rounded apically, with inwards directed sclerotised anterior tooth situated at base of the lobe; lobe distinctly longer than process; outer face densely covered with moderately long setae in apical half, inner face relatively densely covered with moderately long setae and with long thick bristles apically and in basal third. Distal segment of aedeagus massive, broadly, unevenly expanding towards apex, inflated anteriorly; with one horn-shaped apico-posterior tubercle; lateral lobes moderately long, with frayed apical margin. — Female. Proctiger subglobular, subacute apically; dorsal margin, in profile, convex, bent downwards; densely covered with short setae in apical part and with moderately long setae. Subgenital plate subglobular, rounded apically; densely covered with moderately long setae in ventral part. Host-plant. Dipyrena juncea (Gillies & Hook.) Ravenna (Verbenaceae).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4987474FC60CB1FA05FD42.taxon	distribution	Distribution. Reported from Chile (VII Region) (Burckhardt 2008 a).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4987474FC60CB1FA05FD42.taxon	discussion	Comments. Russelliana diosteae resembles R. bulbosa and sebastiani; see comments under R. bulbosa. R. diosteae differs from the two species in a forewing which is broadly, unevenly rounded apically, and a distal segment of the aedeagus bearing a horn-shaped apico-posterior tubercle. R. diosteae differs from R. bulbosa in a longer antenna, a forewing with a brown pattern, a shorter pterostigma, a paramere bearing an apico-anterior process distinctly shorter than an apico-posterior lobe, and a female subgenital plate rounded apically and lacking an apical process. It differs from R. sebastiani in slender longer genal processes, a broad forewing with a different, less extensive brown pattern in its basal third and a shorter cell m 1, a paramere bearing a thumb-like apico-anterior process and a broad apico-posterior lobe, and a distal segment of the aedeagus being strongly inflated anteriorly.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4887404FC60C7BFE06FC89.taxon	materials_examined	Material examined. Additional material. Bolivia: 10 ♂, 9 ♀, 6 immatures, Department Chuquisaca, Province Nor Cinti, Padcoya to Camargo, 2800 – 3200 m, 26 – 28. xii. 1984 (L. E. Peña) (MHNG, dry, on slide); 2 ♂, 5 ♀, same but Lecori, S. Potosi, 3200 m, 26 – 27. xii. 1984 (L. E. Peña) (NHMB, dry, on slide).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4887404FC60C7BFE06FC89.taxon	description	Description. Coloration. Head including genal processes pale to bright yellow, genal processes often with dark tips, genae brown to black, vertex sometimes with yellow to brownish pattern; clypeus dark brown. Eyes yellow to brown, ocelli orange. Antenna yellow to brownish, segments 3 – 8 with brown apices, segments 9 – 10 entirely dark brown. Pronotum pale yellow, with brown spots on either side and yellow to brown spot in the middle; mesopraescutum pale yellow, with two orange patches along the fore margin and two orange to brown transverse stripes posteriorly; mesoscutum pale yellow, with four broad and, in the middle, one narrow, orange longitudinal stripes; mesoscutellum pale yellow along the margin, yellow to orange in the middle. Metanotum yellow to dark brown. Forewing with brown veins and colourless membrane, fumose in the middle of cells in apical half and with indistinct brown patch along vein Cu 1 b; sometimes brownish in apical part of cell cu 2. Legs pale to dirty yellow, sometimes with slightly darker femora and distal tarsal segments, meracanthus of metacoxa yellow. Abdomen and terminalia dirty yellow to dark brown. Female proctiger dark in apical third, subgenital plate with dark apex. Females often slightly lighter with ventrally lighter abdomen. Structure. Head, in profile, moderately to strongly inclined from longitudinal body axis (45 – 90 °). Vertex subtrapezoidal with indented foveae, anteriorly produced into transverse tubercle on either side of mid-line, with raised hind margin around lateral ocelli, covered with short setae; genal processes conical, slender, subacute apically, shorter than vertex, covered with long setae. Pronotum with two lateral tubercles on either side, one relatively pronounced and the other relatively shallow. Forewing oval, broadly, evenly rounded apically; vein C + Sc weakly curved, pterostigma long, vein Rs sinuous, almost straight apically; vein M about as long as either of veins M 1 + 2 and M 3 + 4; surface spinules absent; radular spinules covering triangular areas along the margin of cells r 2, m 1, m 2 and cu 1. Metatibia with 8 – 9 apical spurs. Terminalia. Male. Proctiger tubular; sparsely covered with moderately long setae in apical half. Subgenital plate short, subglobular; with sparsely spaced moderately long setae. Paramere irregularly subtrapezoidal; with long sickle-shaped apico-anterior process on short pedicel and long, bulged apico-posterior lobe, broadly rounded apically, with apically sclerotised median tooth; lobe distinctly longer than process; outer face sparsely covered with moderately long setae mostly in posterior part, inner face densely covered with relatively short setae apically and with long setae in basal half. Distal segment of aedeagus moderately elongate, weakly expanding towards apex; with blunt anterior process, one apical tubercle and one apico-posterior tubercle which is curved forward; lateral lobes long, dilated towards apex which is concave. — Female. Proctiger cuneate, pointed apically; dorsal margin, in profile, almost straight, slightly convex; sparsely covered with moderately long setae. Subgenital plate cuneate, with short apical process; sparsely covered with moderately long setae in apical half, dorsal margin with a row of bristles. Host-plant. Dunalia sp. (Solanaceae).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4887404FC60C7BFE06FC89.taxon	distribution	Distribution. Reported from Peru (holotype ♂ from Cusco, 13. vi. 1959, Dunalia sp. (USNM, dry), not examined here; Tuthill 1964) and Bolivia (Chuquisaca) (Burckhardt 1987).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4887404FC60C7BFE06FC89.taxon	discussion	Comments. The female specimens from Argentina (2 ♀, Province La Rioja, Guandacol) assigned to R. disparilis in Syfert et al. (2017) belong to Russelliana didyma sp. nov. The female specimens from Chile (1 ♀, IV Region, Province Elqui, Panamericana km 550; 1 ♀, V Region, Province Petorca, La Viña to Alicahue) assigned to R. disparilis in Syfert et al. (2017) belong to Russelliana caunda sp. nov. Russelliana disparilis resembles R. chorizanthis, nigra, rutila, similis and solanicola; see comments under R. chorizanthis. R. disparilis differs from the five species in a strongly bulged apico-poterior lobe of the paramere, and a blunt anterior process of the distal segment of the aedaegus. It differs from R. chorizanthis, nigra, rutila and solanicola in the absence of surface spinules in the apical part of the forewing, from R. chorizanthis, rutila, similis and solanicola in the absence of a median hump of the paramere, and from R. nigra and rutila in a colourless forewing membrane.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4F87424FC60CBCFE72F9EF.taxon	materials_examined	Material examined. Type material. Holotype ♂: Chile: VII Region, Province Talca, Alto Vilches, 6. x. 1983 (L. E. Peña) (MHNG, dry). Paratypes: Argentina: 1 ♂, 1 ♀, Province Río Negro, El Bolsón, 680 m, 22. iv. 1961 (G. Topál) (MHNG, on slide); 8 ♂, 7 ♀, same but 360 m, 4. xi. 1961 (G. Topál) (MHNG, dry, on slide). Chile: 1 ♀, same as holotype (L. E. Peña) (MHNG, dry). Additional material. Chile: 4 ♂, 16 ♀, IV Region, Province Elqui, Nueva Elqui to La Laguna, ca 115 km E La Serena, 2600 m, 17. xii. 1995, Fabiana imbricata, scattered shrubs (D. Burckhardt) # 5 (2) (MHNG, dry, 70 % ethanol); 5 ♂, 5 ♀, same but La Laguna, ca 120 km E La Serena, 2800 – 3000 m, Fabiana imbricata (D. Burckhardt) # 4 (2) (MHNG, NHMB, dry); 1 ♂, 3 ♀, V Region, Province San Felipe de Aconcagua, Resguardo de Los Patos, 32 ° 29.2 ' S 70 ° 33.9 ' W, 1350 m, 6. iii. 2009, Fabiana imbricata, Acacia caven scrub (D. Burckhardt) # 14 (1) (NHMB, dry); 3 ♂, 10 ♀, 1 immature, VII Region, Province Talca, Vilches, 35 ° 36 ' S 71 ° 12 ' W, 1200 m, 25. xi. 1992, Fabiana imbricata, mixed Nothogagus forest (D. Burckhardt) # 15 (NHMB, dry); 2 ♂, 6 ♀, same but Armerillo to Las Garzas, Maule Valley, 60 – 80 km E Talca, 35 ° 45 ' S 71 ° 00 ' W, 700 m, Fabiana imbricata, degraded sclerophyll forest and scrub (D. Burckhardt) # 14 (NHMB, dry); 1 ♂, 2 ♀, 1 immature, same but 15 km E San Clemente, 35 ° 33 ' S 71 ° 20 ' W, 400 m, 4. i. 1994, Fabiana imbricata, sclerophyll scrub mixed with pasture (D. Burckhardt) # 46 (MHNG, NHMB, dry); 24 ♂, 18 ♀, same but Parque Gil de Vilches, Monumento Natural, 35 ° 35 ' S 71 ° 04 ' W, 1100 m, 4 – 5. i. 1994, Fabiana imbricata, mixed Nothofagus forest (D. Burckhardt) # 47 (MHNG, dry); 1 ♀, same but sector Piedras blancas, 1350 – 1600 m, 12. i. 1996, Baccharis sp. (D. Burckhardt) # 43 (7) (MHNG, dry); 3 ♂, 5 ♀, same but Fabiana imbricata (D. Burckhardt) # 43 (1) (MHNG, dry); 7 ♂, 15 ♀, 2 immature skins, same but sector Majadilla, 1350 – 1550 m, 13. i. 1996, Fabiana imbricata, deciduous and evergreen Nothofagus forests (D. Burckhardt) # 44 (1) (MHNG, dry, 70 % ethanol); 11 ♂, 13 ♀, same but sendero El Enladrillado, El Venado Valley, 1350 – 1700 m, 14. i. 1996, Fabiana imbricata, mixed Nothofagus forest (D. Burckhardt) # 45 (2) (MHNG, dry, 70 % ethanol); 1 ♀, 1?, VIII Region, Province Bío-Bío, 21 km E of Villa Mercedes, 530 m, 21. xi. 1981 (R. T. Schuh & N. I. Platnick) (NHMB, dry); 8 ♂, 31 ♀, same but Parque Nacional Laguna del Laja, sector Chacay, 1200 m, 19. i. 1996, Fabiana imbricata, Austrocedrus forest and open sclerophyll scrub (D. Burckhardt) # 53 (2) (MHNG, NHMB, dry, 70 % ethanol); 1 ♂, 7 ♀, same but sector Lagunillas, 1100 m, 21. i. 1996, Fabiana imbricata (D. Burckhardt) # 56 (2) (MHNG, NHMB, dry); 1 ♂, 3 ♀, same but sector Saltos de Chilcas and del Torbellino, Fabiana imbricata (D. Burckhardt) # 57 (3) (NHMB, dry); 6 ♂, 26 ♀, 3 immatures, 1 immature skin, same but outside Parque Nacional Laguna del Laja, Park entrance to El Abanico, 900 – 1100 m, 22. i. 1996, Fabiana imbricata, dense forest along river (D. Burckhardt) # 58 (8) (MHNG, NHMB, dry, 70 % ethanol); 193 ♂, 144 ♀, 59 immatures, same but Province Ñuble, 20 km W Termas de Chillán, 1000 m, 12. xii. 1990, Fabiana imbricata, pasture (D. Agosti & D. Burckhardt) # 6 (MHNG, dry); 6 ♂, 7 ♀, IX Region, Province Malleco, Parque Nacional Nahuelbuta, road from " Administración " to Piedra del Aguila, 37 ° 49 ' S 73 ° 01 ' W, 1200 m, 24 – 25. xii. 1992, Fabiana imbricata, open Nothofagus obliqua / antarctica forest (D. Burckhardt) # 32 (NHMB, dry); 12 ♂, 7 ♀, 3 immature skins, same but Parque Nacional Tolhuaca, sector Laguna Malleco, 900 m, 23 – 27. i. 1996, Fabiana imbricata (D. Burckhardt) # 61 b (9) (NHMB, dry, 70 % ethanol).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4F87424FC60CBCFE72F9EF.taxon	description	Description. Coloration. General colour of body green-yellow to bright yellow. Head including genal processes and clypeus greenish to pale yellow. Eyes pale yellow, ocelli orange. Antenna green to dirty yellow, segments 4 – 8 with brownish apices, segments 9 – 10 entirely dark brown. Thorax greenish to bright yellow; pronotum of the same colour as vertex, distinctly paler than mesonotum; mesopraescutum sometimes with two brownish patches along the fore margin. Forewing with yellow veins and semitransparent, yellowish to brown membrane, usually darker along outer margin. Legs pale yellow to green, with darker femora and distal tarsal segments, meracanthus of metacoxa pale yellow. Abdomen and terminalia green to bright yellow. Female terminalia with dark apex. Structure. Head, in profile, inclined from longitudinal body axis at 45 °. Vertex trapezoidal, flat with indented foveae, anteriorly produced into transverse lobe on either side of mid-line, with slightly raised hind margin around lateral ocelli, covered with microscopical setae; genal processes conical, slender, subacute apically, twice shorter than vertex, covered with short setae. Pronotum with two relatively pronounced lateral tubercles on either side. Forewing oviform; vein C + Sc strongly curved in the middle, pterostigma long, vein Rs straight apically; vein M about as long as either of veins M 1 + 2 and M 3 + 4; surface spinules very dense, present in all cells, leaving no spinulefree stripes along the veins, irregularly spaced; very sparse at base of cell c + sc; radular spinules not pronounced. Metatibia with 7 – 9 apical spurs. Terminalia. Male. Proctiger tubular; sparsely covered with moderately long setae. Subgenital plate relatively elongate; with sparsely spaced moderately long setae. Paramere broadly lamellar; with short apico-anterior process lacking pedicel and apically sclerotised median tooth; outer face with few moderately long setae, inner face densely, evenly covered with moderately long setae. Distal segment of aedeagus clavate, broadly, unevenly expanding towards apex, strongly inflated anteriorly and concave apically; with one horn-shaped apico-posterior tubercle; lateral lobes short, with entire apical margin. — Female. Proctiger cuneate, subacute apically; dorsal margin, in profile, convex, strongly indented subapically; densely covered with long setae. Subgenital plate subglobular, with moderately long apical process; densely covered with moderately long setae in apical half and with long setae along ventral margin, dorsal margin with a row of bristles. Host-plant. Fabiana imbricata Ruiz & Pav. (Solanaceae).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4F87424FC60CBCFE72F9EF.taxon	distribution	Distribution. Reported from Argentina (Chubut, Río Negro), Chile (VII Region) (Burckhardt 1987). Material examined. Argentina (Río Negro), Chile (IV – V, VII – IX Regions).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4F87424FC60CBCFE72F9EF.taxon	discussion	Comments. Russelliana fabianae resembles R. viscosae in a forewing with a yellow membrane, broadest in the middle, with a strongly curved vein C + Sc medially, in a broadly lamellar paramere bearing a short apicoanterior process lacking a pedicel, in an anteriorly strongly inflated distal segment of the aedeagus bearing a hornshaped apico-posterior tubercle and short lateral lobes with an entire apical margin, in a female proctiger with a convex dorsal margin strongly indented subapically, and a subglobular subgenital plate bearing an apical process. R. fabianae differs from R. viscosae in a longer antenna and the presence of surface spinules in all cells of the forewing membrane. Russelliana globosa sp. nov. (Figs 9 B, 12 I, J, 17 H, 22 H, 27 E, 31 G)	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4F87424FC60CBCFE72F9EF.taxon	materials_examined	Material examined. Holotype ♂: Argentina: Province Chubut, South Ameghino dam, 5. xi. 1990 (L. E. Peña) (NHMB, on slide). Paratypes: Argentina: 1 ♂, 4 ♀, same as holotype (L. E. Peña) (NHMB, dry, on slide, 70 % ethanol). Description. Coloration. Dimorphic, male slightly darker, general body colour brown; female slightly lighter, general body colour yellow to brownish, forewing pattern paler than in males. Head including genal processes pale yellow to brownish; clypeus brown. Eyes brown, ocelli pale yellow. Antenna yellow, segments 4 – 8 with dark brown apices, segments 9 – 10 entirely dark brown. Pronotum pale yellow, often dark brown in the middle; mesopraescutum yellow, often with two brownish patches along the fore margin; mesoscutum yellow, often with four broad and, in the middle, one narrow brownish longitudinal stripes; mesoscutellum yellow along the margin, often dark brown in the middle. Metanotum yellow to dark brown. Forewing with whitish to dark brown veins and membrane with distinct pale to dark brown pattern different in males and females. Male forewing membrane with dark brown pattern consisting of confluent dots and patches, stretching from apical part of costal vein to the middle of cell cu 1 forming transverse marginal band leaving light areas in cells r 2, m 1 and m 2, continuing along vein Cu 1 a, stretching from apical part of vein Cu 1 b to median part of vein C + Sc; membrane between bands colourless, with brown dots varying in size and number scattered over entire surface. Female forewing membrane with pale to dark brown pattern consisting of distinct transverse band, leaving light areas in cells r 1, r 2, m 1 and m 2, frequently confluent dots, forming variable, usually lighter patches varying in size and number scattered over entire surface of the wing, and patch along vein Cu 1 b. Legs pale yellow to brownish, sometimes with darker femora, meracanthus of metacoxa pale yellow. Abdomen pale yellow to brown, lighter ventrally. Male terminalia brown. Female terminalia yellow to brown, proctiger dark in apical third, subgenital plate lighter than proctiger. Structure. Head, in profile, weakly inclined from longitudinal body axis (<45 °). Vertex trapezoidal, flat with indented foveae, anteriorly produced into transverse lobe on either side of mid-line, hind margin around lateral ocelli not raised, covered with short setae; genal processes short, swollen, slightly conical apically, covered with short setae. Pronotum with two pronounced lateral and one relatively shallow sublateral tubercles on either side. Forewing rhomboidal; vein C + Sc strongly, unevenly curved, pterostigma long, vein Rs almost straight, strongly curved to fore margin apically; vein M about as long as either of veins M 1 + 2 and M 3 + 4; surface spinules very dense, present in all cells, leaving no spinule-free stripes along the veins, forming transverse rows, less developed on unpigmented areas; radular spinules not pronounced. Metatibia with 6 apical spurs. Terminalia. Male. Proctiger barrel-shaped; sparsely covered with moderately long setae in apical two thirds. Subgenital plate elongate; with sparsely spaced long setae restricted to median part. Paramere shortly lamellar; with long recurved hook-shaped apico-anterior process on pedicel, broadly rounded apico-posterior lobe with apically sclerotised median tooth; lobe situated exterior to process; both process and lobe of subequal length; outer face sparsely covered with moderately long setae mostly in apical half, inner face covered with long thick bristles anteriorly and apically. Distal segment of aedeagus moderately elongate, broadly, evenly expanding towards apex; with one small apico-posterior tubercle; lateral lobes long, tubular and with frayed apical margin. — Female. Proctiger subglobular, pointed apically; dorsal margin, in profile, strongly bent downwards; sparsely covered with moderately long setae in apical half dorsally. Subgenital plate globular, strongly bulged, broadly rounded apically; densely covered with long setae in apical part, dorsal margin with a row of bristles. Host-plant. Unknown.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4F87424FC60CBCFE72F9EF.taxon	distribution	Distribution. Argentina (Chubut). Derivation of name. From Latin globus = sphere referring to the globular female subgenital plate.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4F87424FC60CBCFE72F9EF.taxon	discussion	Comments. Russelliana globosa resembles R. adelpha and nolanae; see comments under R. adelpha. R. globosa differs from the two species in a less extensive pattern on the male forewing, a distal segment of the aedeagus with longer lateral lobes with subparallel sides, a subglobular female proctiger and globular subgenital plate lacking an apical process.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4D877D4FC6098CFA1CF912.taxon	materials_examined	Material examined. Type material. Holotype ♂: Bolivia: Department Chuquisaca, Province Nor Cinti, Padcoya to Camargo, 2800 – 3200 m, 26 – 28. xii. 1984 (L. E. Peña) (MHNG, dry). Paratypes: Argentina: 1 ♀, Province Jujuy, Iturbe, 31. xii. 1984 (L. E. Peña) (MHNG, dry). Bolivia: 2 ♂, 5 ♀, same as holotype (L. E. Peña) (MHNG, dry, on slide).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4D877D4FC6098CFA1CF912.taxon	description	Description. Coloration. Head including genal processes pale yellow to orange, genal processes sometimes with dark tips; clypeus pale to dark brown. Eyes pale yellow to black, ocelli orange to red. Antenna yellow to orange, segments 3 – 8 with brown apices, segments 9 – 10 entirely dark brown. Pronotum of the same colour as vertex, sometimes with yellow to orange spot in the middle; mesopraescutum pale yellow to orange, sometimes with two yellow to orange patches along the fore margin; mesoscutum pale yellow to orange, sometimes with four broad, and, in the middle, one narrow, yellow to orange longitudinal stripes; mesoscutellum pale yellow to orange along the margin, sometimes yellow to orange in the middle. Metanotum pale yellow to orange. Forewing with yellow veins and amber-coloured membrane. Legs bright yellow to orange, meracanthus of metacoxa bright yellow. Abdomen orange to dark brown. Male terminalia yellow to orange. Female terminalia orange to brown, with dark apex. Structure. Head, in profile, moderately to strongly inclined from longitudinal body axis (45 – 90 °). Vertex subtrapezoidal with indented foveae, anteriorly produced into transverse lobe on either side of mid-line, with slightly raised hind margin around lateral ocelli, covered with microscopical setae; genal processes conical, slender, subacute apically, shorter than vertex, covered with moderately long setae. Pronotum with one pronounced lateral and one relatively shallow sublateral tubercles on either side. Forewing oblong-oval, broadly, evenly rounded apically; vein C + Sc weakly curved, pterostigma long, vein Rs straight or weakly sinuous, almost straight apically; vein M about as long as either of veins M 1 + 2 and M 3 + 4; surface spinules very dense, present in all cells, leaving very narrow spinule-free stripes along the veins, irregularly spaced; very sparse at base of cell c + sc; radular spinules covering triangular areas along the margin of cells r 2, m 1, m 2 and cu 1. Metatibia with 6 – 7 apical spurs. Terminalia. Male. Proctiger tubular; sparsely covered with moderately long setae. Subgenital plate short, subglobular; with sparsely spaced moderately long setae in apical half. Paramere narrowly lamellar; with long hook-shaped apico-anterior process on pedicel, median hump which is short, slightly curved anteriorly and with apically sclerotised tooth, and slightly bulged apico-posterior lobe; hump and lobe of subequal length, slightly lower than process; outer face sparsely covered with moderately long setae mostly in posterior part, inner face covered with moderately long setae in apical half and with long thick bristles in basal third. Distal segment of aedeagus moderately elongate, weakly expanding towards apex; with short beak-shaped anterior process and one horn-shaped apico-posterior tubercle; lateral lobes long, dilated towards apex which is concave. — Female. Proctiger subglobular, pointed apically; dorsal margin, in profile, strongly bent downwards; relatively densely covered with moderately long setae in apical half. Subgenital plate cuneate, with short apical process; sparsely covered with long setae in apical part and along ventral margin, dorsal margin with a row of bristles. Host-plant. Unknown.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4D877D4FC6098CFA1CF912.taxon	distribution	Distribution. Reported from Argentina (Jujuy), Bolivia (Chuquisaca) (Burckhardt 1987).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4D877D4FC6098CFA1CF912.taxon	discussion	Comments. The specimens from Chile previously assigned to R. intermedia in Burckhardt et al. (2012) belong to another closely related species, Russelliana xantha sp. nov. Russelliana intermedia resembles R. adela, bicolorata and xantha; see comments under R. adela. R. intermedia differs from the three species in the presence of a median hump and long thick bristles in the basal third of the paramere. It differs from R. bicolorata and xantha in a multicoloured body, from R. adela in a yellow forewing membrane and a female proctiger with its dorsal margin bent downwards, from R. bicolorata in a shape of the forewing which is broadest in the apical third, and from R. xantha in more dense surface spinules of the forewing membrane.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4D877D4FC6098CFA1CF912.taxon	description	Russelliana longicauda sp. nov. (Figs 9 D, 13 B, 18 A, 23 A, 27 G, 31 I)	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4D877D4FC6098CFA1CF912.taxon	materials_examined	Material examined. Holotype ♂: Chile: III Region, Province Chañaral, Pedernales, Cordillera de Domeyko, 26 ° 21 ' S 69 ° 16 ' W, 3400 m, 11. xii. 1993, Adesmia hystrix, desert (D. Burckhardt) # 25 (MHNG, dry). Paratypes: Chile: 3 ♀, II Region, Province El Loa, Calama to San Pedro de Atacama, 3050 m, vii. 1997, Acantholippia trifida (F. Saiz) # T (NHMB, dry); 49 ♂, 23 ♀, 2 immatures, III Region, Province Chañaral, Pedernales, Cordillera de Domeyko, 26 ° 21 ' S 69 ° 16 ' W, 3300 m, 10. xii. 1993, Adesmia hystrix, desert (D. Burckhardt) # 24 (BMNH, MHNG, NHMB, dry); 8 ♂, 6 ♀, same as holotype (D. Burckhardt) # 25 (MHNG, dry); 4 ♂, 6 ♀, same but Province Copiapó, Quebrada de Paipote, 20 km W Laguna Santa Rosa, 27 ° 05 ' S 69 ° 20 ' W, 3500 m, 12. xii. 1993, Adesmia hystrix, gully with Adesmia shrubs (D. Burckhardt) # 29 (MHNG, dry); 8 ♂, 17 ♀, IV Region, Province Elqui, La Laguna, ca 120 km E La Serena, 2800 – 3000 m, 17. xii. 1995, Adesmia sp., scattered shrubs (D. Burckhardt) # 4 (1) (MHNG, dry, on slide, 70 % ethanol).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4D877D4FC6098CFA1CF912.taxon	description	Description. Coloration. Head including genal processes orange to dark brown, genal processes sometimes with pale yellow tips, vertex yellow, orange to brown along lateral margin, sometimes entirely brown; clypeus dark brown. Eyes yellow to brown, ocelli red. Antenna yellow to brownish, segments 3 – 7 with dark brown apices, segments 8 – 10 entirely dark brown. Pronotum pale yellow along the margin, dark orange to brown in the middle; mesopraescutum pale yellow with two orange to brown patches along the fore margin; mesoscutum pale yellow with four broad and, in the middle, one narrow orange to brown longitudinal stripes; mesoscutellum pale yellow along the margin, orange to brown in the middle. Metanotum orange to brown. Sometimes thorax of old specimens entirely brown. Forewing with pale yellow to brownish veins and dirty yellowish membrane with pattern consisting of pale brown broad stripe parallel to apical margin stretching from apical part of costal vein to apex of Cu 1 a, leaving light areas in cells r 2, m 1 and m 2 along the margin, and brown patch along vein Cu 1 b; sometimes with indistinct pale brown stripe in the middle of the wing stretching from vein R 1 to vein Cu 1 b. Legs yellow to brownish, with darker femora and distal tarsal segments, meracanthus of metacoxa yellow to orange. Abdomen yellow to dark brown. Male terminalia yellow with orange to brown subgenital plate. Female terminalia orange to brown, darker in apical third. Males darker, general colour of body brown. Females generally lighter, general colour of body yellow with orange pattern. Structure. Head, in profile, inclined from longitudinal body axis at 45 °. Vertex subtrapezoidal with indented foveae, anteriorly slightly produced into transverse tubercle on either side of mid-line, with raised hind margin around lateral ocelli, covered with short setae; genal processes conical, slender, subacute apically, slightly shorter than vertex, covered with long setae. Pronotum with one pronounced lateral and one relatively shallow sublateral tubercles on either side. Forewing oval, narrowly rounded apically; vein C + Sc hardly curved, pterostigma long, vein Rs almost straight, slightly curved to fore margin apically; vein M about as long as either of veins M 1 + 2 and M 3 + 4; surface spinules absent; radular spinules covering triangular areas along the margin of cells r 2, m 1, m 2 and cu 1. Metatibia with 6 – 8 apical spurs. Terminalia. Male. Proctiger tubular; densely covered with short setae. Subgenital plate short, subglobular; with densely spaced moderately long setae. Paramere narrowly lamellar, irregularly rounded apically, posterior margin slightly convex; with short apico-anterior process lacking pedicel, and apically sclerotised median tooth; outer face sparsely covered with moderately long setae mostly in posterior part, inner face densely covered with relatively short setae. Distal segment of aedeagus moderately elongate, weakly expanding towards apex; with very short anterior process in basal part of apical quarter, two small apico-posterior tubercles; lateral lobes short, tapering towards apex, with entire apical margin. — Female. Proctiger cuneate, subacute apically; dorsal margin, in profile, almost straight; densely covered with short setae in apical half. Subgenital plate cuneate, with very long apical process; densely covered with moderately long setae, dorsal margin with a bristle. Host-plant. Adesmia hystrix Phil. (Fabaceae). Two females and one immature were collected on Acantholippia trifida (Gay) Moldenke (Verbenaceae) which seems an unlikely host.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4D877D4FC6098CFA1CF912.taxon	distribution	Distribution. Chile (II – IV Regions). Derivation of name. From Latin longus = long and cauda = tail for the long female terminalia.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4D877D4FC6098CFA1CF912.taxon	discussion	Comments. Russelliana longicauda resembles R. pallida in a brown pattern in the apical part of the forewing membrane, in a narrowly lamellar paramere bearing an apico-anterior process lacking a pedicel and a median tooth, in a distal segment of the aedeagus bearing two small apico-posterior tubecrles, and in a cuneate female proctiger and cuneate subgenital plate. R. longicauda differs from R. pallida in the absence of surface spinules in the apical part of the forewing membrane, a short apico-anterior process of the paramere, a very short anterior process in the basal part of the apical quarter, a distal segment of the aedeagus bearing short lobes with an entire apical margin, and an elongate female terminalia with a subgenital plate bearing a very long apical process. Russelliana longirostro sp. nov. (Figs 9 E, 13 C, 18 B, 23 B, 27 H, 31 J)	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4D877D4FC6098CFA1CF912.taxon	materials_examined	Material examined. Holotype ♂: Chile: II Region, Province El Loa, Calama to San Pedro de Atacama, 3050 m, vii. 1997, Adesmia atacamensis (F. Saiz) # U (NHMB, dry). Paratypes: Chile: 7 ♂, 6 ♀, 2 immatures, same as holotype (F. Saiz) # U (NHMB, dry, on slide); 29 ♂, 25 ♀, 11 immatures, 1?, III Region, Province Chañaral, 20 – 25 km W Pedernales, Cordillera de Domeyko, 36 ° 23 ' S 69 ° 25 ' W, 2500 – 2700 m, 10. xii. 1993, Adesmia atacamensis, semidesert (D. Burckhardt) # 23 (BMNH, MHNG, NHMB, dry); 3 ♀, same but 12 km SW El Salvador, 26 ° 18 ' S 69 ° 42 ' W, 1700 m, Adesmia atacamensis, desert with a few shrubs along creek (D. Burckhardt) # 22 (MHNG, dry); 1?, IV Region, Province Elqui, Coquimbo, 12 miles N of Los Vilos, 13. xii. 1950 (E. S. Ross & A. E. Michelbacher) (CASC, dry); 1 ♀, V Region, Province San Felipe de Aconcagua, Putaendo, 10 km N San Felipe, 700 m, 15. xii. 1995, Adesmia sp., river bed, quebrada vegetation (D. Burckhardt) # 1 (2) (MHNG, dry); 1 ♂, 2 ♀, same but Lycium sp. (D. Burckhardt) # 1 (6) (MHNG, dry).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4D877D4FC6098CFA1CF912.taxon	description	Description. Coloration. Head including genal processes pale yellow, vertex often with orange pattern; clypeus dark brown. Eyes yellow, ocelli red. Antenna pale yellow, segments 3 – 8 with dark brown apices, segments 9 – 10 entirely dark brown. Pronotum orange to brownish; mesopraescutum pale yellow with two orange patches along the fore margin and two orange patches posteriorly; mesoscutum yellow with six broad and, in the middle, one narrow orange to brownish longitudinal stripes; mesoscutellum pale yellow along the margin, orange to brownish in the middle. Metanotum orange to brown. Forewing with yellow to brown veins and semitransparent, colourless membrane with conspicuous pale brown pattern consisting of constant patch along vein Cu 1 b and dots scattered over entire surface, partly confluent in apical part, forming broad submarginal stripe stretching from apical part of costal vein to apex of vein Cu 1 a, leaving light areas in cells r 2, m 1 and m 2 along the margin; sometimes with relatively distinct median broad stripe stretching from apical part of cell r 1 to base of vein Cu 1 b. Legs yellow to brownish with darker femora and distal tarsal segments, meracanthus of metacoxa yellow to brown. Abdomen and terminalia yellow to brown, lighter ventrally. Female terminalia darker in apical third. Structure. Head, in profile, strongly inclined from longitudinal body axis (> 45 °). Vertex subtrapezoidal with indented foveae, anteriorly produced into transverse lobe on either side of mid-line, with raised hind margin around lateral ocelli, covered with short setae; genal processes conical, slightly swollen, subacute apically, shorter than vertex, covered with moderately long setae. Pronotum with two pronounced lateral and one relatively shallow sublateral tubercles on either side. Forewing oval, broadly, unevenly rounded apically; vein C + Sc weakly curved, pterostigma long, vein Rs weakly sinuous, slightly curved to fore margin apically; vein M about as long as either of veins M 1 + 2 and M 3 + 4; surface spinules faint, very dense, present in all cells, leaving no spinule-free stripes along the veins, irregularly spaced; radular spinules weakly pronounced. Metatibia with 7 – 8 apical spurs. Terminalia. Male. Proctiger tubular; sparsely covered with moderately long setae. Subgenital plate short, subglobular; with sparsely spaced moderately long setae restricted to median part. Paramere broadly lamellar, slightly curved with median convexity apically; with apico-anterior process on pedicel, apically sclerotised median tooth and slightly bulged apico-posterior lobe; both process and lobe of subequal length; outer face covered with moderately long setae in apical half, inner face densely, evenly covered with short setae. Distal segment of aedeagus elongate; with long anterior process, one large, raised apical and one horn-shaped apico-posterior tubercles; lateral lobes long, dilated towards apex which is concave. — Female. Proctiger cuneate, pointed apically; dorsal margin, in profile, slightly convex; relatively densely covered with moderately long setae in apical half. Subgenital plate cuneate, with moderately long apical process; densely covered with moderately long setae in ventral part, dorsal margin with a row of bristles. Host-plant. Adesmia atacamensis Phil. (Fabaceae).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4D877D4FC6098CFA1CF912.taxon	distribution	Distribution. Chile (II – V Regions). Derivation of name. From Latin longus = long and rostrum = beak for its long rostrum.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B4D877D4FC6098CFA1CF912.taxon	discussion	Comments. Russelliana longirostro resembles R. adesmiae; see comments under R. adesmiae. R. longirostro differs from R. adesmiae in a distinctly longer rostrum and the absence of a distinct median hump of the paramere.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B72877E4FC609CAFAFEF9A0.taxon	materials_examined	Material examined. Type material. Paratypes: Peru: 1 ♂, 1 ♀, Region Lima, Mala Valley, 16. x. 1958, Lycium salsum (L. D. Tuthill) (BMNH, dry).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B72877E4FC609CAFAFEF9A0.taxon	description	Description. Coloration. Dimorphic, male slightly darker, general body colour yellow to brown; female slightly lighter, general body colour yellow to orange, forewing pattern paler than in males. Head including genal processes pale yellow to orange, genal processes with brownish tips; clypeus brown. Eyes pale to dark brown, ocelli orange to red. Antenna pale yellow, segment 1 entirely brown, segments 3 – 8 with brown apices, segments 9 – 10 entirely dark brown. Pronotum yellow to pale brown; mesopraescutum pale yellow with two orange patches along the fore margin; mesoscutum orange, sometimes with indistinct, yellow longitudinal stripes; mesoscutellum bright yellow. Metanotum bright yellow to orange. Forewing with whitish to dark brown veins and membrane with distinct pale to dark brown pattern different for males and females. Male forewing membrane with brown to dark brown pattern consisting of two broad transverse stripes: submarginal one stretching from apical part of costal vein to apex of vein Cu 1 a leaving light areas in cells r 2, m 1, m 2 and cu 1 along the margin, and median one stretching from bifurcation of veins R and M + Cu, along the veins M + Cu, Cu and Cu 1 b, to median part of cell cu 1; membrane between two bands colourless, with scattered brown dots in cells and sometimes on veins. Female forewing membrane with pale brown pattern consisting of dots occupying all cells, partly confluent in apical part, and two broad transverse stripes as on male forewing membrane but distinctly paler. Legs pale to dirty yellow, sometimes with brownish femora, meracanthus of metacoxa pale yellow. Male abdomen orange to dark brown, terminalia dirty yellow to brown. Female abdomen orange to slightly brownish, terminalia yellow. Structure. Head, in profile, inclined from longitudinal body axis at 45 °. Vertex trapezoidal, flat with indented foveae, anteriorly produced into transverse lobe on either side of mid-line, hind margin around lateral ocelli not raised, covered with long setae; genal processes short, swollen, conical apically, covered with long setae. Pronotum with two pronounced lateral and one shallow sublateral tubercles on either side. Forewing rhomboidal; vein C + Sc strongly, unevenly curved, pterostigma long, vein Rs almost straight, strongly curved to fore margin apically; vein M about as long as either of veins M 1 + 2 and M 3 + 4; surface spinules large, very dense, present in all cells, leaving no spinule-free stripes along the veins, irregularly spaced; radular spinules not pronounced. Metatibia with 6 – 9 apical spurs. Terminalia. Male. Proctiger tubular; sparsely covered with moderately long setae in apical half. Subgenital plate elongate; with sparsely spaced moderately long setae restricted to ventral half. Paramere shortly lamellar; with thumb-like apico-anterior process on pedicel and long, slightly tapering towards apex apico-posterior lobe, with inwards directed sclerotised anterior tooth situated at base of the lobe; lobe more than twice longer than process; outer face covered with moderately long setae in apical part, inner face covered with long setae and with long thick bristles apically. Distal segment of aedeagus massive, broadly, unevenly expanding towards apex, inflated anteriorly; lateral lobes relatively short, apex concave and with frayed margin. — Female. Proctiger subglobular, pointed apically; dorsal margin, in profile, strongly bent downwards; densely covered with moderately long setae in apical part. Subgenital plate globular, broadly rounded apically; densely covered with long setae. Host-plant. Lycium salsum Ruiz & Pav. (Solanaceae).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B72877E4FC609CAFAFEF9A0.taxon	distribution	Distribution. Reported as Arepuna lycii from Peru (holotype ♂ from Lima, Mala Valley, 16. x. 1958, Lycium salsum (BMNH, dry), not examined; Tuthill 1959. Material examined. Peru (Lima) (paratypes of A. lycii).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B72877E4FC609CAFAFEF9A0.taxon	discussion	Comments. Russelliana lycii resembles R. capsici and dimorpha; see comments under R. capsici. It differs from the two species in a thumb-like, not recurved apico-anterior process of the paramere and a globular female subgenital plate lacking an apical process. R. lycii differs from R. capsici in the presence of sexual dimorphism.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7187784FC60959FCFAFA5E.taxon	materials_examined	Material examined. Type material. Holotype ♂: Bolivia: Department Chuquisaca, Province Nor Cinti, Lecori, S Potosi, 3200 m, 26 – 27. xii. 1984 (L. E. Peña) (MHNG, dry). Paratypes: Argentina: 1 ♂, Province Jujuy, Iturbe, 31. xii. 1984 (L. E. Peña) (MHNG, on slide). Bolivia: 15 ♂, 3 ♀, same as holotype (L. E. Peña) (MHNG, NHMB, dry, on slide). Additional material. Bolivia: 1 ♂, Department Oruro, Province Cercado, 2 km W Leque Palca, 17 ° 38.2 ' S 66 ° 58.4 ' W, 3950 m, 23. iii. 2001 (A. Freidberg) (NHMB, dry).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7187784FC60959FCFAFA5E.taxon	description	Description. Coloration. Head pale yellow, genal processes yellow with dark tips, genae brown to black, vertex with variable orange to brown pattern; clypeus brown to dark brown. Eyes yellow to brown, ocelli yellow to orange. Antenna yellow to brownish, segments 3 – 7 with brown apices, segments 8 – 10 entirely dark brown. Pronotum of the same colour as vertex, with orange to brown patch in the middle; mesopraescutum pale yellow, with two orange patches along the fore margin and two orange transverse stripes posteriorly, sometimes entirely yellow; mesoscutum pale yellow with four broad and, in the middle, one narrow yellow to brown longitudinal stripes; mesoscutellum pale yellow along the margin, yellow to brown in the middle. Metanotum pale yellow to brown. Forewing with yellow to dark brown veins and colourless membrane with brown pattern consisting of large patches in the apex of cell r 1 and r 2 and along vein Cu 1 b, and dots varying in size and number mainly in apical twothirds of the wing. Legs yellow to brown, with darker femora and distal tarsal segments, meracanthus of metacoxa pale yellow. Male abdomen and terminalia brown to almost black. Female abdomen and terminalia yellow to brown, proctiger darker apically. Females lighter, general colour of body yellow. Structure. Head, in profile, moderately to strongly inclined from longitudinal axis of body (45 – 90 °). Vertex subtrapezoidal with indented foveae, anteriorly produced into transverse lobe on either side of mid-line, with raised hind margin around lateral ocelli, covered with short setae; genal processes conical, slender, subacute apically, shorter than vertex, covered with long setae. Pronotum with two pronounced lateral tubercles on either side. Forewing oblong-oval, broadly, unevenly rounded apically; vein C + Sc weakly curved, pterostigma long, vein Rs almost straight, slightly curved to fore margin apically; vein M about as long as either of veins M 1 + 2 and M 3 + 4; surface spinules weakly developed, leaving relatively broad spinule-free stripes along the veins, forming transverse rows or indistinct hexagons in apical half, very sparse in basal half; absent at base of cell c + sc; radular spinules covering triangular areas along the margin of cells r 2, m 1, m 2 and cu 1. Metatibia with 6 – 8 apical spurs. Terminalia. Male. Proctiger tubular; sparsely covered with moderately long setae. Subgenital plate short, subglobular; with sparsely spaced moderately long setae. Paramere broadly lamellar; with apico-anterior process on long pedicel, and long apico-posterior lobe, relatively straight posteriorly, with sclerotised anterior tooth situated in the middle of the lobe and directed inwards; lobe distinctly longer than process; outer face sparsely covered with moderately long setae in apical half, inner face densely, evenly covered with long setae. Distal segment of aedeagus moderately elongate, weakly expanding towards apex; with long hook-shaped anterior process and two apico-posterior tubercles; lateral lobes long, strongly dilated towards apex which is concave. — Female. Proctiger cuneate, pointed apically; dorsal margin, in profile, strongly tapering in apical third; sparsely covered with moderately long setae. Subgenital plate cuneate, with long apical process; sparsely covered with moderately long setae, dorsal margin with a row of bristles. Host-plant. Unknown.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7187784FC60959FCFAFA5E.taxon	distribution	Distribution. The holotype of R. maculata was erroneously reported from Argentina (Jujuy) by Burckhardt (1987). However, it was collected in Bolivia (Chuquisaca). Material examined. Argentina (Jujuy), Bolivia (Chuquisaca, Oruro).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7187784FC60959FCFAFA5E.taxon	discussion	Comments. Russelliana maculata resembles R. punctulata in the presence of a brown pattern and surface spinules in the apical part of the forewing membrane, in a pronotum bearing two lateral tubercles, in a paramere bearing an apico-anterior process on a long pedicel and a large apico-posterior lobe, in a distal segment of the aedeagus bearing an anterior process, two apico-posterior tubercles and long lateral lobes dilated towards apex, in a cuneate female proctiger and subgenital plate bearing a long apical process. R. maculata differs from R. punctulata in an extensive pattern on the forewing membrane, a paramere with a longer process than a posterior lobe which is straight, and a long anterior process of the distal segment of the aedeagus. Russelliana magellanica sp. nov. (Figs 9 H, 13 G, 18 E, 23 E, 27 K, 32 C)	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7187784FC60959FCFAFA5E.taxon	materials_examined	Material examined. Holotype ♂: Chile: XII Region, Province Magallanes, San Gregori, km 140 – 150 on road from Punta Arenas to Punta Delgada, 52 ° 35 ' / 38 ' S 70 ° 10 ' / 15 ' W, 0 – 50 m, 18. i. 1991, Adesmia boronioides (D. Burckhardt) # 46 (MHNG, dry). Paratypes: Chile: 1 ♀, XII Region, Province Magallanes, Parque John Fell, 17 – 26. ii. 1982 (D. Lanfranco) No. 11 (MHNG, on slide); 56 ♂, 52 ♀, 3 immatures, same as holotype (D. Burckhardt) # 46 (BMNH, MHNG, NHMB, dry, on slide).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7187784FC60959FCFAFA5E.taxon	description	Description. Coloration. Head including genal processes brown to dark brown, vertex pale yellow with variable orange to dark brown pattern; clypeus dark brown. Eyes yellow to brown, ocelli red. Antenna yellow, segments 1, 8 – 10 entirely dark brown, segment 2 brownish at base, segment 3 entirely yellow, segments 4 – 7 with brown apices, segment 6 slightly darker apically. Pronotum pale yellow with orange to brown patch in the middle, sometimes entirely dark brown; mesopraescutum pale yellow with two orange to brown patches along the fore margin and two orange to brown transverse stripes posteriorly; mesoscutum pale yellow with four broad and, in the middle, one narrow orange to brown longitudinal stripes; mesoscutellum pale yellow along the margin, brown in the middle. Metanotum orange to brown. Forewing with yellow to brown veins and yellowish membrane with variable brown pattern consisting of broad stripe parallel to apical margin stretching from apical part of costal vein to apex of vein Cu 1 a, leaving light areas in cells r 2, m 1 and m 2 along the margin, and patches at bifurcation of veins R and M + Cu, in apical part of cell r 2 and along vein Cu 1 b, sometimes forming stripe in the middle of the wing stretching from apical part of cell r 1 to vein Cu 1 b; sometimes with patches in cells c + sc and cu 2. Legs yellow to brownish with darker femora and distal tarsal segments, meracanthus of metacoxa yellow to orange. Abdomen and terminalia brown to black. Structure. Head, in profile, moderately to strongly inclined from longitudinal axis of body (45 – 90 °). Vertex subtrapezoidal, anteriorly produced into transverse lobe on either side of mid-line, covered with short setae; genal processes conical, slender, subacute apically, distinctly shorter than vertex, covered with moderately long setae. Pronotum with two pronounced lateral tubercles on either side. Forewing oviform; vein C + Sc weakly curved, pterostigma long, vein Rs straight apically; vein M shorter than either of veins M 1 + 2 and M 3 + 4; surface spinules relatively large, present in all cells, leaving no spinule-free stripes along the veins, densely spaced, forming hexagonal pattern in the middle of cells; absent at base of cell c + sc; radular spinules not pronounced. Metatibia with 7 apical spurs. Terminalia. Male. Proctiger tubular; sparsely covered with moderately long setae. Subgenital plate short, subglobular; with sparsely spaced moderately long setae. Paramere broadly lamellar; with short apico-anterior process lacking pedicel, median hump with apically sclerotised tooth, and bulged apico-posterior lobe; lobe situated lower than process and hump; outer face densely covered with moderately long setae mostly in posterior part, inner face densely covered with moderately long setae. Distal segment of aedeagus elongate; with long anterior process and two small apico-posterior tubercles; lateral lobes long, dilated towards apex which is concave. — Female. Proctiger cuneate, pointed apically; dorsal margin, in profile, weakly sinuous; densely covered with long setae. Subgenital plate cuneate, with moderately long apical process; densely covered with long setae, dorsal margin with a row of bristles. Host-plant. Adesmia boronioides Hook. f. (Fabaceae).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7187784FC60959FCFAFA5E.taxon	distribution	Distribution. Chile (XII Region). Derivation of name. Latinised form of the name Magallanes, the Province in Chile where the species comes from.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7187784FC60959FCFAFA5E.taxon	discussion	Comments. Russelliana magellanica resembles R. chilensis; see comments under R. chilensis. R. magellanica differs from R. chilensis in a shape of the forewing which is broadest in the middle and its more extensive pattern, and a less bulged posteriorly apico-posterior lobe of the paramere.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7787754FC6097EFF53F92C.taxon	materials_examined	Material examined. Type material. Holotype ♂: Argentina: Province Mendoza, above Villa Vicencia, 50 km NW Mendoza, 1800 – 2200 m, 18. i. 1997, Mulguraea scoparia [Diostea scoparia], low scrub (D. Burckhardt) # 15 (7) (MHNG, dry). Paratypes: Argentina: 4 ♂, 16 ♀, 1 immature, same as holotype (D. Burckhardt) # 15 (7) (MHNG, NHMB, dry, on slide).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7787754FC6097EFF53F92C.taxon	description	Description. Coloration. Head including genal processes pale yellow to brown, genal processes brown at base and with dark tips, vertex with yellow to brown pattern; clypeus dark brown. Eyes grey to dark brown, ocelli orange to red. Antenna pale to dirty yellow, segments 1 – 2 brownish, segments 3 – 8 with brown apices, segments 9 – 10 entirely dark brown. Pronotum of the same colour as vertex, sometimes with brown spots on either side and yellow spot in the middle; mesopraescutum pale yellow to brown, with two orange to brown patches along the fore margin and two or three orange to brown transverse stripes posteriorly; mesoscutum pale yellow to brown, with four broad, and, in the middle, one narrow, orange to dark brown longitudinal stripes; mesoscutellum pale yellow to brownish along the margin, sometimes orange in the middle. Metanotum yellow to dark brown. Forewing with whitish to dark brown veins and semitransparent, colourless membrane with dark brown pattern consisting of stripes and patches over entire surface, stretching from apical part of costal vein to median part of vein Cu 1 a, along vein Cu 1 a, and to base of vein M 1 + 2, sometimes leaving light areas in cells m 1 and m 2 along the margin, interrupted patches from base of pterostigma to median part of vein M and in cell cu 2, and patch along vein Cu 1 b; membrane between bands and patches colourless, with dots varying in size and number. Legs dirty yellow to brown, with dark brown femora and distal tarsal segments, meracanthus of metacoxa pale yellow. Abdomen and terminalia dark brown to black. Structure. Head, in profile, weakly inclined from longitudinal body axis (<45 °). Vertex subtrapezoidal with indented foveae, anteriorly produced into transverse lobe on either side of mid-line, with slightly raised hind margin around lateral ocelli, covered with long setae; genal processes conical, slender, subacute apically, slightly shorter than vertex, covered with long setae. Pronotum bearing two pronounced lateral tubercles on either side. Forewing oblong-oval, broadly, evenly rounded apically; vein C + Sc hardly curved, pterostigma long, vein Rs weakly sinuous, curved to fore margin apically; vein M longer than either of veins M 1 + 2 and M 3 + 4; surface spinules bold, present in all cells, leaving narrow spinule-free stripes along the veins, sparsely and irregularly spaced, becoming sparser towards base, absent or very sparse on unpigmented areas; absent in cell c + sc; radular spinules covering rounded areas along the margin of cells r 2, m 1, m 2 and cu 1. Metatibia with 6 – 7 apical spurs. Terminalia. Male. Proctiger tubular; sparsely covered with moderately long setae. Subgenital plate short, subglobular; with sparsely spaced moderately long setae. Paramere narrowly lamellar; with finger-shaped apicoanterior process on long pedicel and long finger-shaped apico-posterior lobe, evenly rounded apically; both process and lobe of subequal length; outer face covered with moderately long setae mostly in posterior part, inner face sparsely covered with short thick bristles, with few long thick setae apically and bearing a row of long thick setae along anterior margin. Distal segment of aedeagus elongate, weakly, irregularly truncating towards apex; lateral lobes long, tubular, sclerotised. — Female. Proctiger cuneate, pointed apically; dorsal margin, in profile, conspicuously bent in basal third; relatively sparsely covered with long setae. Subgenital plate subglobular, with short apical process; densely covered with long setae in ventral part. Host-plant. Mulguraea scoparia (Gillies & Hook.) N. O'Leary & P. Peralta (Verbenaceae).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7787754FC6097EFF53F92C.taxon	distribution	Distribution. Reported from Argentina (Mendoza) (Burckhardt 2008 a), the same material was examined here.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7787754FC6097EFF53F92C.taxon	discussion	Comments. Russelliana marionae resembles R. theresae in a vertex covered with long setae, in a forewing membrane with a brown pattern, in a paramere lacking a tooth and bearing a finger-shaped apico-anterior process of subequal length with an apico-posterior lobe, in an apically angular distal segment of the aedeagus lacking tubercles and bearing long tubular lateral lobes, in a cuneate female proctiger and subglobular subgenital plate bearing a short apical process. R. marionae differs from R. theresae in a longer forewing with a less extensive pattern in the basal half of its membrane, the presence of long macroscopical setae on the forewing veins, and a paramere bearing a finger-shaped apico-posterior lobe. Russelliana melaina sp. nov. (Figs 1, 9 J, 13 I, 18 G, 23 G, 28 A, 32 E)	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7787754FC6097EFF53F92C.taxon	materials_examined	Material examined. Holotype ♂: Chile: IV Region, Province Elqui, Nueva Elqui towards La Laguna, ca 115 km E La Serena, 2600 m, 17. xii. 1995, Adesmia sp., scattered shrubs (D. Burckhardt) # 5 (3) (MHNG, dry). Paratypes: Chile: 6 ♂, 3 ♀, IV Region, Province Elqui, Coquimbo, 5 miles N of Laguna Dam, 2438 m, 6. xii. 1950 (E. S. Ross & A. E. Michelbacher) (CASC, dry); 1 ♂, 1 ♀, 1 immature, same but Nueva Elqui to La Laguna, ca 115 km E La Serena, 2300 m, 17. xii. 1995, Adesmia sp., quebrada vegetation with small shrubs (D. Burckhardt) # 3 (1, 3) (MHNG, dry); 15 ♂, 16 ♀, 4 immatures, 2?, same as holotype (D. Burckhardt) # 5 (3) (BMNH, MHNG, NHMB, dry, on slide, 70 % ethanol).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7787754FC6097EFF53F92C.taxon	description	Description. Coloration. Head including genal processes yellow to black; clypeus black. Eyes yellow to brown, ocelli orange. Antenna yellow, segment 1 yellow to black, segments 3 – 8 with dark brown apices, segments 9 – 10 entirely dark brown. Thorax either entirely brown to black, or light with brown pattern. When thorax light, pronotum yellow; mesopraescutum yellow to orange with two brown patches along the fore margin; mesoscutum orange with four broad and, in the middle, one narrow brown longitudinal stripes; mesoscutellum brown. Metanotum yellow to black. Forewing with pale yellow veins and semitransparent, unevenly amber-coloured membrane; sometimes with indistinct pale brown patch along vein Cu 1 b. Legs yellow, femora and distal tarsal segments darker at base, meracanthus of metacoxa yellow to black. Male abdomen and terminalia black, proctiger yellow at least in apical third. Female abdomen and terminalia yellow to black, often yellow ventrally, with dark apex. Males darker, general colour of body black. Females generally lighter, general colour of body yellow to brown. Structure. Head, in profile, moderately to strongly inclined from longitudinal body axis (45 – 90 °). Vertex subtrapezoidal with indented foveae, anteriorly produced into conspicuously transverse tubercle on either side of mid-line, with raised hind margin around lateral ocelli, covered with short setae; genal processes conical, slender, subacute apically, slightly shorter than vertex, covered with long setae. Pronotum with one lateral, relatively pronounced, tubercle on either side. Forewing oviform; vein C + Sc strongly, evenly curved, pterostigma long, vein Rs weakly sinuous, almost straight apically; vein M about as long as either of veins M 1 + 2 and M 3 + 4; surface spinules present in all cells, leaving broad spinule-free stripes along the veins, sparsely spaced and forming transverse rows; very sparse at base of cell c + sc; radular spinules covering rounded areas along the margin of cells r 2, m 1, m 2 and cu 1. Metatibia with 7 – 8 apical spurs. Terminalia. Male. Proctiger irregularly subtrapezoidal; densely covered with short setae mostly in apical and posterior part. Subgenital plate short, subglobular; with densely spaced short setae, dorsal margin with a row of bristles. Paramere hammer-shaped, curved with median convexities apically; with long hook-shaped apico-anterior process on very short pedicel, apically sclerotised median tooth and apico-posterior lobe strongly bulged posteriorly; outer face covered with short setae mostly in posterior part, inner face densely covered with short setae mostly in anterior part. Distal segment of aedeagus moderately elongate, weakly expanding towards apex; with short blunt anterior process and two small apico-posterior tubercles; lateral lobes long, strongly dilated towards apex which is concave. — Female. Proctiger cuneate, subacute apically; dorsal margin, in profile, almost straight; densely covered with moderately long setae in apical half. Subgenital plate cuneate, with short apical process; densely covered with moderately long setae, dorsal margin with a row of bristles. Host-plant. Adesmia sp. (Fabaceae).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7787754FC6097EFF53F92C.taxon	distribution	Distribution. Chile (IV Region). Derivation of name. From Ancient Greek µέλαινα = black referring to the black colour of the body and dedicated to Melaina, the Greek Goddess of Nightmares.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7787754FC6097EFF53F92C.taxon	discussion	Comments. Russelliana melaina is rather distinctive from other Adesmia feeding species in an oviform forewing with a yellow membrane lacking a pattern and bearing a strongly curved vein C + Sc, an irregularly subtrapezoidal and posteriorly strongly bulged male proctiger, a posteriorly strongly bulged apico-posterior lobe of the paramere, and a short, blunt anterior process of the distal segment of the aedeagus. The species generally resembles Adesmia - feeders in a distal segment of the aedeagus bearing an anterior process, two small apicoposterior tubercles and long lateral lobes dilated towards apex, and in a cuneate female proctiger and cuneate subgenital plate bearing an apical process. Russelliana mendozae sp. nov. (Figs 9 K, 13 J, 18 H, 23 H, 28 B, 32 F)	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7787754FC6097EFF53F92C.taxon	materials_examined	Material examined. Holotype ♂: Argentina: Province Mendoza, Mendoza Valley, Punta de Vacas, 2400 m, 30. xii. 1995, Adesmia sp., subalpine / alpine scrub (D. Burckhardt) # 28 (2) (MHNG, dry). Paratypes: Argentina: 6 ♂, 10 ♀, 1 immature, same as holotype (D. Burckhardt) # 28 (2) (BMNH, MHNG, dry, on slide); 4 ♂, 6 ♀, same but 2100 m, 16. i. 1997, Adesmia sp., steppe vegetation (D. Burckhardt) # 8 (3) (NHMB, dry); 24 ♂, 29 ♀, 9 immatures, same but km 12 Las Cuevas to Puente del Inca, 2 800 m, Adesmia sp., subalpine / alpine scrub with Adesmia shrubs (D. Burckhardt) # 7 (1) (NHMB, dry, on slide, 70 % ethanol).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7787754FC6097EFF53F92C.taxon	description	Description. Coloration. Head including genal processes yellow to brown, genae yellow to black, vertex sometimes with orange to brownish pattern; clypeus dark brown. Eyes yellow to black, ocelli red. Antenna brownish, gradually becoming darker, segments 8 – 10 entirely dark brown, some specimens with evenly brown antenna. Pronotum pale yellow to brown, sometimes dark orange to brown in the middle; mesopraescutum pale yellow to brown, often with two dark orange to brown patches along the fore margin and two orange transverse stripes posteriorly; mesoscutum yellow to orange with four broad and, in the middle, one narrow orange to brown longitudinal stripes; mesoscutellum pale yellow along the margin, orange in the middle, sometimes entirely brown. Metanotum orange to brown. Forewing with yellow to brown veins and dirty yellowish membrane with indistinct to distinct brown pattern consisting of patch along vein Cu 1 b and scattered dots in apical third of the wing, often distinctly confluent along the veins along the margin; often with patches in cells c + sc and cu 2. Legs yellow to brown, with darker femora and distal tarsal segments, meracanthus of metacoxa yellow to orange. Abdomen orange to dark brown; terminalia yellow to dark brown. Females often slightly lighter with ventrally lighter abdomen. Teneral specimens lighter, general colour of body yellow; antenna dirty yellow, gradually becoming darker; forewing with indistinct brownish pattern in apical half. Structure. Head, in profile, moderately to strongly inclined from longitudinal body axis (45 – 90 °). Vertex subtrapezoidal with indented foveae, anteriorly produced into transverse lobe on either side of mid-line, with raised hind margin around lateral ocelli, covered with short setae; genal processes conical, slender, subacute apically, slightly shorter than vertex, covered with moderately long setae. Pronotum with one pronounced lateral and one relatively shallow sublateral tubercles on either side. Forewing oblong-oval, narrowly rounded apically; vein C + Sc hardly curved, pterostigma long, vein Rs weakly sinuous, almost straight apically; vein M about as long as either of veins M 1 + 2 and M 3 + 4; surface spinules absent; radular spinules covering triangular areas along the margin of cells r 2, m 1, m 2 and cu 1. Metatibia with 6 – 7 apical spurs. Terminalia. Male. Proctiger tubular; sparsely covered with moderately long setae. Subgenital plate short, subglobular; with sparsely spaced moderately long setae. Paramere narrowly lamellar, weakly sinuous apically, posterior margin slightly convex in apical two thirds; with apico-anterior process on pedicel, and apically sclerotised median tooth; outer face sparsely covered with moderately long setae mostly in apical half, inner face densely, evenly covered with moderately long setae. Distal segment of aedeagus moderately elongate, weakly expanding towards apex; with long anterior process and two small apico-posterior tubercles; lateral lobes moderately long, dilated towards apex which is concave. — Female. Proctiger cuneate, pointed apically; dorsal margin, in profile, convex, with median indentation; densely covered with moderately long setae. Subgenital plate cuneate, with long apical process; sparsely covered with moderately long setae in apical part and along ventral margin, dorsal margin with a bristle. Host-plant. Adesmia sp. (Fabaceae).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7787754FC6097EFF53F92C.taxon	distribution	Distribution. Argentina (Mendoza). Derivation of name. Named after the Province of Mendoza (Argentina) where the type series was collected.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7787754FC6097EFF53F92C.taxon	discussion	Comments. Russelliana mendozae resembles R. monticola, setosa and vinculipennis in the presence of a brown pattern on the forewing membrane, in a narrowly lamellar paramere bearing an apico-anterior process on a pedicel, and a median tooth, in a distal segment of the aedeagus bearing an anterior process, two small apicoposterior tubercles and lateral lobes dilated towards apex, in a cuneate female proctiger and subgenital plate bearing an apical process. R. mendozae differs from R. monticola and setosa in the absence of a median hump of the paramere, and from R. setosa and vinculipennis in a forewing pattern restricted mostly to its apical part. It differs from R. setosa in less dense and shorter setae on the female terminalia, and from R. vinculipennis in the absence of surface spinules in the apical part of the forewing membrane, a longer anterior process of the distal segment of the aedeagus, and a longer apical process of the female subgenital plate. Russelliana monticola sp. nov. (Figs 9 L, 14 A, 18 I, 23 I, 28 C, 32 G)	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7787754FC6097EFF53F92C.taxon	materials_examined	Material examined. Holotype ♂: Chile: III Region, Province Copiapó, Quebrada de Paipote, 20 km W Laguna Santa Rosa, 27 ° 05 ' S 69 ° 12 ' W, 3900 m, 12. xii. 1993, Adesmia hystrix, alpine scrub (D. Burckhardt) # 28 (MHNG, dry). Paratypes: Chile: 19 ♂, 12 ♀, 1 immature, same as holotype (D. Burckhardt) # 28 (BMNH, MHNG, NHMB, dry); 4 ♂, same but 27 ° 05 ' S 69 ° 20 ' W, 3500 m, Adesmia hystrix, gully with Adesmia shrubs (D. Burckhardt) # 29 (MHNG, dry); 8 ♂, 6 ♀, IV Region, Province Elqui, Baños del Toro, ca 170 km E La Serena, 29 ° 50 ' S 70 ° 01 ' W, 3000 m, 3. xii. 1993, Adesmia hystrix, dry scrub with some isolated shrubs of Adesmia and Ephedra (D. Burckhardt) # 4 (MHNG, dry); 25 ♂, 19 ♀, 1?, same but La Laguna, ca 120 km E La Serena, 2800 – 3000 m, 17. xii. 1995, Adesmia sp., scattered shrubs (D. Burckhardt) # 4 (1) (MHNG, dry, on slide, 70 % ethanol).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7787754FC6097EFF53F92C.taxon	description	Description. Coloration. Head including genal processes yellow to brown, genae brown to black, vertex sometimes with orange to brownish pattern; clypeus dark brown. Eyes yellow to black, ocelli red. Antenna brownish, gradually becoming darker from base to apex, segments 8 – 10 entirely dark brown, some specimens with evenly brown antenna. Pronotum pale yellow to brown, sometimes dark orange to brown in the middle; mesopraescutum pale yellow to brown, often with two dark orange to brown patches along the fore margin and two orange transverse stripes posteriorly; mesoscutum yellow to orange with four broad and, in the middle, one narrow orange to brown longitudinal stripes; mesoscutellum pale yellow along the margin, orange in the middle, sometimes entirely brown. Metanotum orange to brown. Forewing with yellow to brown veins and dirty yellowish membrane with indistinct to distinct brown pattern consisting of patch along vein Cu 1 b and scattered dots in apical three quarters of the wing; sometimes with pale patches in cells c + sc and cu 2. Legs yellow to brown with darker femora and distal tarsal segments, meracanthus of metacoxa yellow to orange. Abdomen orange to dark brown; terminalia yellow to dark brown. Females often slightly lighter with ventrally lighter abdomen. Teneral specimens lighter, general colour of body yellow; antenna dirty yellow, gradually becoming darker; forewing with indistinct brownish pattern in apical half. Structure. Head, in profile, moderately to strongly inclined from longitudinal body axis (45 – 90 °). Vertex subtrapezoidal with indented foveae, anteriorly produced into transverse lobe on either side of mid-line, with raised hind margin around lateral ocelli, covered with short setae; genal processes conical, slender, subacute apically, slightly shorter than vertex, covered with moderately long setae. Pronotum with one pronounced lateral and one relatively shallow sublateral tubercles on either side. Forewing oblong-oval, broadly, unevenly rounded apically; vein C + Sc weakly curved, pterostigma long, vein Rs straight apically; vein M about as long as either of veins M 1 + 2 and M 3 + 4; surface spinules absent; radular spinules covering triangular areas along the margin of cells r 2, m 1, m 2 and cu 1. Metatibia with 6 – 8 apical spurs. Terminalia. Male. Proctiger tubular; sparsely covered with moderately long setae in apical half. Subgenital plate short, subglobular; with sparsely spaced moderately long setae. Paramere narrowly lamellar; with short apicoanterior process on pedicel, and median hump with apically sclerotised median tooth; apical part of posterior edge produced into small lobe; outer face sparsely covered with moderately long setae mostly in posterior part, inner face sparsely covered with moderately long setae. Distal segment of aedeagus moderately elongate, weakly expanding towards apex; with moderately long anterior process and two small apico-posterior tubercles; lateral lobes moderately long, slightly dilated towards apex which is concave. — Female. Proctiger cuneate, pointed apically; dorsal margin, in profile, convex; densely covered with short setae in apical part. Subgenital plate cuneate, with moderately long apical process; densely covered with moderately long to long setae in ventral part. Host-plant. Adesmia hystrix Phil. (Fabaceae).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7787754FC6097EFF53F92C.taxon	distribution	Distribution. Chile (III – IV Regions). Derivation of name. From Latin monticolus = mountain-dwelling referring to montane habitats where the species was collected.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7787754FC6097EFF53F92C.taxon	discussion	Comments. Russelliana monticola resembles R. mendozae, setosa and vinculipennis, see comments under R. mendozae. R. monticola differs from R. mendoza and vinculipennis in the presence of a median hump of the paramere, and from R. setosa and vinculipennis in a forewing pattern restricted mostly to its apical part. It differs from R. setosa in less dense and shorter setae on the female terminalia, and from R. vinculipennis in the absence of surface spinules in the apical part of the forewing membrane, a longer anterior process of the distal segment of the aedeagus, and a longer apical process of the female subgenital plate. Russelliana nana sp. nov. (Figs 9 M, 14 B, 19 A, 24 A, 28 D, 32 H)	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7787754FC6097EFF53F92C.taxon	materials_examined	Material examined. Holotype ♂: Argentina: Province Mendoza, above Villa Vicencia, 50 km NW Mendoza, 1800 – 2200 m, 18. i. 1997, Asteraceae, low scrub (D. Burckhardt) # 15 (8) (MHNG, dry). Paratypes: Argentina: 11 ♂, 20 ♀, same as holotype (D. Burckhardt) # 15 (8) (MHNG, dry, on slide, 70 % ethanol); 1 ♀, same but Mendoza Valley, 27 km Uspallata to Potrerillos, 1500 m, 19. i. 1997, Asteraceae, open sclerophyll scrub (D. Burckhardt) # 16 (2) (NHMB, dry).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7787754FC6097EFF53F92C.taxon	description	Description. Coloration. General colour of body pale yellow. Head including genal processes whitish to pale yellow; clypeus yellow to brown. Eyes yellow to grey, ocelli yellow. Antenna yellow, segments 3 – 8 with pale brown apices, segments 9 – 10 entirely brown. Thorax whitish to pale yellow. Forewing with bright yellow veins and pale yellow membrane. Legs yellow, meracanthus of metacoxa yellow. Abdomen yellow to brownish, slightly ligther ventrally; terminalia yellow to brownish. Female terminalia darker in apical third. Structure. Head, in profile, moderately to strongly inclined from longitudinal body axis (45 – 90 °). Vertex subtrapezoidal with indented foveae, anteriorly produced into transverse lobe on either side of mid-line, with slightly raised hind margin around lateral ocelli, covered with short setae; genal processes conical, slender, subacute or slightly blunt apically, slightly shorter than vertex, covered with moderately long setae. Forewing oblong-oval, broadly, unevenly rounded apically; vein C + Sc weakly curved, pterostigma long, vein Rs almost straight apically; vein M shorter than either of veins M 1 + 2 and M 3 + 4; surface spinules faint, present in all cells, leaving no spinule-free stripes along the veins, densely and irregularly spaced; radular spinules covering triangular areas along the margin of cells r 2, m 1, m 2 and cu 1. Metatibia with 7 apical spurs. Terminalia. Male. Proctiger tubular; densely covered with moderately long setae. Subgenital plate short, subglobular; with sparsely spaced long setae. Paramere oblong-oval, irregularly rounded apically, with constricted base; with recurved, claw-like apico-anterior process on very short pedicel, and strongly bulged apico-posterior lobe with apically sclerotised ridge; lobe situated exterior to process; both process and lobe of subequal length; outer face sparsely covered with long setae mostly in apical half, inner face densely, evenly covered with moderately long setae. Distal segment of aedeagus moderately elongate, weakly expanding towards apex; with short beak-like anterior process and one horn-shaped apico-posterior tubercle; lateral lobes short, with entire apical margin. — Female. Proctiger cuneate, subacute apically; dorsal margin, in profile, conspicuously bent in apical third; densely covered with short thick bristles in apical half. Subgenital plate cuneate, with very long apical process; sparsely covered with moderately long setae and with few short thick bristles in apical part. Host-plant. Unknown.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7787754FC6097EFF53F92C.taxon	distribution	Distribution. Argentina (Mendoza). Derivation of name. From Latin nanus = dwarf referring to the small body size.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7787754FC6097EFF53F92C.taxon	discussion	Comments. Russelliana nana resembles R. queirozae, in a pale yellow body colour, in an oblong-oval paramere bearing a recurved, claw-like apico-anterior process on a pedicel, situated interiorly to an apico-posterior lobe, in a distal segment of the aedeagus bearing short lateral lobes with an entire apical margin, in a cuneate female proctiger with its dorsal margin conspicuously bent in its apical third and bearing short thick bristles, and in a cuneate subgenital plate bearing a very long apical process. R. nana differs from R. queirozae in long genal processes, a shape of the forewing which is broadest in the apical third, a paramere with a constricted base bearing a process on a very short pedicel, a distal segment of the aedeagus bearing a short beak-like anterior process and a large, horn-shaped apico-posterior tubercle, and a female subgenital plate bearing short thick bristles in its apical third.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7A87714FC609CDFEBBFA43.taxon	materials_examined	Material examined. Type material. Holotype ♂: Bolivia: Department Chuquisaca, Province Nor Cinti, Padcoya to Camargo, 2800 – 3200 m, 26 – 28. xii. 1984 (L. E. Peña) (MHNG, dry). Paratypes: Bolivia: 4 ♂, 8 ♀, same as holotype (L. E. Peña) (MHNG, NHMB, dry, on slide).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7A87714FC609CDFEBBFA43.taxon	description	Description. Coloration. General colour of body dark brown to black. Head, genal processes and thorax dark brown to black; clypeus black. Eyes red to black, ocelli orange to red. Antenna pale to dirty yellow, segments 1, 9 and 10 entirely black, segment 2 black at base, segments 3 – 8 with black apices. Forewing with dark brown veins and evenly brown membrane. Legs dirty yellow to brownish, with black femora and distal tarsal segments, meracanthus of metacoxa pale yellow. Abdomen and terminalia brown to black. Female proctiger black in apical third. Teneral specimens orange laterally. Structure. Head, in profile, moderately to strongly inclined from longitudinal body axis (45 – 90 °). Vertex subtrapezoidal with indented foveae, anteriorly produced into transverse tubercle on either side of mid-line, with raised hind margin around lateral ocelli, covered with short setae; genal processes conical, relatively slender and subacute apically, distinctly shorter than vertex, covered with moderately long setae. Forewing oval, broadly, evenly rounded apically; vein C + Sc weakly curved, pterostigma long, vein Rs weakly sinuous, slightly curved to fore margin apically; vein M about as long as either of veins M 1 + 2 and M 3 + 4; surface spinules very dense, present in all cells, leaving very narrow spinule-free stripes along the veins, irregularly spaced; faint in cell c + sc and absent in its basal third; radular spinules covering rounded areas along the margin of cells r 2, m 1, m 2 and cu 1. Metatibia with 6 – 8 apical spurs. Terminalia. Male. Proctiger tubular; sparsely covered with moderately long setae. Subgenital plate short, subglobular; with sparsely spaced moderately long setae. Paramere irregularly subtrapezoidal; with sickle-shaped apico-anterior process on very short pedicel and slightly bulged, apically sinuous apico-posterior lobe with apically sclerotised median tooth; both process and lobe of subequal length; outer face sparsely covered with moderately long setae mostly in posterior half, inner face densely, evenly covered with long setae. Distal segment of aedeagus moderately elongate, weakly expanding towards apex; with moderately long anterior process, one apical and one apico-posterior tubercles, the latter being curved forward; lateral lobes long, strongly dilated towards apex which is concave. — Female. Proctiger cuneate, pointed apically; dorsal margin, in profile, slightly convex; sparsely covered with relatively short setae. Subgenital plate cuneate, with short apical process; sparsely covered with relatively short setae in apical half, dorsal margin with a row of bristles. Host-plant. Unknown.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7A87714FC609CDFEBBFA43.taxon	distribution	Distribution. Reported from Bolivia (Chuquisaca) (Burckhardt 1987).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7A87714FC609CDFEBBFA43.taxon	discussion	Comments. Russelliana nigra resembles R. chorizanthis, disparilis, rutila, similis and solanicola; see comments under R. chorizanthis. R. nigra differs from the five species in an evenly brown forewing membrane, from R. chorizanthis, rutila, similis and solanicola in the absence of a median hump of the paramere, and from R. disparilis and similis in the presence of surface spinules in the apical part of the forewing membrane. It differs from R. chorizanthis in a shorter female terminalia, and from R. disparilis in a smaller apico-posterior lobe of the paramere and an apically subacute anterior process of the distal segment of the aedeagus. Russelliana nolanae sp. nov. (Figs 9 O, 14 D, E, 19 C, 24 C, 28 F, 33 A)	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7A87714FC609CDFEBBFA43.taxon	materials_examined	Material examined. Holotype ♂: Chile: III Region, Province Chañaral, Parque Nacional Pan de Azúcar, sector Las Lomitas, Quebrada Las Chicas, 26 ° 05 ' S 70 ° 36 ' W, 800 m, 9. xii. 1993, N. cf. aplocaryoides / N. cf. confinis / N. cf. peruviana / Nolana cf. sedifolia, quebrada vegetation (D. Burckhardt) # 20 (MHNG, dry). Paratypes: Chile: 5 ♂, 4 ♀, III Region, Province Chañaral, Parque Nacional Pan de Azúcar, Quebrada Chango Aracena, sector Mirador, 26 ° 05 ' S 70 ° 37 ' W, 300 m, 8. xii. 1993, Nolana cf. sedifolia, semidesert (D. Burckhardt) # 19 (MHNG, NHMB, dry); 1 ♂, same but Quebrada del Castillo, 26 ° 08 ' S 70 ° 38 ' W, 100 m, Nolana cf. sedifolia (D. Burckhardt) # 18 (MHNG, dry); 9 ♂, 6 ♀, same but Quebrada Pan de Azúcar, 26 ° 07 ' S 70 ° 36 ' W, 300 m, 9. xii. 1993, Nolana cf. sedifolia, quebrada vegetation (D. Burckhardt) # 21 (MHNG, NHMB, dry); 6 ♂, 16 ♀, 1 immature, 1?, same as holotype (D. Burckhardt) # 20 (BMNH, MHNG, NHMB, dry); 7 ♂, 1 ♀, same but Nolana cf. sedifolia (D. Burckhardt) # 20 (MHNG, dry); 1 ♂, 1 ♀, same but Province Huasco, Panamericana km 565, 29 ° 20 ' S 71 ° 01 ' W, 600 m, 6. xii. 1993, Nolana cf. sedifolia, steppe (D. Burckhardt) # 13 (MHNG, dry); 11 ♂, 27 ♀, 2 immatures, IV Region, Province Elqui, Panamericana km 550, 85 km N La Serena, 29 ° 25 ' S 71 ° 10 ' W, 200 m, 6. xii. 1993, Nolana cf. sedifolia, steppe (D. Burckhardt) # 12 (MHNG, NHMB, dry, on slide); 1 ♀, same but Province Limarí, Parque Nacional Fray Jorge, 250 m, 7 – 9. xii. 1990, Baccharis salicina [Pingraea viscosa], open mediterranean scrub (D. Agosti & D. Burckhardt) # 2 (MHNG, dry).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7A87714FC609CDFEBBFA43.taxon	description	Description. Coloration. Dimorphic, male slightly darker, general body colour yellow to brownish; female slightly lighter, general body colour yellow to orange, forewing pattern paler than in males. Some specimens with yellow-spotted brown to dark brown vertex and thorax. Head including genal processes pale to bright yellow, genae pale yellow to brownish; clypeus yellow to brown. Eyes yellow, ocelli orange to red. Antenna yellow, segments 3 – 8 with dark brown apices, segments 9 – 10 entirely dark brown. Pronotum pale to bright yellow, same colour as vertex and distinctly paler than mesonotum; mesopraescutum pale to bright yellow, often with two orange to brownish patches along the fore margin and sometimes with scattered brownish patches over entire surface; mesoscutum pale to bright yellow, often with four broad orange to brown longitudinal stripes; mesoscutellum pale yellow, sometimes orange to brown in the middle. Metanotum pale yellow to brown. Forewing with whitish to dark brown veins and membrane with distinct pale to dark brown pattern different for males and females. Male forewing membrane with dark brown pattern consisting of confluent dots, sometimes forming two well-defined broad transverse stripes: shorter submarginal one stretching from apical part of costal vein to base of vein M 1 + 2 and longer median one stretching from median part of vein C + Sc, along the veins M + Cu and Cu, to base of vein Cu 1 b; membrane between two bands colourless with dark brown dots scattered over entire surface and sometimes on veins. Female forewing membrane with pale brown pattern consisting of dark, frequently confluent dots and lighter patches scattered over entire surface, sometimes patches leaving light, almost indistinct areas in cells r 2, m 1 and m 2 along the margin; patch along vein Cu 1 b sometimes reaching vein M. Legs pale yellow with darker femora, meracanthus of metacoxa pale yellow. Abdomen and terminalia pale yellow to brownish, sometimes lighter ventrally. Paramere and female terminalia with dark apices. Structure. Head, in profile, weakly inclined from longitudinal body axis (<45 °). Vertex trapezoidal, flat with indented foveae, anteriorly produced into transverse lobe on either side of mid-line, hind margin around lateral ocelli not raised, covered with short setae; genal processes short, swollen, slightly conical apically, covered with moderately long setae. Pronotum with two pronounced lateral and one relatively shallow sublateral tubercles on either side. Forewing rhomboidal; vein C + Sc strongly, unevenly curved, pterostigma long, vein Rs straight, strongly curved to fore margin apically; vein M about as long as either of veins M 1 + 2 and M 3 + 4; surface spinules very dense, present in all cells, leaving no spinule-free stripes along the veins, irregularly spaced, less developed on unpigmented areas; radular spinules not pronounced. Metatibia with 6 apical spurs. Terminalia. Male. Proctiger barrel-shaped; sparsely covered with moderately long setae in apical two thirds. Subgenital plate elongate; with few moderately long setae restricted to apical and ventral part. Paramere shortly lamellar; with long recurved apico-anterior process on pedicel, broadly rounded apico-posterior lobe with apically sclerotised median tooth; lobe situated exterior to process; both process and lobe of subequal length; outer face densely covered with moderately long setae mostly in apical half, inner face covered with long thick bristles anteriorly and apically. Distal segment of aedeagus massive, broadly, unevenly expanding towards apex, strongly inflated anteriorly; with one small apico-posterior tubercle; lateral lobes moderately long, slightly dilated towards apex which is rounded and with frayed margin. — Female. Proctiger cuneate, pointed apically; dorsal margin, in profile, slightly convex; densely covered with long setae. Subgenital plate subglobular, with tiny apical process; densely covered with long setae in apical part and along ventral margin, dorsal margin with a row of bristles. Host-plants. Nolana cf. aplocaryoides (Gaudich.) I. M. Johnst. / N. cf. confinis (I. M. Johnst.) I. M. Johnst. / N. cf. peruviana (Gaudich.) I. M. Johnst. and N. cf. sedifolia Poepp. (Solanaceae).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7A87714FC609CDFEBBFA43.taxon	distribution	Distribution. Chile (III – IV Regions). Derivation of name. Named after its host-plant genus Nolana.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7A87714FC609CDFEBBFA43.taxon	discussion	Comments. Russelliana nolanae resembles R. adelpha and globosa; see comments under R. adelpha. R. nolanae differs from R. adelpha in a less extensive pattern on the male forewing membrane, and from R. globosa in the lateral lobes of the distal segment of the aedeagus which are apically rounded and dilated towards apex, in a cuneate female proctiger and subglobular subgenital plate bearing an apical process. Russelliana pallida sp. nov. (Figs 10 A, 14 F, 19 D, 24 D, 28 G, 33 B)	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7A87714FC609CDFEBBFA43.taxon	materials_examined	Material examined. Holotype ♂: Chile: III Region, Province Huasco, ca 10 km W Domeyko, 28 ° 57 ' S 70 ° 55 ' W, 600 m, 6. xii. 1993, Adesmia cf. kingii, steppe (D. Burckhardt) # 14 (MHNG, dry). Paratypes: Chile: 6 ♂, 2 ♀, 2 immatures, III Region, Province Chañaral, 20 – 25 km W Pedernales, Cordillera de Domeyko, 36 ° 23 ' S 69 ° 25 ' W, 2500 – 2700 m, 10. xii. 1993, Adesmia kingii, semidesert (D. Burckhardt) # 23 (MHNG, dry); 5 ♂, 7 ♀, same but Province Copiapó, 30 km NE Copiapó, 27 ° 19 ' S 70 ° 12 ' W, 1000 m, 12. xii. 1993, Adesmia cf. kingii, desert with scattered shrubs (D. Burckhardt) # 26 (MHNG, dry); 5 ♂, 5 ♀, same but Potrero Seco, 27 ° 40 ' S 70 ° 15 ' W, 900 m, 13. xii. 1993, Adesmia cf. kingii, quebrada vegetation (D. Burckhardt) # 30 (MHNG, dry); 5 ♂, 3 ♀, same but Province Huasco, Panamericana km 565, 29 ° 20 ' S 71 ° 01 ' W, 600 m, 6. xii. 1993, Adesmia cf. kingii, steppe (D. Burckhardt) # 13 (MHNG, dry); 1 ♂, 2 ♀, same as holotype (D. Burckhardt) # 14 (MHNG, dry); 2 ♂, 3 ♀, same but 20 km S Vallenar, 28 ° 40 ' S 70 ° 40 ' W, 750 m, Adesmia cf. kingii, quebrada (D. Burckhardt) # 15 (MHNG, dry); 5 ♂, 4 ♀, same but 35 km N Vallenar, 28 ° 20 ' S 70 ° 40 ' W, 600 m, 7. xii. 1993, Adesmia cf. kingii, semidesert (D. Burckhardt) # 16 (MHNG, dry); 1 ♀, IV Region, Province Elqui, along road from Condoriaco to Almte Latorre, 29 ° 40 ' S 70 ° 53 ' W, 1200 m, 4. xii. 1993, Adesmia sp., quebrada vegetation (D. Burckhardt) # 8 (MHNG, dry); 1 ♂, same but 15 km SW Viñita Baja, 29 ° 50 ' S 70 ° 50 ' W, 450 m, Adesmia sp., quebrada with sparse scrub (D. Burckhardt) # 6 (MHNG, dry); 12 ♂, 13 ♀, same but from Viñita Baja to Condoriaco, 29 ° 45 ' S 70 ° 50 ' W, 1000 – 1400 m, Adesmia argentea, dry slope with Trichocereus and various shrubs (D. Burckhardt) # 7 (BMNH, MHNG, dry); 1 ♂, 1 ♀, same but Adesmia sp. (D. Burckhardt) # 7 (MHNG, dry); 2 ♀, same but S Paihuano, Elqui Valley, 30 ° 02 ' S 70 ° 30 ' W, 1000 m, 5. xii. 1993, Adesmia dichotoma, quebrada with isolated shrubs (D. Burckhardt) # 9 (MHNG, dry); 11 ♂, 4 ♀, same but 5 – 10 km S Vicuña, 30 ° 05 ' S 70 ° 40 ' W, 750 – 950 m, Adesmia kingii, semidesert (D. Burckhardt) # 11 (MHNG, dry); 1 ♂, 2 ♀, same but Panamericana km 550, 85 km N La Serena, 29 ° 25 ' S 71 ° 10 ' W, 200 m, 6. xii. 1993, Adesmia cf. kingii, steppe (D. Burckhardt) # 12 (MHNG, dry); 10 ♂, 11 ♀, same but 15 – 25 km S Vicuña, 30 ° 15 ' S 70 ° 40 ' W, 1300 – 1700 m, 14. xii. 1993, Adesmia argentea (D. Burckhardt) # 33 (MHNG, dry); 5 ♂, 5 ♀, same but Adesmia pedicellata (D. Burckhardt) # 33 (MHNG, dry); 4 ♂, 2 ♀, same but 20 km S Vicuña towards Hurtado, nr puente El Pangue, 1600 m, 18. xii. 1995, Adesmia sp., semidesert and quebrada with water (D. Burckhardt) # 8 (2) (MHNG, dry); 6 ♂, 8 ♀, same but 10 km S Vicuña towards Hurtado, 900 m, Adesmia sp., semidesert with a few scattered Prosopis chilensis trees in quebrada (D. Burckhardt) # 7 (3) (MHNG, dry, on slide, 70 % ethanol); 1 ♂, 2 ♀, same but ca 45 km ENE La Serena, Viñita Baja to Condoriaco, 800 – 1000 m, 19. xii. 1995, Adesmia sp., quebrada and mountain slope (D. Burckhardt) # 10 (4) (MHNG, dry); 1 ♂, 2 ♀, same but ca 40 km E La Serena, 5 km SW Viñita Baja, 450 km, Adesmia sp., quebrada (D. Burckhardt) # 9 (3) (MHNG, dry); 2 ♂, same but Elqui Valley, nr Rivadavia, 750 m, 20. xii. 1995, Adesmia sp., semidesert with Baccharis shrubs and scattered trees in lowest part (D. Burckhardt) # 12 (1) (MHNG, dry); 8 ♂, 14 ♀, V Region, Province Petorca, Alicahue to Chincolco, E Cabildo to La Ligua, 700 – 1250 m, 21 – 26. xii. 1998, Adesmia sp., semidesert and Acacia caven steppe (D. Burckhardt) # 3 (2) (NHMB, dry); 3 ♂, 3 ♀, same but Province San Felipe de Aconcagua, 5 km N El Tártaro, 30 km N San Felipe, 32 ° 30 ' S 70 ° 42 ' W, 1100 m, 26. xii. 1993, Adesmia cf. glutinosa, Acacia caven steppe (D. Burckhardt) # 37 (MHNG, dry); 5 ♂, 8 ♀, 1 immature, same but Putaendo, 10 km N San Felipe, 32 ° 37 ' S 70 ° 42 ' W, 700 m, Adesmia cf. pedicellata, river bed, quebrada vegetation (D. Burckhardt) # 35 (MHNG, dry); 3 ♂, 3 ♀, 4 immatures, same but 15 km E Llay-Llay, 32 ° 52 ' S 70 ° 51 ' W, 600 m, 28. xii. 1993, Adesmia cf. glutinosa, Acacia caven steppe (D. Burckhardt) # 39 (MHNG, NHMB, dry); 2 ♂, 1 ♀, same but 10 km N San Felipe, 700 m, 15. xii. 1995, Adesmia sp., river bed, quebrada vegetation (D. Burckhardt) # 1 (2) (MHNG, dry); 3 ♂, 6 ♀, same but km 10 on road El Tártaro to El Guayacán, 1400 m, 24. xii. 1995, Adesmia sp., Acacia caven steppe (D. Burckhardt) # 24 (4) (MHNG, dry); 1 immature, same but (D. Burckhardt) # 24 (MHNG, dry); 1 ♀, same but 10 km N San Felipe, 700 m, 27. xii. 1995, river bed, quebrada vegetation (D. Burckhardt) # 27 (2) (MHNG, dry); 4 ♂, 6 ♀, same but 8 km N San Felipe, 12 – 13. i. 1997, Adesmia sp., dry river bed of Río Aconcagua, quebrada vegetation (D. Burckhardt) # 4 (4) (MHNG, on slide, 70 % ethanol); 1 ♀, same but El Asiento, 10 km NW San Felipe, 900 m, 13 – 20. i. 1997, Adesmia sp., mediterranean scrub (D. Burckhardt) # 5 (10) (NHMB, dry); 14 ♂, 10 ♀, 1?, same but km 20 Resguardo de Los Patos to Paso del Rubio, 1800 m, 1. i. 1999, Adesmia cf. glutinosa, semidesert and subalpine scrub (D. Burckhardt) # 11 (2) (NHMB, dry, on slide, 70 % ethanol); 11 ♂, 16 ♀, same but Resguardo de Los Patos, 32 ° 29.2 ' S 70 ° 33.9 ' W, 1350 m, 6. iii. 2009, Adesmia cf. glutinosa, Acacia caven scrub (D. Burckhardt) # 14 (4) (NHMB, dry, 70 % ethanol); 2 ♀, Region Metropolitana, Province Chacabuco, Tiltil, 5 km N Tiltil, 33 ° 01 ' S 70 ° 56 ' W, 700 m, 28. xii. 1993, Adesmia cf. confusa, open sclerophyll scrub (D. Burckhardt) # 40 (MHNG, dry). Additional material. Chile: 1 ♀, V Region, Province San Felipe de Aconcagua, Termas de Jahuel, 1000 m, 21. i. 1997, Acacia caven steppe with some planted exotic trees (D. Burckhardt) # 17 (NHMB, dry).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7A87714FC609CDFEBBFA43.taxon	description	Description. Coloration. Head including genal processes pale yellow to orange, genal processes sometimes brownish at base; clypeus yellow to brown. Eyes yellow to greyish, ocelli red. Antenna yellow, segments 3 – 8 with dark brown apices, segments 9 – 10 entirely dark brown. Pronotum of the same colour as vertex, distinctly paler than mesonotum; mesopraescutum pale to bright yellow with two dark orange patches along the fore margin and two light orange transverse stripes posteriorly; mesoscutum pale to bright yellow with four broad and, in the middle, one narrow orange longitudinal stripes; mesoscutellum pale yellow along the margin, orange in the middle. Metanotum orange with broad yellow longitudinal stripe in the middle. Forewing with yellowish veins and colourless membrane with pale brown, often indistinct pattern consisting of broad stripe parallel to apical margin stretching from apical part of costal vein to apex of vein Cu 1 a, leaving light areas in cells r 2, m 1 and m 2 along the margin, and patch along vein Cu 1 b; sometimes with brown stripe in the middle of the wing stretching from vein R 1 to vein Cu 1 b and brown patch in apical half of cell cu 2. Legs pale to bright yellow, meracanthus of metacoxa yellow. Abdomen and terminalia pale yellow to brown. Female terminalia with dark apex. Teneral specimens lighter, general colour of body pale yellow; forewing pattern pale brown. Structure. Head, in profile, strongly inclined from longitudinal body axis (> 45 °). Vertex subtrapezoidal with indented foveae, anteriorly slightly produced into transverse tubercle on either side of mid-line, with raised hind margin around lateral ocelli, covered with short setae; genal processes conical, slender, subacute apically, slightly shorter than vertex, covered with long setae. Pronotum with one pronounced lateral and one relatively shallow sublateral tubercles on either side. Forewing oblong-oval, broadly, unevenly rounded apically; vein C + Sc weakly curved, pterostigma long, vein Rs almost straight apically; vein M longer than either of veins M 1 + 2 and M 3 + 4; surface spinules present in all cells, leaving narrow spinule-free stripes along the veins, sparsely spaced and forming hexagonal pattern; radular spinules covering triangular areas along the margin of cells r 2, m 1, m 2 and cu 1. Metatibia with 7 apical spurs. Terminalia. Male. Proctiger tubular; sparsely covered with moderately long setae. Subgenital plate short, subglobular; with sparsely spaced moderately long setae. Paramere narrowly lamellar, posterior margin slightly convex; with long apico-anterior process lacking pedicel, and apically sclerotised median tooth; outer face sparsely covered with moderately long setae mostly in posterior part, inner face sparsely covered with moderately long setae. Distal segment of aedeagus moderately elongate, expanding towards apex; with short anterior process, one small and one horn-shaped apico-posterior tubercles; lateral lobes moderately long, slightly dilated towards apex which is concave. — Female. Proctiger cuneate, pointed apically; dorsal margin, in profile, almost straight or slightly convex; sparsely covered with moderately long setae. Subgenital plate cuneate, with short apical process; sparsely covered with moderately long setae, dorsal margin with few bristles. Host-plants. Adesmia argentea Meyen, A. cf. confusa Ulibarri, A. dichotoma Clos, A. cf. glutinosa Hook. & Arn., A. cf. kingii Phil. and A. cf. pedicellata Hook. & Arn. (Fabaceae).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7A87714FC609CDFEBBFA43.taxon	distribution	Distribution. Chile (III – V Regions, Region Metropolitana). Derivation of name. From Latin pallidus = pale referring to the pale forewing pattern.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7A87714FC609CDFEBBFA43.taxon	discussion	Comments. Russelliana pallida resembles R. longicauda; see comments under R. longicauda. R. pallida differs from R. longicauda in the presence of surface spinules in the apical part of the forewing membrane, a long apico-anterior process of the paramere, a longer anterior process situated in the apical part of the distal segment of the aedeagus bearing longer lateral lobes, and a shorter female terminalia with a subgenital plate bearing a short apical process.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7E876C4FC60978FC39FCA4.taxon	materials_examined	Material examined. Type material. Holotype ♂: Argentina: Province Jujuy, Iturbe, 31. xii. 1984 (L. E. Peña) (MHNG, dry). Paratypes: Argentina: 22 ♂, 21 ♀, same as holotype (L. E. Peña) (BMNH, MHNG, NHMB, dry, on slide).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7E876C4FC60978FC39FCA4.taxon	description	Description. Coloration. Head dirty yellow, genal processes pale yellow with dark tips or entirely brown, genae brown to black, vertex sometimes with variable orange to brown pattern or entirely brown; clypeus brown to dark brown. Eyes yellow to brown, ocelli orange to red. Antenna yellow to brownish, segments 3 – 7 with brown apices, segments 8 – 10 entirely dark brown. Pronotum of the same colour as vertex, sometimes with orange to brown patch in the middle; mesopraescutum dirty yellow, with two orange to brown patches along the fore margin and two orange to brown transverse stripes posteriorly, sometimes entirely brown; mesoscutum dirty yellow with four broad and, in the middle, one narrow dark brown longitudinal stripes; mesoscutellum pale to dirty yellow along the margin, dark brown in the middle. Metanotum pale yellow to dark brown. Forewing with dark brown veins and colourless membrane, sometimes consisting of indistinct brown pattern of one large patch in the apex of cell r 1 and r 2 and one small along vein Cu 1 b; sometimes with few dots in apical two-thirds of the wing. Legs pale yellow to brown, with darker femora and distal tarsal segments, meracanthus of metacoxa pale yellow. Abdomen and terminalia brown to dark brown. Structure. Head, in profile, moderately to strongly inclined from longitudinal axis of body (45 – 90 °). Vertex subtrapezoidal, anteriorly produced into transverse lobe on either side of mid-line, with raised hind margin around lateral ocelli, covered with short setae; genal processes conical, slender, subacute apically, shorter than vertex, covered with moderately long setae. Pronotum with two pronounced lateral tubercles on either side. Forewing oblong-oval, broadly, unevenly rounded apically; vein C + Sc weakly curved, pterostigma long, vein Rs almost straight apically; vein M shorter than either of veins M 1 + 2 and M 3 + 4; surface spinules faint, present in all cells, leaving narrow spinule-free stripes along the veins, sparsely spaced and forming irregular transverse rows mainly in apical part; absent in basal third of cell c + sc; radular spinules covering rounded areas along the margin of cells r 2, m 1, m 2 and cu 1. Metatibia with 7 – 8 apical spurs. Terminalia. Male. Proctiger tubular; densely covered with short setae. Subgenital plate short, subglobular; with densely spaced relatively short setae and with long setae along the ventral margin. Paramere irregularly subtrapezoidal; with apico-anterior process on long pedicel, and strongly bulged apico-posterior lobe with apically sclerotised median tooth; both process and lobe of subequal length; outer face densely covered with moderately long setae mostly in posterior half, inner face relatively densely covered with moderately long setae in apical half and with long setae anteriorly and posteriorly. Distal segment of aedeagus moderately elongate, weakly expanding towards apex; with short beak-like anterior process and two small apico-posterior tubercles; lateral lobes moderately long, slightly dilated towards apex which is concave. — Female. Proctiger cuneate, pointed apically; dorsal margin, in profile, weakly sinuous; sparsely covered with short setae. Subgenital plate cuneate, with moderately long apical process; sparsely covered with short setae in apical half, dorsal margin with a row of bristles. Host-plant. Unknown.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7E876C4FC60978FC39FCA4.taxon	distribution	Distribution. Reported from Argentina (Jujuy) (Burckhardt 1987).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7E876C4FC60978FC39FCA4.taxon	discussion	Comments. Russelliana punctulata resembles R. maculata; see comments under R. maculata. R. punctulata differs from R. maculata in a forewing pattern restricted mostly to its apical part, an apico-posterior lobe of the paramere which is strongly bulged posteriorly, and a short anterior process of the distal segment of the aedeagus. Russelliana queirozae sp. nov. (Figs 10 C, 14 H, 19 F, 24 F, 28 I, 33 D)	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7E876C4FC60978FC39FCA4.taxon	materials_examined	Material examined. Holotype ♂: Brazil: State Paraná, Curitiba, Centro Politécnico of UFPR, 4. i. 2012 (D. Burckhardt & D. L. Queiroz) # 29 (1) (MZSP, dry). Paratypes: Brazil: 1 ♂, 1 ♀, same as holotype (D. Burckhardt & D. L. Queiroz) # 29 (1) (NHMB, on slide); 2 ♀, same but Parque São Lourenço, 25 ° 23.1 ' S 49 ° 15.9 ' W, 940 m, 19. x. 2012 (D. Burckhardt & D. L. Queiroz) # 45 (NHMB, dry, 70 % ethanol); 2 ♂, same but 25 ° 23.0 ' S 49 ° 15.9 ' W, 920 m, 13. ii. 2013 (D. Burckhardt & D. L. Queiroz) # 93 (NHMB, 70 % ethanol).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7E876C4FC60978FC39FCA4.taxon	description	Description. Coloration. General colour of body pale yellow. Head including genal processes whitish to pale yellow; clypeus whitish to pale yellow. Eyes pale yellow to brown, ocelli pale yellow. Antenna pale yellow, segments 3 – 8 with slightly darker apices, segments 9 – 10 entirely brown. Thorax whitish to pale yellow. Forewing with whitish to pale yellow veins and pale yellow membrane, sometimes yellow in the middle of cells in its apical part. Legs whitish to pale yellow, meracanthus of metacoxa whitish to pale yellow. Abdomen and terminalia whitish to pale yellow. Structure. Head, in profile, moderately to strongly inclined from longitudinal body axis (45 – 90 °). Vertex subtrapezoidal with indented foveae, anteriorly produced into transverse lobe on either side of mid-line, with slightly raised hind margin around lateral ocelli, covered with microscopical setae; genal processes very short, conical, subacute apically, covered with short setae. Forewing oblong-oval, narrowly rounded apically; vein C + Sc weakly curved, pterostigma long, vein Rs almost straight apically; vein M longer than either of veins M 1 + 2 and M 3 + 4; surface spinules very dense, present in all cells, leaving no spinule-free stripes along the veins; radular spinules not pronounced. Metatibia with 6 apical spurs. Terminalia. Male. Proctiger tubular; sparsely covered with long setae. Subgenital plate short, subglobular; with sparsely spaced long setae. Paramere oblong-oval, irregularly rounded apically; with recurved, claw-like apicoanterior process on long pedicel, and apico-posterior lobe with apically sclerotized ridge; lobe situated exterior to process and longer than process; outer face sparsely covered with long setae mostly in apical half, inner face densely covered with long setae. Distal segment of aedeagus massive, broadly, unevenly expanding towards apex; with one small apico-posterior tubercle; lateral lobes short, with entire apical margin. — Female. Proctiger cuneate, pointed apically; dorsal margin, in profile, sinuous, conspicuously bent in its apical third; densely covered with short thick bristles in apical half. Subgenital plate cuneate, with very long apical process; sparsely covered with moderately long setae restricted to median part. Host-plant. Unknown.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7E876C4FC60978FC39FCA4.taxon	distribution	Distribution. Brazil (Paraná). Derivation of name. Named in honour of Dalva L. de Queiroz (Embrapa Florestas, Colombo), the collector of this and many other Brazilian psyllid species.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7E876C4FC60978FC39FCA4.taxon	discussion	Comments. Russelliana queirozae resembles R. nana; see comments under R. nana. R. queirozae differs from R. nana in very short genal processes, a shape of the forewing which is broadest in the middle, an oblong-oval paramere bearing an apico-anterior process on a longer pedicel, and a distal segment of the aedeagus broadly expanding towards apex, lacking any anterior process and bearing a small apico-posterior tubercle. It also differs in a female subgenital plate lacking short thick bristles. Russelliana rutila sp. nov. (Figs 10 D, 14 I, 19 G, 24 G, 28 J, 33 E)	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7E876C4FC60978FC39FCA4.taxon	materials_examined	Material examined. Holotype ♂: Chile: VIII Region, Province Bío-Bío, Parque Nacional Laguna del Laja, sector Lagunillas, 1100 m, 21. i. 1996, Tetraglochin alatum, open Austrocedrus forest and sclerophyll scrub (D. Burckhardt) # 56 (7) (MHNG, dry). Paratypes: Chile: 2 ♂, 1 immature, same as holotype (D. Burckhardt) # 56 (7) (MHNG, dry); 1 ♂, 1 ♀, same but Park entrance to El Abanico, 900 – 1100 m, 22. i. 1996, Tetraglochin alatum, dense forest along river (D. Burckhardt) # 58 (11) (MHNG, on slide).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7E876C4FC60978FC39FCA4.taxon	description	Description. Coloration. General colour of body yellow to orange. Head including genal processes and clypeus yellow to orange. Eyes yellow to greyish, ocelli orange to red. Antenna yellow to brownish, segments 3 – 8 with dark apices, segments 9 – 10 entirely dark brown. Pronotum of the same colour as vertex, sometimes with orange dot in the middle; mesopraescutum pale yellow, often orange in the middle; mesoscutum pale yellow with four broad and, in the middle, one narrow orange longitudinal stripes; mesoscutellum pale yellow along the margin, orange in the middle. Metanotum yellow to orange. Forewing with pale yellow to brownish veins and yellow to brownish membrane, both becoming slightly darker apically. Legs yellow, sometimes with orange femora, meracanthus of metacoxa yellow to orange. Abdomen and terminalia yellow to orange. Paramere and female terminalia with dark apices. Structure. Head, in profile, moderately to strongly inclined from longitudinal body axis (45 – 90 °). Vertex subtrapezoidal with indented foveae, anteriorly produced into transverse lobe on either side of mid-line, with slightly raised hind margin around lateral ocelli, covered with microscopical setae; genal processes conical, slender, subacute apically, distinctly shorter than vertex, covered with short setae. Forewing oblong-oval, narrowly rounded apically; vein C + Sc weakly curved, pterostigma long, vein Rs straight or weakly sinuous, almost straight apically; vein M slightly shorter than either of veins M 1 + 2 and M 3 + 4; surface spinules faint, dense, present in all cells, leaving no spinule-free stripes along the veins, forming indistinct hexagons in apical half; radular spinules covering indistinct areas along the margin of cells r 2, m 1, m 2 and cu 1. Metatibia with 7 – 8 apical spurs. Terminalia. Male. Proctiger tubular; sparsely covered with moderately long setae. Subgenital plate short, subglobular; with sparsely spaced moderately long setae. Paramere irregularly subtrapezoidal; with hook-shaped apico-anterior process on long pedicel, median hump with apically sclerotised tooth, and bulged apico-posterior lobe; process, hump and lobe of subequal length; outer face sparsely covered with moderately long setae mostly in apical part, inner face sparsely covered with relatively short setae. Distal segment of aedeagus moderately elongate, weakly expanding towards apex; with long anterior process, one apical and one apico-posterior tubercles, the latter being curved forward; lateral lobes long, strongly dilated towards apex which is concave. — Female. Proctiger cuneate, pointed apically; dorsal margin, in profile, convex, with median indentation; covered with few moderately long setae in dorsal part. Subgenital plate cuneate, with short apical process; covered with few moderately long setae in apical half, dorsal margin with a row of bristles. Host-plant. Tetraglochin alatum (Gillies ex Hook. & Arn.) Kuntze (Rosaceae).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7E876C4FC60978FC39FCA4.taxon	distribution	Distribution. Chile (VIII Region). Derivation of name. From Latin rutilus = golden-red, referring to the body colour of the species.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B7E876C4FC60978FC39FCA4.taxon	discussion	Comments. Russelliana rutila resembles R. chorizanthis, disparilis, nigra, similis and solanicola; see comments under R. chorizanthis. R. rutila differs from the five species in a yellow forewing membrane. It differs from R. disparilis and nigra in the presence of a median hump of the paramere, and from R. disparilis and similis in the presence of surface spinules in the apical part of the forewing membrane. R. rutila differs from R. chorizanthis in a shorter female terminalia, and from R. disparilis in a smaller apico-posterior lobe of the paramere and an apically subacute anterior process of the distal segment of the aedeagus.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B63876E4FC60C5AFAA0FD8C.taxon	materials_examined	Material examined. Type material. Holotype ♂: Chile: VII Region, Province Talca, Parque Gil de Vilches, Monumento Natural, 35 ° 35 ' S 71 ° 04 ' W, 1100 m, 4 – 5. i. 1994, Dipyrena juncea [Diostea juncea], mixed Nothofagus forest (D. Burckhardt) # 47 (MHNG, dry). Paratypes: Chile: 4 ♀, same as holotype but sector Piedras Blancas, 1350 – 1600 m, 12. i. 1996, Dipyrena juncea [Diostea juncea] (D. Burckhardt) # 43 (4) (MHNG, dry); 5 ♂, 6 ♀, 1 immature, same but sector Majadilla, 135 0 – 1550 m, 13. i. 1996, Dipyrena juncea [Diostea juncea], deciduous and evergreen Nothofagus forests (D. Burckhardt) # 44 (12) (MHNG, NHMB, dry, on slide); 2 ♂, 2 ♀, same but sendero El Enladrillado, El Venado Valley, 1350 – 1700 m, 14. i. 1996, Dipyrena juncea [Diostea juncea], mixed Nothofagus forest (D. Burckhardt) # 45 (1) (MHNG, dry); 3 ♂, 3 ♀, VIII Region, Province Bío-Bío, Parque Nacional Laguna del Laja, sector Chacay, 1200 m, 19. i. 1996, Dipyrena juncea [Diostea juncea], Austrocedrus forest and open sclerophyll scrub (D. Burckhardt) # 53 (3) (MHNG, NHMB, dry).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B63876E4FC60C5AFAA0FD8C.taxon	description	Description. Coloration. Head pale yellow to brown, genal processes whitish ventrally; clypeus black. Eyes grey to dark brown, ocelli orange. Antenna pale yellow, segments 1 – 2 orange, segments 3 – 8 with dark brown apices, segments 9 – 10 entirely black. Pronotum of the same colour as vertex, brown on either side; mesopraescutum pale yellow, with two orange to brown patches along the fore margin; mesoscutum pale yellow, with four broad orange to brown longitudinal stripes; mesoscutellum pale yellow along the margin, brownish in the middle. Metanotum yellow to dark brown. Forewing with white to dark brown veins and yellowish fore margin gradually turning white in the middle of wing where the dark brown pattern starts; the dark pattern is interrupted by white median transverse stripe stretching from median part of vein Rs to bifurcation of vein Cu, and by light areas in cells r 2, m 1, m 2 and cu 1 along the margin. Legs dirty yellow to brownish, with darker femora, meracanthus of metacoxa bright yellow. Abdomen dark brown to black dorsally, yellow to orange ventrally. Male terminalia pale brown, paramere dark brown. Female proctiger brown, with dark apex; subgenital plate orange. Structure. Head, in profile, strongly inclined from longitudinal body axis (> 45 °). Vertex subtrapezoidal, flat with indented foveae, anteriorly produced into transverse lobe on either side of mid-line, hind margin around lateral ocelli not raised, covered with microscopical setae; genal processes short, swollen, with blunt apices, covered with long setae. Pronotum bearing two produced lateral tubercles on either side. Forewing oblong-oval, narrowly, unevenly rounded apically; vein C + Sc strongly, unevenly curved, pterostigma short, vein Rs weakly sinuous, almost straight apically; vein M shorter than either of veins M 1 + 2 and M 3 + 4; surface spinules very dense, present in all cells, leaving no spinule-free stripes along the veins, forming hexagonal pattern, absent in upper part of cell r 1 and along the fore margin of cell c + sc, less developed on unpigmented areas; radular spinules weakly pronounced. Metatibia with 6 apical spurs. Terminalia. Male. Proctiger tubular; densely covered with moderately long setae. Subgenital plate elongate; with sparsely spaced long setae. Paramere narrowly lamellar; with slightly recurved apico-anterior process on pedicel and long finger-shaped apico-posterior lobe with sclerotised anterior tooth situated at base of the lobe and directed inwards; lobe more than twice longer than process; outer face sparsely covered with moderately long setae mostly in apical half, inner face sparsely covered with short setae and with long thick setae along anterior margin of the lobe. Distal segment of aedeagus moderately elongate, broadly, unevenly expanding towards apex; with one small apico-posterior tubercle; lateral lobes moderately long, dilated towards apex which is slightly concave and with frayed margin. — Female. Proctiger subglobular, subacute apically; dorsal margin, in profile, convex, bent downwards; relatively densely covered with moderately long setae in apical half. Subgenital plate subglobular, rounded apically; sparsely covered with short setae. Host-plant. Dipyrena juncea (Gillies & Hook.) Ravenna (Verbenaceae).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B63876E4FC60C5AFAA0FD8C.taxon	distribution	Distribution. Reported from Chile (VII – VIII Regions) (Burckhardt 2008 a).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B63876E4FC60C5AFAA0FD8C.taxon	discussion	Comments. Russelliana sebastiani resembles R. bulbosa and diosteae; see comments under R. bulbosa. R. sebastiani differs from the two species in shorter swollen genal processes, a narrow forewing which is narrowly, unevenly rounded apically with a longer cell m 1, a paramere bearing a slightly recurved apico-anterior process and a narrow apico-posterior lobe, and a distal segment of the aedeagus which is weakly inflated anteriorly and bears a small apico-posterior tubercle. It differs from R. bulbosa in a longer antenna, a forewing with a brown pattern and a shorter pterostigma, a paramere bearing a process distinctly shorter than a lobe, an apically rounded female subgenital plate lacking an apical process. From R. diosteae it differs in a more extensive forewing pattern in its basal third. Russelliana setosa sp. nov. (Figs 10 F, 15 A, 19 I, 24 I, 28 L, 33 G)	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B63876E4FC60C5AFAA0FD8C.taxon	materials_examined	Material examined. Holotype ♂: Argentina: Province Mendoza, above Villa Vicencia, 50 km NW Mendoza, 1800 – 2200 m, 18. i. 1997, Adesmia sp., low scrub (D. Burckhardt) # 15 (3) (MHNG, dry). Paratypes: Argentina: 11 ♂, 15 ♀, 5 immatures, same as holotype (D. Burckhardt) # 15 (3) (MHNG, dry, on slide, 70 % ethanol).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B63876E4FC60C5AFAA0FD8C.taxon	description	Description. Coloration. Head yellow to brownish, genal processes pale yellow; clypeus brown. Eyes yellow to grey, ocelli orange. Antenna yellow to brownish, segments 3 – 8 with dark brown apices, segments 9 – 10 entirely dark brown. Thorax pale yellow to brownish. Forewing with bright yellow to brown veins and semitransparent, yellowish membrane with brown pattern consisting of large patch along vein Cu 1 b and scattered dots varying in size and number, mainly in apical two thirds of the wing. Legs yellow with darker distal tarsal segments, meracanthus of metacoxa pale yellow. Abdomen and terminalia yellow to brownish, lighter ventrally. Structure. Head, in profile, moderately to strongly inclined from longitudinal body axis (45 – 90 °). Vertex subtrapezoidal with indented foveae, anteriorly produced into transverse lobe on either side of mid-line, with raised hind margin around lateral ocelli, covered with short setae; genal processes conical, slender, subacute apically, distinctly shorter than vertex, covered with short setae. Pronotum with one pronounced lateral tubercle on either side. Forewing oval, broadly, evenly rounded apically; vein C + Sc weakly curved, pterostigma long, vein Rs weakly sinuous, almost straight apically; vein M about as long as either of veins M 1 + 2 and M 3 + 4; surface spinules absent; radular spinules covering triangular areas along the margin of cells r 2, m 1, m 2 and cu 1. Metatibia with 6 – 7 apical spurs. Terminalia. Male. Proctiger tubular; sparsely covered with moderately long setae. Subgenital plate elongate; with sparsely spaced moderately long setae. Paramere relatively narrow, lamellar; with apico-anterior process on very short pedicel and median hump with apically sclerotised tooth; apical part of posterior edge produced into small lobe; outer face sparsely covered with moderately long setae, inner face covered with few moderately long setae. Distal segment of aedeagus moderately elongate, weakly expanding towards apex; with long anterior process and two small apico-posterior tubercles; lateral lobes moderately long, dilated towards apex which is concave. — Female. Terminalia densely covered with long setae. Proctiger cuneate, pointed apically; dorsal margin, in profile, strongly convex. Subgenital plate cuneate, with long apical process. Host-plant. Adesmia sp. (Fabaceae).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B63876E4FC60C5AFAA0FD8C.taxon	distribution	Distribution. Argentina (Mendoza). Derivation of name. From Latin setosus = hairy, referring to the female terminalia which are densely covered with long hairs.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B63876E4FC60C5AFAA0FD8C.taxon	discussion	Comments. Russelliana setosa resembles R. mendozae, monticola and vinculipennis, see comments under R. mendozae. R. setosa differs from the three species in denser and longer setae on the female terminalia, from R. mendozae and monticola in a more extensive pattern mainly in the apical two thirds of the forewing membrane, and from R. mendozae and vinculipennis in the presence of a median hump of the paramere. It differs from R. vinculipennis in the absence of surface spinules in the apical part of the forewing membrane, a longer anterior process of the distal segment of the aedeagus, and a longer apical process of the female subgenital plate.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B61876F4FC60DB2FB88FE1C.taxon	materials_examined	Material examined. Type material. Holotype ♂: Bolivia: Department Chuquisaca, Province Nor Cinti, Lecori, S Potosi, 3200 m, 26 – 27. xii. 1984 (L. E. Peña) (MHNG, dry). Paratypes: Bolivia: 11 ♂, 5 ♀, same as holotype (L. E. Peña) (MHNG, dry, on slide); 12 ♂, 4 ♀, same but Padcoya to Camargo, 2800 – 3200 m, 26 – 28. xii. 1984 (L. E. Peña) (BMNH, MHNG, NHMB, dry, on slide).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B61876F4FC60DB2FB88FE1C.taxon	description	Description. Coloration. Head including genal processes pale yellow; clypeus brown. Eyes yellow to brown, ocelli orange. Antenna yellow to brownish, segments 3 – 8 with brown apices, segments 9 – 10 entirely dark brown. Pronotum of the same colour as vertex, with brown spots on either side and yellow to orange spot in the middle; mesopraescutum pale yellow, with two pale to dark brown patches along the fore margin and two yellow to orange transverse stripes posteriorly; mesoscutum pale yellow to orange, with four broad brown and, in the middle, one narrow yellow to orange longitudinal stripes; mesoscutellum pale yellow along the margin, yellow to brown in the middle. Metanotum yellow to dark brown. Forewing with brown veins and colourless membrane, sometimes fumose in the middle of cells in apical half; sometimes with distinct brown patch along vein Cu 1 b. Legs pale to dirty yellow, with slightly darker femora and distal tarsal segments, meracanthus of metacoxa yellow. Abdomen and terminalia yellow to dark brown. Female proctiger dark in apical third, subgenital plate with dark apex. Females often slightly lighter with ventrally lighter abdomen. Structure. Head, in profile, moderately to strongly inclined from longitudinal body axis (45 – 90 °). Vertex subtrapezoidal with indented foveae, anteriorly produced into transverse tubercle on either side of mid-line, with raised hind margin around lateral ocelli, covered with microscopical setae; genal processes conical, slender, subacute apically, shorter than vertex, covered with moderately long setae. Pronotum with two lateral tubercles on either side, one more pronounced than the other one. Forewing oblong-oval, broadly, unevenly rounded apically; vein C + Sc weakly curved, pterostigma long, vein Rs almost straight apically; vein M slightly shorter than either of veins M 1 + 2 and M 3 + 4; surface spinules absent; radular spinules covering triangular areas along the margin of cells r 2, m 1, m 2 and cu 1. Metatibia with 7 – 9 apical spurs. Terminalia. Male. Proctiger tubular; relatively densely covered with moderately long setae. Subgenital plate short, subglobular; with relatively densely spaced moderately long setae. Paramere irregularly subtrapezoidal; with short apico-anterior process on very short pedicel, small median hump with apically sclerotised tooth, and apicoposterior lobe slightly bulged posteriorly; lobe slightly longer than process; outer face sparsely covered with moderately long setae mostly in posterior half, inner face densely covered with long setae. Distal segment of aedeagus moderately elongate, weakly expanding towards apex; with long anterior process, one apical and one apico-posterior tubercles, the latter being curved forward; lateral lobes long, strongly dilated towards apex which is concave. — Female. Proctiger cuneate, pointed apically; dorsal margin, in profile, sinuous, with subapical indentation; densely covered with moderately long setae. Subgenital plate cuneate, with short apical process; sparsely covered with moderately long setae, dorsal margin with a row of bristles. Host-plant. Unknown.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B61876F4FC60DB2FB88FE1C.taxon	distribution	Distribution. Reported from Bolivia (Chuquisaca) (Burckhardt 1987).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B61876F4FC60DB2FB88FE1C.taxon	discussion	Comments. Russelliana similis resembles R. chorizanthis, disparilis, nigra, rutila and solanicola; see comments under R. chorizanthis. R. similis differs from R. chorizanthis, nigra, rutila and solanicola in the absence of surface spinules in the apical part of the forewing membrane, from R. disparilis and nigra in a small median hump of the paramere, and from R. nigra and rutila in a colourless forewing membrane. It differs from R. chorizanthis in shorter female terminalia, and from R. disparilis in a smaller apico-posterior lobe of the paramere and an apically subacute anterior process of the distal segment of the aedeagus.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6087694FC60EC2FCE7FACF.taxon	materials_examined	Material examined. Published records (for details see Serbina et al. 2015). Argentina: Catamarca, Córdoba, La Rioja, Río Negro, Salta, Tucumán. Bolivia: Chuquisaca, Taipina, Tarija. Brazil: Minas Gerais, Paraná, São Paulo. Chile: I Region (Iquique, Tamarugal), II Region (El Loa, Tocopilla), III Region (Chañaral, Copiapó, Huasco), IV Region (Elqui, Limarí), V Region (Petorca, Quillota, San Felipe de Aconcagua, Valparaíso), Region Metropolitana (Santiago), VI Region (Cachapoal), VII Region (Cauquenes, Talca), VIII Region (Ñuble), IX Region (Malleco). Peru: Ancash, Arequipa, Cusco, Huánuco, Lima, Moquegua, Tacna. Uruguay: Brisa de la Pinta (BMNH, CASC, FSCA, MHNG, NHMB, dry, on slide, 70 % ethanol). Additional material. Argentina: 1 ♀, Province Catamarca, Punta Balasto, 220 m, 26 – 28. xi. 1983 (L. E. Peña) (MHNG, dry); 1 ♂, same but Province Jujuy, La Quiaca, 3442 m, 17. ii. 1951 (E. S. Ross & A. E. Michelbacher) (CASC, dry); 8 ♂, 25 ♀, 1?, same but Province La Pampa, Puelén, 9. xi. 1987 (L. E. Peña) (MHNG, dry, on slide); 2 ♀, 1 immature, same but Province Mendoza, above Villa Vicencia, 50 km NW Mendoza, 1800 – 2200 m, 18. i. 1997, low scrub (D. Burckhardt) # 15 (NHMB, dry). Bolivia: 2 ♀, Department Cochabamba, Province Chapare, 20 km E Sacaba, 17 ° 25.1 ' S 65 ° 53.9 ' W, 3450 m, 24. iii. 2001 (A. Freidberg) (NHMB, dry). Brazil: 1 ♀, State São Paulo, Rio de Janeiro, 19. i. 1969, beach area (C. W. & L. B. O’Brien) (CASC, dry). Chile: 1 ♂, 3 ♀, V Region, Province San Felipe de Aconcagua, Termas de Jahuel, 1000 m, 21. i. 1997, Helenium aromaticum, Acacia caven steppe with some planted exotic trees (D. Burckhardt) # 17 (1) (NHMB, dry); 1 ♀, Region Metropolitana, Province Santiago, Quebrada de la Plata, Fugdo, Rinenada, Kaipa, 33 ° 32 ' S 70 ° 47 ' W, 510 m, 25. i. 1966 (M. E. Irwin) (CASC, dry); 1 ♂, IX Region, Malleco, Angol, 29. i. 1951 (E. S. Ross & A. E. Michelbacher) (CASC, dry). Peru: 1 ♂, Region Ayacucho, Huanta, 8. iii. 1951 (E. S. Ross & A. E. Michelbacher) (CASC, dry); 1 ♂, 3 ♀, Region Junín, Province Chupaca, Chupaca, 24. vi. 2007, Daucus carota (R. Orihuela) (NHMB, 70 % ethanol).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6087694FC60EC2FCE7FACF.taxon	description	Description. Coloration. Head including genal processes pale yellow, genae pale yellow to brown, vertex often pale to dark brown in the middle; clypeus pale to dark brown. Eyes pale yellow to brown, ocelli yellow to orange. Antenna pale to dirty yellow, segments 4 – 8 with dark brown apices, segments 9 – 10 entirely dark brown. Pronotum pale yellow, often with pale to dark brown dot in the middle; mesopraescutum pale yellow with two yellow to dark brown patches along the fore margin; mesoscutum pale yellow with four broad pale to dark brown longitudinal stripes and often, in the middle, with one narrow yellow to brownish longitudinal stripe; mesoscutellum pale yellow along the margin, pale to dark brown in the middle. Metanotum yellow to dark brown. Forewing with pale to dark brown veins, becoming darker towards apex, and colourless to greyish membrane with indistinct brown patches along the veins Cu and Cu 1 b, at apices of veins R 1, Rs, M 1 + 2, M 3 + 4, Cu 1 a and often between bifurcation of vein M and apical part of cell r 1. Legs yellow to brownish, with slightly darker distal tarsal segments, meracanthus of metacoxa pale yellow. Abdomen brown. Male terminalia brown to dark brown. Female terminalia dirty yellow to brown; proctiger dark in apical half. Females generally slightly lighter, with ventrally lighter abdomen. Structure. Head, in profile, strongly inclined from longitudinal body axis at 90 °. Vertex subtrapezoidal with indented foveae, anteriorly produced into transverse lobe on either side of mid-line, with raised hind margin around lateral ocelli, covered with microscopical setae; genal processes conical, slender, subacute apically, distinctly shorter than vertex, covered with moderately long setae. Forewing oblong-oval, narrowly rounded apically; vein C + Sc weakly curved, pterostigma long, vein Rs almost straight apically; vein M about as long as either of veins M 1 + 2 and M 3 + 4; surface spinules very dense, present in all cells, leaving no spinule-free stripes along the veins, irregularly spaced; radular spinules covering triangular areas along the margin of cells r 2, m 1, m 2 and cu 1. Metatibia with 7 apical spurs. Terminalia. Male. Proctiger tubular; sparsely covered with moderately long setae. Subgenital plate short, subglobular; with relatively densely spaced moderately long setae and with long setae along ventral margin. Paramere irregularly subtrapezoidal, curved with median convexity apically; with hook-shaped apico-anterior process on short pedicel, apically sclerotised median tooth and bulged apico-posterior lobe; both process and lobe of subequal length; outer face sparsely covered with moderately long setae mostly in apical half, inner face densely covered with short to moderately long setae. Distal segment of aedeagus moderately elongate, weakly expanding towards apex; with moderately long anterior process, one apical, horn-shaped, and one apico-posterior tubercles, the latter being curved forward; lateral lobes long, dilated towards apex which is concave. — Female. Proctiger cuneate, pointed apically; dorsal margin, in profile, sinuous, with subapical indentation; densely covered with short setae. Subgenital plate cuneate, with short apical process; sparsely covered with moderately long setae, dorsal margin with few bristles. Host-plants. Polyphagous, confirmed hosts are Alternanthera ficoidea (L.) Sm. (Amaranthaceae), Baccharis lycioides J. Rémy, B. zoellneri F. H. Hellw. ssp. minor F. H. Hellw., Helenium aromaticum (Hook.) L. H. Bailey, Parthenium hysterophorus L., Xanthium spinosum L. (Asteraceae), Escallonia rosea Griseb. (Escalloniaceae), Brugmansia arborea (L.) Steud., Datura sp. and Solanum tuberosum L. (Solanaceae); likely but unconfirmed hosts are Beta vulgaris L. (Amaranthaceae), Baccharis neaei DC., Flaveria bidentis (L.) Kuntze, Helianthus annuus L., Tagetes erecta L., T. minuta L. (Asteraceae), Acnistus arborescens (L.) Schltdl., Capsicum annuum L., C. baccatum L., Cestrum auriculatum L'Hér., Datura stramonium L., Fabiana imbricata Ruiz & Pav., Lycium chilense Bertero, Lycopersicon esculentum Mill., Nicotiana glutinosa L., Nolana cf. sedifolia Poepp., Solanum americanum Mill., S. chilense Dunal, S. corymbosum Jacq., S. peruvianum L., S. pinnatum Cav. and S. valdiviense Dunal (Solanaceae).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6087694FC60EC2FCE7FACF.taxon	distribution	Distribution. The species is native to the Andes Region (Central and Western Argentina, Bolivia, Far Northern – Southern Chile and Peru) and presumably was introduced into eastern South America (Eastern Argentina, Southern Brazil, Uruguay) (Tuthill 1959; Burckhardt 1987; Serbina et al. 2015).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6087694FC60EC2FCE7FACF.taxon	discussion	Comments. The collections of Russelliana solanicola from the MHNG and NHMB include a large number (few hundreds) of dry and slide mounted specimens, and those preserved in 70 % ethanol. Some specimens assigned to R. solanicola in Serbina et al. (2015) belong to other closely related species, R. brevigenis sp. nov., R. caunda sp. nov. and R. didyma sp. nov. For more details on the locality data, see the descriptions of R. brevigenis sp. nov., R. caunda sp. nov. and R. didyma sp. nov. Russelliana solanicola resembles R. chorizanthis, disparilis, nigra, rutila and similis; see comments under R. chorizanthis. R. solanicola differs from R. disparilis and nigra in a median convexity of the apical margin of the paramere, from R. disparilis and similis in the presence of surface spinules in the apical part of the forewing membrane, and from R. nigra and rutila in a colourless forewing membrane. It differs from R. chorizanthis in a shorter female terminalia, and from R. disparilis in a smaller apico-posterior lobe of the paramere and an apically subacute anterior process of the distal segment of the aedeagus.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6087694FC60EC2FCE7FACF.taxon	description	Russelliana tetraglochin sp. nov. (Figs 10 I, 15 D, 20 C, 25 C, 29 C, 34 A)	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6087694FC60EC2FCE7FACF.taxon	materials_examined	Material examined. Holotype ♂: Chile: V Region, Province Los Andes, El Juncal, 2200 m, 24. xii. 1998, Tetraglochin alatum, alpine scrub with low bushes (D. Burckhardt) # 6 (3) (NHMB, dry). Paratypes: Argentina: 2 ♂, 8 ♀, Province Mendoza, Mendoza Valley, Punta de Vacas, 2400 m, 30. xii. 1995, Tetraglochin alatum, subalpine / alpine scrub (D. Burckhardt) # 28 (MHNG, NHMB, dry); 5 ♂, 9 ♀, 2 immatures, same but above Villa Vicencia, 50 km NW Mendoza, 1800 – 2200 m, 18. i. 1997, Tetraglochin alatum, low scrub (D. Burckhardt) # 15 (6) (MHNG, on slide, 70 % ethanol). Chile: 2 ♂, 6 ♀, V Region, Province Los Andes, Río Blanco to Portillo, route 60, Aconcagua Valley, 32 ° 50 ' S 70 ° 08 ' W, 2200 – 2400 m, 23. xi. 1992, Mulguraea scoparia [Diostea scoparia], alpine scrub (D. Burckhardt) # 12 (MHNG, dry); 12 ♂, 24 ♀, 5 immatures, 1?, same but km 10 Portillo to Río Blanco, 2300 m, 23. xii. 1995, Tetraglochin alatum (D. Burckhardt) # 18 (3) (BMNH, MHNG, NHMB, dry, on slide, 70 % ethanol); 18 ♂, 15 ♀, 7 immatures, same as holotype (D. Burckhardt) # 6 (3) (NHMB, dry, on slide, 70 % ethanol).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6087694FC60EC2FCE7FACF.taxon	description	Description. Coloration. General colour of body yellow. Head including genal processes whitish to pale yellow, sometimes orange; clypeus pale yellow to orange. Eyes yellow, ocelli red. Antenna yellow to brownish, segments 3 – 8 with dark brown apices, segments 9 – 10 entirely dark brown. Pronotum pale to bright yellow, often of same colour as vertex and distinctly paler than mesonotum, sometimes with bright yellow dot in the middle; mesopraescutum pale yellow with two bright yellow to orange patches along the fore margin; mesoscutum pale yellow with four broad and, in the middle, one narrow bright yellow to orange longitudinal stripes; mesoscutellum pale yellow along the margin, bright yellow in the middle. Metanotum pale to bright yellow. Forewing membrane with pale yellow to brownish veins and yellow to brownish membrane, both becoming slightly darker towards apical part. Legs pale to bright yellow, sometimes with orange femora, meracanthus of metacoxa pale to bright yellow. Abdomen and terminalia pale yellow to orange. Female proctiger dark in apical third; subgenital plate with dark apex. Structure. Head, in profile, moderately to strongly inclined from longitudinal body axis (45 – 90 °). Vertex subtrapezoidal, flat with indented foveae, anteriorly produced into transverse lobe on either side of mid-line, with slightly raised hind margin around lateral ocelli, covered with microscopical setae; genal processes conical, relatively slender, subacute apically, shorter than vertex, covered with short setae. Forewing oblong-oval, narrowly rounded apically; vein C + Sc weakly curved, pterostigma long, vein Rs almost straight apically; vein M about as long as either of veins M 1 + 2 and M 3 + 4; surface spinules absent; radular spinules covering triangular areas along the margin of cells r 2, m 1, m 2 and cu 1. Metatibia with 4 – 6 apical spurs. Terminalia. Male. Proctiger tubular; sparsely covered with moderately long setae mostly in posterior part. Subgenital plate short, subglobular; with sparsely spaced long setae. Paramere narrowly lamellar with constricted base, weakly sinuous apically, posterior margin curved; with short anterior process lacking pedicel and apically sclerotised median tooth; outer face sparsely covered with moderately long setae mostly in posterior part, inner face sparsely covered with short setae. Distal segment of aedeagus moderately elongate, weakly expanding towards apex; with anterior process slightly directed upwards, situated almost in the middle of distal segment and with one short and one horn-shaped apico-posterior tubercles; lateral lobes moderately long, dilated towards apex which is concave. — Female. Proctiger cuneate, pointed apically; dorsal margin, in profile, almost straight; sparsely covered with relatively short setae in apical half. Subgenital plate subglobular, with short apical process; sparsely covered with moderately long setae in apical part, dorsal margin with a bristle. Host-plant. Tetraglochin alatum (Gillies ex Hook. & Arn.) Kuntze (Rosaceae).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6087694FC60EC2FCE7FACF.taxon	distribution	Distribution. Argentina (Mendoza), Chile (V Region). Derivation of name. Named after its host Tetraglochin.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6087694FC60EC2FCE7FACF.taxon	discussion	Comments. Russelliana tetraglochin resembles some Adesmia feeding species in a narrowly lamellar paramere bearing an apico-anterior process lacking a pedicel, and in a distal segment of the aedaegus bearing two small apico-posterior tubercles. It differs from most of Adesmia - feeders in the absence of a brown pattern on the forewing membrane, and a subglobular female subgenital plate.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B66876A4FC60AECFAE0F9CE.taxon	materials_examined	Material examined. Type material. Holotype ♂: Chile: V Region, Province Los Andes, El Juncal, 2200 m, 24. xii. 1998, Mulguraea scoparia [Diostea scoparia], alpine scrub with low bushes (D. Burckhardt) # 6 (1) (NHMB, dry). Paratypes: Chile: 3 ♀, 9 immatures, 1 immature skin, V Region, Province Los Andes, Río Blanco to Portillo, route 60, Aconcagua Valley, 32 ° 50 ' S 70 ° 08 ' W, 2200 – 2400 m, 23. xi. 1992, Mulguraea scoparia [Diostea scoparia], alpine scrub (D. Burckhardt) # 12 (MHNG, dry); 1 ♂, 2 ♀, same but 25 km W Portillo, 1900 – 2100 m, 1. xii. 1993, subalpine / alpine scrub (D. Burckhardt) # 1 (MHNG, dry); 8 ♂, 15 ♀, same but Portillo, 1800 m, 31. xii. 1993, Mulguraea scoparia [Diostea scoparia], alpine scrub (D. Burckhardt) # 43 (MHNG, dry); 1 ♂, 2 ♀, 1 immature, same but 2200 m, Mulguraea scoparia [Diostea scoparia] (D. Burckhardt) # 44 (MHNG, dry); 3 ♂, 7 ♀, same but km 10 Portillo to Río Blanco, 2300 m, 23. xii. 1995, Mulguraea scoparia [Diostea scoparia] (D. Burckhardt) # 18 (1) (MHNG, dry); 4 ♂, 3 ♀, same but km 14 Portillo to Río Blanco, 2100 m, Mulguraea scoparia [Diostea scoparia], subalpine scrub (D. Burckhardt) # 19 (1) (MHNG, dry); 3 ♂, 3 ♀, same but km 19 Portillo to Río Blanco, 1900 m, Mulguraea scoparia [Diostea scoparia] (D. Burckhardt) # 20 (2) (MHNG, dry); 21 ♂, 22 ♀, same but along road from Portillo to Río Blanco, 24. xii. 1998, Mulguraea scoparia [Diostea scoparia], gully with a few shrubs and small trees along river and subalpine scrub (D. Burckhardt) # 7 (2) (NHMB, dry, on slide, 70 % ethanol); 27 ♂, 19 ♀, 3 immatures, 1 immature skin, same as holotype (D. Burckhardt) # 6 (1) (NHMB, dry, on slide, 70 % ethanol).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B66876A4FC60AECFAE0F9CE.taxon	description	Description. Coloration. Head including genal processes yellow to brown, genal processes with dark tips, genae brown to dark brown, vertex with orange to brown pattern; clypeus dark brown to black. Eyes yellow to brown, ocelli orange to red. Antenna pale yellow, segments 1 – 2 yellow to brown, segments 3 – 8 with brown apices, segments 9 – 10 entirely dark brown. Pronotum of the same colour as vertex, dark brown on either side and yellow to brown spot in the middle; mesopraescutum pale yellow, with two orange to brown patches along the fore margin and three orange transverse stripes posteriorly; mesoscutum pale yellow, with four broad orange to brown and, in the middle, one narrow orange longitudinal stripes; mesoscutellum pale yellow along the margin, yellow to brown in the middle. Metanotum yellow to dark brown. Forewing with whitish to dark brown veins and semitransparent, colourless membrane with dark brown pattern, similar to R. marionae, consisting of two broad stripes: submarginal one stretching from apical part of costal vein to median part of vein Cu 1 a, along vein Cu 1 a and to base of vein M 1 + 2, sometimes leaving light areas in cells m 1 and m 2 along the margin, and median one stretching from base of pterostigma, along the veins R, M + Cu and Cu, to base of vein Cu 1 b; membrane between stripes colourless, with dots varying in size and number. Legs dirty yellow to brown, with dark brown femora and distal tarsal segments, meracanthus of metacoxa pale yellow to orange. Abdomen and terminalia dark brown, sometimes black. Structure. Head, in profile, weakly inclined from longitudinal body axis (<45 °). Vertex subtrapezoidal, flat with indented foveae, anteriorly produced into transverse lobe on either side of mid-line, hind margin around lateral ocelli not raised, covered with long setae; genal processes conical, slender, subacute apically, of the same length as vertex, covered with long setae. Pronotum bearing two pronounced lateral tubercles on either side. Forewing oblong-oval, broadly, evenly rounded apically; vein C + Sc weakly curved, pterostigma long, vein Rs weakly sinuous, curved to fore margin apically; vein M slightly longer than either of veins M 1 + 2 and M 3 + 4; surface spinules very dense, present in all cells, leaving no spinule-free stripes along the veins, irregularly spaced, less developed on unpigmented areas; radular spinules not pronounced. Metatibia with 6 – 7 apical spurs. Terminalia. Male. Proctiger tubular; densely covered with long setae. Subgenital plate short, subglobular; with sparsely spaced moderately long setae. Paramere narrowly lamellar; with finger-shaped apico-anterior process on long pedicel and long apico-posterior lobe, slightly convex posteriorly, evenly rounded apically; both process and lobe of subequal length; outer face sparsely covered with moderately long setae mostly in posterior half, inner face densely covered with moderately long setae in anterior part, few long setae along anterior margin, sparsely covered with moderately long setae in posterior part and with few long setae apically. Distal segment of aedeagus elongate, weakly, irregularly truncated towards apex; lateral lobes long, tubular, sclerotised. — Female. Proctiger cuneate, pointed apically; dorsal margin, in profile, with median indentation; relatively densely covered with moderately long setae. Subgenital plate subglobular, with moderately long apical process; densely covered with moderately long setae. Host-plant. Mulguraea scoparia (Gillies & Hook.) N. O'Leary & P. Peralta (Verbenaceae).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B66876A4FC60AECFAE0F9CE.taxon	distribution	Distribution. Reported from Chile (V Region) (Burckhardt 2008 a).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B66876A4FC60AECFAE0F9CE.taxon	discussion	Comments. Russelliana theresae resembles R. marionae; see comments under R. marionae. R. theresae differs from R. marionae in a shorter forewing with a more extensive pattern in the basal half of its membrane, the presence of microscopical setae on the forewing veins, and a paramere bearing a broader apico-posterior lobe.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6587604FC609F8FCC7FD7D.taxon	materials_examined	Material examined. Type material. Holotype ♂: Argentina: Province Jujuy, Iturbe, 31. xii. 1984 (L. E. Peña) (MHNG, dry). Paratypes: Argentina: 1 ♂, 2 ♀, same as holotype (L. E. Peña) (MHNG, dry, on slide). Bolivia: 2 ♂, 9 ♀, Department Chuquisaca, Province Nor Cinti, Lecori, S Potosi, 3200 m, 26 – 27. xii. 1984 (L. E. Peña) (MHNG, NHMB, dry, on slide).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6587604FC609F8FCC7FD7D.taxon	description	Description. Coloration. Head including genal processes pale yellow, genal processes with dark tips, vertex with variable orange pattern or entirely yellow; clypeus brown. Eyes yellow to brown, ocelli orange to red. Antenna dirty yellow, segments 3 – 8 with brown apices, segments 9 – 10 entirely dark brown. Pronotum of the same colour as vertex, often with yellow to orange patch in the middle; mesopraescutum pale yellow, with two yellow to orange patches along the fore margin and two yellow to orange transverse stripes posteriorly; mesoscutum pale yellow with four broad and, in the middle, one narrow yellow to orange longitudinal stripes; mesoscutellum pale yellow along the margin, yellow to orange in the middle. Metanotum yellow to brown. Forewing with brown veins and colourless membrane consisting of dark brown pattern of patch along vein Cu 1 b and scattered dots covering most of the membrane, sometimes forming distinct transverse band stretching from apical part of costal vein to apex of vein Cu 1 a, leaving light areas in cells r 2, m 1 and m 2 along the margin. Legs yellow to brownish, with darker femora and distal tarsal segments, meracanthus of metacoxa yellow. Abdomen and terminalia brown to dark brown. Females often with abdomen lighter ventrally. Structure. Head, in profile, moderately to strongly inclined from longitudinal axis of body (45 – 90 °). Vertex subtrapezoidal, anteriorly produced into transverse lobe on either side of mid-line, with raised hind margin around lateral ocelli, covered with short setae; genal processes conical, slender, subacute apically, shorter than vertex, covered with moderately long setae. Pronotum with two pronounced lateral tubercles on either side. Forewing oblong-oval, broadly, unevenly rounded apically; vein C + Sc weakly curved, pterostigma long, vein Rs almost straight apically; vein M about as long as either of veins M 1 + 2 and M 3 + 4; surface spinules present in all cells, leaving no spinule-free stripes along the veins, densely and irregularly spaced, less developed on unpigmented areas; absent in cell c + sc except for a group of spinules in the middle, sometimes covering entire cell; radular spinules covering rounded areas along the margin of cells r 2, m 1, m 2 and cu 1. Metatibia with 6 – 9 apical spurs. Terminalia. Male. Proctiger tubular; sparsely covered with moderately long setae. Subgenital plate short, subglobular; with sparsely spaced moderately long setae. Paramere narrowly lamellar, convex apically, posterior margin straight; with hook-shaped apico-anterior process on pedicel and apically sclerotised median tooth; outer face sparsely covered with moderately long setae mostly in apical half, inner face sparsely covered with moderately long setae. Distal segment of aedeagus elongate, weakly expanding towards apex; with short beak-like anterior process and two small apico-posterior tubercles; lateral lobes moderately long, slightly dilated towards apex which is slightly concave. — Female. Proctiger cuneate, subacute apically; dorsal margin, in profile, slightly convex in apical half; densely covered with moderately long setae. Subgenital plate cuneate, with short apical process; sparsely covered with moderately long setae, dorsal margin with a row of bristles. Host-plant. Unknown.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6587604FC609F8FCC7FD7D.taxon	distribution	Distribution. Reported from Argentina (Jujuy), Bolivia (Chuquisaca) (Burckhardt 1987).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6587604FC609F8FCC7FD7D.taxon	discussion	Comments. Russelliana vinculipennis resembles R. mendozae, monticola and setosa, see comments under R. mendozae. R. vinculipennis differs from the three species in the presence of surface spinules in the apical part of the forewing membrane, a shorter anterior process of the distal segment of the aedeagus, and a shorter apical process of the female subgenital plate. It differs from R. mendozae and R. monticola in a more extensive forewing pattern mainly in its apical two thirds, from R. monticola and R. setosa in the absence of a median hump of the paramere, and from R. setosa in less dense and shorter setae on the female terminalia. Russelliana viscosae sp. nov. (Figs 10 L, 15 G, 20 F, 25 F, 29 F, 34 D)	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6587604FC609F8FCC7FD7D.taxon	materials_examined	Material examined. Holotype ♂: Chile: IV Region, Province Elqui, Coquimbo, 15 – 25 km S Vicuña, 30 ° 15 ' S 70 ° 40 ' W, 1300 – 1700 m, 14. xii. 1993, Fabiana viscosa, steppe (D. Burckhardt) # 33 (MHNG, dry). Paratypes: Chile: 1 ♀, IV Region, Province Elqui, Coquimbo, 5 miles N of Laguna Dam, 2438 m, 6. xii. 1950 (E. S. Ross & A. E. Michelbacher) (CASC, dry); 3 ♂, 2 ♀, same as holotype (D. Burckhardt) # 33 (MHNG, NHMB, dry, on slide).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6587604FC609F8FCC7FD7D.taxon	description	Description. Coloration. General colour of body green-yellow to bright yellow. Head including genal processes and clypeus pale yellow. Eyes yellow to greyish, ocelli yellow to red. Antenna pale to dirty yellow, segments 3 – 7 brownish apically, segment 8 with brown apex, segments 9 – 10 entirely dark brown. Pronotum of the same colour as vertex, distinctly paler than mesonotum; mesopraescutum green-yellow to bright yellow, sometimes with two distinct orange to brownish patches along the fore margin; mesoscutum green-yellow to bright yellow, sometimes with distinct four broad orange longitudinal stripes; mesoscutellum green-yellow to bright yellow. Metanotum green-yellow to bright yellow. Legs pale yellow, sometimes with slightly darker distal tarsal segments, meracanthus of metacoxa green-yellow to bright yellow. Forewing with yellow veins and semitransparent, evenly yellow membrane. Abdomen and terminalia green-yellow to bright yellow. Female proctiger darker in apical third, subgenital plate with dark apex. Structure. Head, in profile, inclined from longitudinal body axis at 45 °. Vertex trapezoidal, flat with indented foveae, anteriorly produced into transverse lobe on either side of mid-line, hind margin around lateral ocelli not raised, covered with microscopical setae; genal processes conical, slightly swollen, subacute apically, twice shorter than vertex, covered with short setae. Pronotum with two relatively pronounced lateral tubercles on either side. Forewing oviform; vein C + Sc strongly curved in the middle, pterostigma long, vein Rs straight apically; vein M slightly longer than either of veins M 1 + 2 and M 3 + 4; surface spinules absent; densely and irregularly spaced in cell c + sc except for base and apex; radular spinules covering rounded areas along the margin of cells r 2, m 1, m 2 and cu 1. Metatibia with 7 – 8 apical spurs. Terminalia. Male. Proctiger tubular; densely covered with relatively short setae. Subgenital plate relatively elongate; with sparsely spaced moderately long setae. Paramere broadly lamellar, almost straight or weakly sinuous posteriorly; with short apico-anterior process lacking pedicel and apically sclerotised median tooth; outer face densely covered with short setae mostly in posterior part, inner face densely, evenly covered with short setae. Distal segment of aedeagus massive, broadly, unevenly expanding towards apex, strongly inflated anteriorly, concave apically; with one horn-shaped apico-posterior tubercle; lateral lobes short, with entire apical margin. — Female. Proctiger cuneate, subacute apically; dorsal margin, in profile, convex, strongly indented subapically; densely covered with long setae. Subgenital plate subglobular, with moderately long apical process; densely covered with long setae, dorsal margin with few bristles. Host-plant. Adults were collected on Fabiana viscosa Hook. & Arn. (Solanaceae) which is a likely host.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6587604FC609F8FCC7FD7D.taxon	distribution	Distribution. Chile (IV Region). Derivation of name. Named after its likely host Fabiana viscosa.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6587604FC609F8FCC7FD7D.taxon	discussion	Comments. Russelliana viscosae resembles R. fabianae; see comments under R. fabianae. R. viscosae differs from R. fabianae in a shorter antenna and the absence of surface spinules in the apical part of the forewing membrane. Russelliana xantha sp. nov. (Figs 10 M, 15 H, 20 G, 25 G, 29 G, 34 E) Russelliana intermedia, Burckhardt et al. (2012): 76, table 1 (in part.), nec Burckhardt, 1987.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6587604FC609F8FCC7FD7D.taxon	materials_examined	Material examined. Holotype ♂: Chile: V Region, V Region, San Felipe de Aconcagua, Putaendo, San Felipe area, Cerro Hormigas, 32 ° 43.3 ' S 70 ° 43.3 ' W, 720 m, 4. iii. 2009, Baccharis salicina [Baccharis marginalis], Acacia caven scrub with dried grass (D. Burckhardt) # 10 (1) (NHMB, dry). Paratypes: Chile: 10 ♂, 21 ♀, 1 immature, III Region, Province Huasco, Huasco, 28 ° 27 ' S 71 ° 05 ' W, 50 m, 13. xii. 1993, Baccharis sp., river estuary with dense scrub (D. Burckhardt) # 31 (MHNG, dry); 1 ♀, IV Region, Province Choapa, Los Vilos, 31 ° 54 ' S 71 ° 31 ' W, 0 m, 2. xii. 1993, Baccharis sp., coastal vegetation (D. Burckhardt) # 2 (MHNG, dry); 1 ♀, same but Province Elqui, Coquimbo, 20 miles E of La Serena, 3. xii. 1950 (E. S. Ross & A. E. Michelbacher) (CASC, dry); 2 ♂, 2 ♀, same but 5 miles N of Laguna Dam, 2438 m, 6. xii. 1950 (E. S. Ross & A. E. Michelbacher) (CASC, dry); 2 ♂, 5 ♀, 1 immature, same but 5 miles W of La Junta, 7. xii. 1950 (E. S. Ross & A. E. Michelbacher) (CASC, dry, on slide); 20 ♂, 23 ♀, 4 immatures, same but Chapilca to Guanta, ca 100 km E La Serena, 29 ° 50 ' S 70 ° 30 ' W, 1100 m, 3. xii. 1993, Baccharis salicina [Pingraea marginalis], dry quebrada with some scattered shrubs (D. Burckhardt) # 3 (BMNH, MHNG, dry); 20 ♂, 19 ♀, 7 immatures, same but below Juntas, ca 150 km E La Serena, 29 ° 57 ' S 70 ° 06 ' W, 1900 m, Baccharis sp., dry quebrada with Baccharis scrub along river (D. Burckhardt) # 5 (MHNG, dry); 4 ♂, 11 ♀, same but 15 km SW Viñita Baja, 29 ° 50 ' S 70 ° 50 ' W, 450 m, 4. xii. 1993, Baccharis sp., quebrada with sparse scrub (D. Burckhardt) # 6 (MHNG, dry); 13 ♂, 14 ♀, same but 15 km E Vicuña, 30 ° 10 ' S 70 ° 40 ' W, 850 m, 5. xii. 1993, Baccharis salicina [Pingraea marginalis], river bed with Baccharis and dry slope with small shrubs (D. Burckhardt) # 10 (MHNG, NHMB, dry); 1 ♂, 20 ♀, Panamericana km 550, 85 km N La Serena, 29 ° 25 ' S 71 ° 10 ' W, 200 m, 6. xii. 1993, Baccharis linearis, steppe (D. Burckhardt) # 12 (MHNG, dry); 6 ♂, 11 ♀, same but 5 – 25 km S Vicuña, 30 ° 15 ' S 70 ° 40 ' W, 1300 – 1700 m, 14. xii. 1993, Baccharis salicina [Pingraea marginalis] (D. Burckhardt) # 33 (MHNG, dry); 33 ♂, 35 ♀, 2 immatures, same but Baccharis sp. (D. Burckhardt) # 33 (MHNG, dry); 14 ♂, 13 ♀, 6 immatures, 2 immature skins, same but 16 km N Chapilca, nr Río Turbio, road to Llanos de Huanta, ca 80 km E La Serena, 1100 m, 17. xii. 1995, Baccharis sp., very dry quebrada with some scattered shrubs, mainly Baccharis and Prosopis tamarugo trees, with grass along the river (D. Burckhardt) # 2 (1) (MHNG, dry, 70 % ethanol); 4 ♂, 13 ♀, 2 immatures, 1 immature skin, same but 20 km W Vicuña, nr Río Elqui, 500 m, 18. xii. 1995, Baccharis spp., river bed with Salix and Baccharis shrubs (D. Burckhardt) # 6 (1) (MHNG, dry, 70 % ethanol); 29 ♂, 32 ♀, same but ca 40 km E La Serena, 5 km SW Viñita Baja, 450 m, 19. xii. 1995, Baccharis spp., quebrada (D. Burckhardt) # 9 (1) (MHNG, dry, 70 % ethanol); 2 ♀, same but ca 50 km NE La Serena, Almte Latorre, 1000 m, Baccharis salicina [Pingraea marginalis] (D. Burckhardt) # 11 (1) (MHNG, dry); 1 ♂, 11 ♀, same but Río Claro Valley, Alcohuaz, 1700 m, 20. xii. 1995, Baccharis sp., semidesert (D. Burckhardt) # 14 (1) (MHNG, dry, 70 % ethanol); 7 ♀, same but Elqui Valley, nr Rivadavia, 750 m, Baccharis sp., semidesert with Baccharis shrubs and scattered trees in lowest part (D. Burckhardt) # 12 (7) (MHNG, dry); 2 ♂, 2 ♀, same but La Herradura, 100 m, 21. xii. 1995, Baccharis sp., sparse scrub nr sea shore (D. Burckhardt) # 15 (1) (MHNG, dry); 6 ♂, 5 ♀, same but Province Limarí, Parque Nacional Fray Jorge, Alto de Talinay, 30 ° 40 ' S 71 ° 41 ' W, 550 m, 6 – 7. xii. 1990, Baccharis spp., mediterranean scrub (D. Agosti & D. Burckhardt) # 1 b (MHNG, dry); 3 ♂, 15 ♀, same but area between Quebrada Las Vacas, " Administración " and Río Limarí, 250 m, 7 – 9. xii. 1990, Baccharis linearis, open mediterranean scrub (D. Agosti & D. Burckhardt) # 2 (MHNG, dry); 5 ♂, 2 ♀, 2 immatures, same but Baccharis paniculata [Neomolina paniculata] (D. Agosti & D. Burckhardt) # 2 (MHNG, dry); 42 ♂, 39 ♀, same but Baccharis salicina [Pingraea viscosa] (D. Agosti & D. Burckhardt) # 2 (MHNG, dry); 2 ♂, 12 ♀, same but Alto de Talinay, 30 ° 40 ' S 71 ° 41 ' W, 500 m, 15. xii. 1992, Baccharis paniculata [Neomolina paniculata], sclerophyll forest and mediterranean scrub (D. Burckhardt) # 26 (NHMB, dry); 13 ♂, 44 ♀, same but Quebrada La Vaca, 100 – 200 m, 15 – 17. xii. 1992, Baccharis linearis, mediterranean scrub (D. Burckhardt) # 27 (NHMB, dry); 1 ♂, 3 ♀, same but Baccharis paniculata [Neomolina paniculata] (D. Burckhardt) # 27 (NHMB, dry); 1 ♀, same but nr park entrance gate, 100 – 150 m, 16. xii. 1992, Baccharis paniculata [Neomolina paniculata] (D. Burckhardt) # 28 (NHMB, dry); 3 ♂, 6 ♀, V Region, Province Los Andes, km 14 Portillo to Río Blanco, Aconcagua Valley, 2100 m, 23. xii. 1995, Baccharis sp., subalpine scrub (D. Burckhardt) # 19 (2) (MHNG, dry, 70 % ethanol); 1 ♂, 1 ♀, same but km 10 Portillo to Río Blanco, 2300 m, Baccharis sp., alpine scrub (D. Burckhardt) # 18 (2) (MHNG, dry); 8 ♂, 22 ♀, 1 immature, same but Portillo to Río Blanco, 1900 m, 24. xii. 1998, Baccharis spp., gully with a few shrubs and small trees along river and subalpine scrub (D. Burckhardt) # 7 (1) (NHMB, dry, 70 % ethanol); 6 ♂, 7 ♀, same but El Juncal, 2200 m, Baccharis sp., alpine scrub with low bushes (D. Burckhardt) # 6 (2) (NHMB, dry, 70 % ethanol); 1 ♂, 1 ♀, same but Province Petorca, El Guayacán, 20 km E Cabildo, 800 m, 17. v. 1993, Baccharis sp., mediterranean scrub (D. Burckhardt) # 12 (1) (MHNG, dry); 1 ♂, 2 ♀, same but La Viña to Alicahue, E Cabildo to La Ligua, 600 m, 21. xii. 1998, Baccharis sp., semidesert, degraded Acacia caven steppe and sclerophyll forest along river (D. Burckhardt) # 2 (2) (NHMB, dry); 3 ♀, same but Alicahue to Chincolco, 700 – 1250 m, 21 – 26. xii. 1998, Baccharis linearis, semidesert and Acacia caven steppe (D. Burckhardt) # 3 (6) (NHMB, dry); 2 ♂, 1 ♀, same but Baccharis sp. (D. Burckhardt) # 3 (9) (NHMB, dry); 3 ♀, same but Province San Felipe de Aconcagua, Putaendo, 10 km N San Felipe, along river Putaendo, 700 m, 17. v. 1993, Baccharis salicina [Baccharis salicifolia], river bed with open bushy vegetation (D. Burckhardt) # 10 (1, 2) (MHNG, dry); 1 ♂, 13 ♀, 1 immature, same but Los Patos, 35 km N San Felipe, 100 m, Baccharis salicina [Baccharis salicifolia], mediterranean scrub (D. Burckhardt) # 11 (2) (MHNG, dry); 14 ♂, 10 ♀, 3 immatures, same but Putaendo, 10 km N San Felipe, 32 ° 37 ' S 70 ° 42 ' W, 700 m, 26. xii. 1993, Baccharis salicina [Pingraea marginalis], river bed, quebrada vegetation (D. Burckhardt) # 35 (MHNG, dry); 2 ♂, 5 ♀, same but 15 km E Llay-Llay, 32 ° 52 ' S 70 ° 51 ' W, 600 m, 28. xii. 1993, Baccharis sp., Acacia caven steppe (D. Burckhardt) # 39 (MHNG, dry); 11 ♂, 18 ♀, 5 immatures, 1 immature skin, same but 10 km N San Felipe, 700 m, 15. xii. 1995, Baccharis sp., river bed, quebrada vegetation (D. Burckhardt) # 1 (3) (MHNG, dry, 70 % ethanol); 5 ♂, 4 ♀, same but El Tártaro, 20 km N San Felipe, Putaendo Valley, 1100 m, 24. xii. 1995, Baccharis sp., Acacia caven steppe (D. Burckhardt) # 23 (6) (MHNG, dry, 70 % ethanol); 1 ♂, 1 ♀, same but Putaendo, 10 km N San Felipe, 700 m, 27. xii. 1995, Baccharis salicina [Pingraea marginalis], river bed, quebrada vegetation (D. Burckhardt) # 27 (1) (NHMB, dry); 2 ♂, 3 ♀, 1 immature, same but 8 km N San Felipe, 12 – 13. i. 1997, Baccharis salicina [Pingraea salicifolia], dry river bed of Río Aconcagua, quebrada vegetation (D. Burckhardt) # 4 (3) (MHNG, 70 % ethanol); 1 ♂, 10 ♀, same but El Asiento, 10 km NW San Felipe, 900 m, 13 – 20. i. 1997, Baccharis salicina [Pingraea salicifolia], mediterranean scrub (D. Burckhardt) # 5 (1, 3) (MHNG, NHMB, dry, 70 % ethanol); 4 ♂, 12 ♀, same but Termas de Jahuel, 1000 m, 21. i. 1997, Baccharis salicina [Pingraea salicifolia], Acacia caven steppe with some planted exotic trees (D. Burckhardt) # 17 (5) (MHNG, 70 % ethanol); 2 ♂, 7 ♀, same but 1000 – 1100 m, 27. xii. 1998, Baccharis linearis (D. Burckhardt) # 8 (5) (NHMB, dry); 15 ♂, 26 ♀, 4 immatures, 2 immature skins, same but quebrada nr Jahuel, 900 m, Baccharis linearis, quebrada vegetation (D. Burckhardt) # 9 (1) (NHMB, dry, on slide, 70 % ethanol); 1 ♂, 3 ♀, same but km 16 Resguardo de Los Patos to Paso del Rubio, 1600 m, 1. i. 1999, Baccharis salicina [Pingraea salicifolia], Acacia caven steppe (D. Burckhardt) # 13 (3) (NHMB, dry); 2 ♀, same but km 20 Resguardo de Los Patos to Paso del Rubio, 1800 m, Baccharis linearis, semidesert and subalpine scrub (D. Burckhardt) # 11 (7) (NHMB, dry); 3 ♂, 2 immatures, same as holotype (NHMB, dry, 70 % ethanol); 8 ♂, 10 ♀, same but Termas de Jahuel, 32 ° 41.1 ' S 70 ° 35.4 ' W, 1180 m, Baccharis linearis, Acacia caven steppe with some planted exotic trees (D. Burckhardt) # 11 (4) (NHMB, dry, 70 % ethanol); 1 ♀, same but Resguardo de Los Patos, 32 ° 29.2 ' S 70 ° 33.9 ' W, 1350 m, 6. iii. 2009, Baccharis linearis, Acacia caven scrub (D. Burckhardt) # 14 (5) (NHMB, dry); 26 ♂, 14 ♀, 5 immatures, same as but Province Quillota, Cuesta la Dormida, 10 km W Tiltil, 33 ° 04 ' S 71 ° 02 ' W, 1200 m, 15. xi. 1992, Baccharis linearis, sclerophyll scrub on slope (D. Burckhardt) # 1 (NHMB, dry); 2 ♂, 1 ♀, same but Fundo Francesco Araya, 5. v. 1993, Baccharis salicina [Baccharis salicifolia], mediterranean scrub nr plantation (D. Burckhardt) # 7 (1) (MHNG, dry); 1 ♀, same but La Palma, Fundo Lothar Neserke, 300 m, 30. xii. 1998, Baccharis linearis, Acacia caven steppe and gully with mediterranean sclerophyll forest along very small river (D. Burckhardt) # 10 b (3) (NHMB, dry); 1 ♀, same but Province Valparaíso, 5 miles N of Concón, 16. xii. 1950 (E. S. Ross & A. E. Michelbacher) (CASC, dry); 3 ♂, 6 ♀, same but Embalse Los Aromos, nr Concón, 32 ° 55 ' S 71 ° 31 ' W, 100 m, 21. xi. 1992, Baccharis linearis, mediterranean scrub (D. Burckhardt) # 8 (NHMB, dry); 7 ♂, 10 ♀, same but Baccharis paniculata [Neomolina paniculata] (D. Burckhardt) # 8 (NHMB, dry); 1 ♀, same but Mantagua, nr Ritoque, 32 ° 53 ' S 71 ° 30 ' W, 20 m, Baccharis linearis (D. Burckhardt) # 9 (NHMB, dry); 4 ♂, 7 ♀, same but Estero Catapilco, nr Maitencillo, 32 ° 40 ' S 71 ° 27 ' W, 50 m, 22. xi. 1992, Baccharis salicina [Pingraea salicifolia], open sclerophyll forest (D. Burckhardt) # 10 (NHMB, dry); 1 ♀, Region Metropolitana, Province Chacabuco, Cuesta La Dormida, 7 – 10 km W Tiltil, 33 ° 04 ' S 71 ° 02 ' W, 950 – 1200 m, 28. xii. 1993, Baccharis sp., mediterranean sclerophyll scrub (D. Burckhardt) # 41 (MHNG, dry); 5 ♂, 7 ♀, same but Province Maipo, Maipo Valley, Motocoton, 10. i. 1985, Baccharis sp. (D. Hollis) (BMNH, on slide); 1 ♂, 1 ♀, same but Province Santiago, Corral Quemado to Farellones, 1700 m, 19. v. 1993, Baccharis sp., open mediterranean scrub (D. Burckhardt) # 14 (1) (MHNG, dry); 2 ♂, 1 ♀, VI Region, Province Cachapoal, Termas de Cauquenes, 800 m, 10. i. 1996, Baccharis linearis, mediterranean sclerophyll scrub (D. Burckhardt) # 40 (3) (MHNG, dry); 1 ♂, 7 ♀, same but Province Colchagua, Bellavista, Río Claro, 900 m, 11. i. 1996, Baccharis sp., degraded deciduous forest (D. Burckhardt) # 42 (7) (MHNG, dry, 70 % ethanol); 5 ♂, 7 ♀, 1 immature, 1 immature skin, same but La Rufina, Río Tinguiririca, 650 m, Baccharis linearis (D. Burckhardt) # 41 (1) (MHNG, dry, 70 % ethanol); 1 ♀, VII Region, Province Cauquenes, Reserva Nacional Los Ruiles, 25 km NW Cauquenes, 35 ° 49 ' S 72 ° 32 ' W, 300 – 450 m, 26 – 28. xi. 1992, Baccharis neaei, mixed Nothofagus forest (D. Burckhardt) # 16 (NHMB, dry); 8 ♂, 8 ♀, same but Province Talca, Armerillo to Las Garzas, Maule Valley, 60 – 80 km E Talca, 35 ° 45 ' S 71 ° 00 ' W, 700 m, 25. xi. 1992, Fabiana imbricata, degraded sclerophyll forest and scrub (D. Burckhardt) # 14 (NHMB, dry); 7 ♂, 7 ♀, same but Parque Gil de Vilches, Monumento Natural, 35 ° 35 ' S 71 ° 04 ' W, 1100 m, 4 – 5. i. 1994, Baccharis sp., mixed Nothofagus forest (D. Burckhardt) # 47 (MHNG, dry); 3 ♂, 7 ♀, same but sendero El Enladrillado, El Venado Valley, 1350 – 1700 m, 14. i. 1996, Baccharis sp. (D. Burckhardt) # 45 (3) (MHNG, dry, 70 % ethanol); 1 ♂, VIII Region, Province Bío-Bío, Laguna del Laja, sector Meseta del Toro, 1500 m, 20. i. 1996, Baccharis sp., Escallonia / Nothofagus antarctica scrub and Nothofagus pumilio forest (D. Burckhardt) # 55 (7) (MHNG, dry); 1 ♂, 2 ♀, same but Province Concepción, road Concepción to Cabrero, nr junction to Florida, 300 m, 18. i. 1996, Baccharis linearis, degraded sclerophyll scrub (D. Burckhardt) # 50 (1) (NHMB, dry); 4 ♂, 4 ♀, 1 immature skin, same but Province Ñuble, km 10 road Cabrero to Yungay, nr province border, 200 m, Baccharis linearis, sclerophyll scrub (D. Burckhardt) # 51 (1) (MHNG, NHMB, dry, 70 % ethanol); 1 ♀, IX Region, Province Malleco, Parque Nacional Nahuelbuta, 37 ° 49 ' S 73 ° 01 ' W, 1300 m, 16 – 17. xii. 1990, Baccharis zoellneri ssp. minor, Nothofagus antarctica forest (D. Agosti & D. Burckhardt) # 11 (MHNG, dry); 2 ♂, same but 10 km W Termas de Tolhuaca, 1100 m, 23. i. 1996, Baccharis sp., deciduous Nothofagus forest (D. Burckhardt) # 60 (2) (MHNG, dry); 17 ♂, 31 ♀, same but Parque Nacional Tolhuaca, sector Laguna Malleco, 900 m, 23 – 27. i. 1996, Baccharis tricuneata [Baccharis magellanica], mixed Nothofagus forest (D. Burckhardt) # 61 b (5) (MHNG, dry, 70 % ethanol); 4 ♂, 7 ♀, X Region, Province Osorno, Parque Nacional Puyehue, sector Mirador, Los Mallines, 700 m, 1 – 3. ii. 1996, Baccharis sp., open Nothofagus nitida scrub intergrading into sclerophyll rain forest (D. Burckhardt) # 72 b (3) (MHNG, dry, 70 % ethanol); 2 ♂, 6 ♀, 16 immatures, same but Province Valdivia, Monumento Natural Alerce Costero, nr El Mirador, ca 25 – 30 km W La Unión, 29. xii. 1990, 950 m, Baccharis zoellneri ssp. zoellneri, Baccharis scrub and transition to Nothofagus dombeyi forest (D. Agosti & D. Burckhardt) # 24 a (MHNG, dry); 5 ♂, 12 ♀, 1 immature, XII Region, Province Última Esperanza, Monumento Natural Cueva del Milodón, 150 m, 11. i. 1991, Baccharis mylodontis, open scrub with Nothofagus (D. Burckhardt) # 34 (MHNG, dry). Additional material. Chile: 15 ♂, 9 ♀, 1 immature, III Region, Province Copiapó, Quebrada de Paipote, 70 km NE Copiapó, 27 ° 09 ' S 69 ° 54 ' W, 1800 m, 12. xii. 1993, Baccharis sp., quebrada vegetation (D. Burckhardt) # 27 (MHNG, dry); 1 ♀, same but Province Huasco, 85 km S Vallenar, 29 ° 02 ' S 70 ° 52 ' W, 1000 m, 13. xii. 1993, Baccharis sp. (D. Burckhardt) # 32 (MHNG, dry); 5 ♂, 6 ♀, IV Region, Province Elqui, Pisco Elqui, nr Alcohuaz, 20. i. 1985, Baccharis sp. (D. Hollis) (BMNH, on slide); 10 ♂, 9 ♀, same but Nueva Elqui to La Laguna, ca 115 km E La Serena, 2600 m, 17. xii. 1995, Baccharis sp., scattered shrubs (D. Burckhardt) # 5 (1) (MHNG, dry, 70 % ethanol); 11 ♂, 11 ♀, same but La Laguna, ca 120 km E La Serena, 2800 – 3000 m, Baccharis sp., scattered shrubs (D. Burckhardt) # 4 (3) (MHNG, dry, 70 % ethanol); 4 ♂, 5 ♀, same but 20 km S Vicuña towards Hurtado, nr puente El Pangue, 1600 m, 18. xii. 1995, Baccharis sp., semidesert and quebrada with water (D. Burckhardt) # 8 (1) (MHNG, dry); 2 ♂, 2 ♀, same but ca 45 km ENE La Serena, Viñita Baja to Condoriaco, 800 – 1000 m, 19. xii. 1995, Baccharis salicina [Pingraea marginalis], quebrada and mountain slope (D. Burckhardt) # 10 (1) (MHNG, dry); 1 ♂, 3 ♀, V Region, Province Los Andes, 25 km W Portillo, route 60, Aconcagua Valley, 32 ° 50 ' S 70 ° 08 ' W, 1900 – 2100 m, 1. xii. 1993, Baccharis sp., subalpine / alpine scrub (D. Burckhardt) # 1 (MHNG, dry); 4 ♂, 1 ♀, same but Portillo, 1800 m, 31. xii. 1993, Haplopappus multifolius, alpine scrub (D. Burckhardt) # 43 (MHNG, dry); 3 ♂, 2 ♀, 1 immature, same but km 19 Portillo to Río Blanco, 1900 m, 23. xii. 1 995, Baccharis spp., subalpine scrub (D. Burckhardt) # 20 (5) (MHNG, dry, 70 % ethanol).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6587604FC609F8FCC7FD7D.taxon	description	Description. Coloration. General colour of body pale yellow to orange. Head including genal processes pale yellow to orange; clypeus bright yellow to orange. Eyes green-yellow to black, ocelli orange to red. Antenna yellow to pale brownish, segments 3 – 8 with dark brown apices, segments 9 – 10 entirely dark brown. Thorax pale yellow to orange, sometimes with indistinct greenish to brownish pattern: mesopraescutum with two patches along the fore margin; mesoscutum with four broad and, in the middle, one narrow longitudinal stripes; mesoscutellum slightly darker in the middle. Forewing with yellow veins and with semitransparent, amber-coloured membrane. Legs pale yellow to orange, meracanthus of metacoxa pale yellow to orange. Abdomen and terminalia pale yellow to orange. Female terminalia with dark apex. Structure. Head, in profile, strongly inclined from longitudinal body axis at 90 °. Vertex subtrapezoidal with indented foveae, anteriorly produced into transverse lobe on either side of mid-line, with slightly raised hind margin around lateral ocelli, covered with microscopical setae; genal processes conical, slender, subacute apically, shorter than vertex, covered with moderately long setae. Pronotum with one pronounced lateral and one relatively shallow sublateral tubercles on either side. Forewing oblong-oval, broadly, unevenly rounded apically; vein C + Sc weakly curved, pterostigma long, vein Rs straight or weakly sinuous, almost straight apically; vein M about as long as either of veins M 1 + 2 and M 3 + 4; surface spinules faint, present in all cells, leaving narrow to broad spinule-free stripes along the veins, sparsely spaced, forming indistinct hexagons in apical half, sometimes spinules entirely reduced in apical half of the wing; absent at least at base of cell c + sc; radular spinules covering triangular areas along the margin of cells r 2, m 1, m 2 and cu 1. Metatibia with 7 – 8 apical spurs. Terminalia. Male. Proctiger tubular; sparsely covered with moderately long setae in apical and posterior part. Subgenital plate short, subglobular; with sparsely spaced moderately long setae. Paramere narrowly lamellar, irregularly rounded apically; with long hook-shaped apico-anterior process on very short pedicel and lobe with apically sclerotised median tooth; lobe situated exterior to process; outer face sparsely covered with moderately long setae mostly in apical part, inner face densely, evenly covered with moderately long setae. Distal segment of aedeagus moderately elongate, weakly expanding towards apex; with short beak-like anterior process and one horn-shaped apico-posterior tubercle; lateral lobes long, slightly dilated towards apex which is concave. — Female. Proctiger subglobular, pointed apically; dorsal margin, in profile, strongly bent downwards; densely covered with moderately long setae in apical half. Subgenital plate cuneate, with short apical process; relatively densely covered with moderately long setae, dorsal margin with a row of bristles. Host-plants. Baccharis linearis (Ruiz & Pav.) Pers., B. mylodontis F. H. Hellw., B. neaei DC., B. paniculata DC., B. salicina Torr. & A. Gray, B. tricuneata (L. f.) Pers. and B. zoellneri F. H. Hellw. ssp. minor F. H. Hellw. and ssp. zoellneri F. H. Hellw. (Asteraceae). Adults were collected on Haplopappus multifolius Phil. ex Reiche (Asteraceae) which may be an additional host.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6587604FC609F8FCC7FD7D.taxon	distribution	Distribution. Chile (III – X, XII Regions, Region Metropolitana). Derivation of name. From Ancient Greek ξανθός = yellow, referring to the species’ body colour.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6587604FC609F8FCC7FD7D.taxon	discussion	Comments. The specimens from Chile previously assigned to Russelliana intermedia in Burckhardt et al. (2012) belong to R. xantha sp. nov. Russelliana xantha resembles R. adela, bicolorata and intermedia; see comments under R. adela. R xantha differs from the three species in an evenly bright yellow body colour. R. xantha differs from R. adela in a yellow forewing membrane and a female proctiger with its dorsal margin bent downwards, from R. bicolorata in a shape of the forewing which is broadest in the apical third, and from R. intermedia in less dense surface spinules of the forewing membrane and the absence of a median hump of the paramere.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6587604FC609F8FCC7FD7D.taxon	description	Unnamed species. The following taxa represent undescribed Russelliana species that are not formally described and named here due to insufficient material, or its poor state.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6F87604FC60AF4FD14F8B2.taxon	materials_examined	Material examined. Argentina: 2 ♂, Province Mendoza, km 18 Mendoza to Villa Vicencia, 700 m, 18. i. 1997, pampa (D. Burckhardt) # 13 (NHMB, dry).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6F87604FC60AF4FD14F8B2.taxon	discussion	Comments. The specimens resemble R. nana and queirozae in a pale yellow body colour and in an oblongoval paramere bearing an apico-anterior process on a pedicel, situated interiorly to an apico-posterior lobe. They differ from the two species in the absence of genal processes, and a shape of the process and a lobe of the paramere. The specimens differ from R. nana in a short cell m 1 of the forewing, and from R. queirozae in a shape of the forewing which is broadest in its apical third.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6F87604FC60BBBFD52FAC7.taxon	materials_examined	Material examined. Argentina: 1 ♀, 1?, Province Mendoza, Luján, Cacheuta, 31. vii. 1994, Larrea divaricata (G. Debandi) (NHMB, dry).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6F87604FC60BBBFD52FAC7.taxon	discussion	Comments. The specimens resemble R. adesmiae and longirostro, in the presence of the three distinct tubercles on the pronotum, and in a forewing membrane with a similar distinct brown pattern. Due to a poor state of the specimens, their identification is problematical.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6F87604FC60C22FAD3FB82.taxon	materials_examined	Material examined. Argentina: 1 ♀, Province Río Negro, El Bolsón, 680 m, 1. iv. 1961 (G. Topál) (MHNG, on slide).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6F87604FC60C22FAD3FB82.taxon	discussion	Comments. The specimen resembles R. fabianae and viscosae in a short antenna, a yellow forewing membrane, a female proctiger with a convex, strongly indented dorsal margin subapically, and a subglobular subgenital plate. It differs from R. fabianae in shorter genal processes, and from R. viscosae in the presence of very dense surface spinules in all cells of the forewing membrane, leaving no spinule-free stripes along the veins.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6F87614FC60869FCA6FED4.taxon	materials_examined	Material examined. Argentina: 2 ♂, 2 ♀, 1 immature, Province Mendoza, above Villa Vicencia, 50 km NW Mendoza, 1800 – 2200 m, 18. i. 1997, Baccharis sp., low scrub (D. Burckhardt) # 15 (5) (NHMB, dry).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6F87614FC60869FCA6FED4.taxon	discussion	Comments. The specimens resemble R. adela, bicolorata, intermedia and xantha, in long genal processes and long antennae. They differ from the four species in very sparse surface spinules in the apical part of the forewing membrane and their absence in the cell c + sc, and a different shape of the paramere bearing an apico-anterior process on a long pedicel. The specimens differ from R. adela in a yellow forewing membrane and a female proctiger with a dorsal margin bent downwards, and from R. bicolorata in an evenly yellow body colour and a shape of the forewing which is broadest in its apical third.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6E87614FC60CA3FDBEFAAF.taxon	materials_examined	Material examined. Argentina: 1 ♂, 2 ♀, Province Mendoza, above Villa Vicencia, 50 km NW Mendoza, 1800 – 2200 m, 18. i. 1997, low scrub (D. Burckhardt) # 15 (NHMB, dry).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6E87614FC60CA3FDBEFAAF.taxon	discussion	Comments. The specimens resemble R. nana and queirozae in a pale yellow body colour, in an oblong-oval paramere bearing an apico-anterior process on a pedicel, situated interiorly to an apico-posterior lobe, a cuneate female proctiger with a dorsal margin conspicuously bent downwards in its apical third and bearing short thick bristles, and in a cuneate subgenital plate bearing a very long apical process. The male specimen differs from the two species in a shape of the process and a lobe of the paramere. The specimens differ from R. queirozae in long genal processes, a shape of the forewing which is broadest in its apical third, and a female subgenital plate bearing short thick bristles in the apical third.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6E87614FC60A51FDA2F9EF.taxon	materials_examined	Material examined. Bolivia: 1 ♀, Department Chuquisaca, Province Nor Cinti, Padcoya to Camargo, 2800 – 3200 m, 26 – 28. xii. 1984 (L. E. Peña) (MHNG, dry).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6E87614FC60A51FDA2F9EF.taxon	discussion	Comments. A forewing membrane is pale brown with an indistinct parallel brown stripe stretching from a bifurcation of the vein M to the base of the cell r 2; surface spinules are very dense, present in all cells and leave no spinule-free stripes along the veins.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6E87614FC6098CFD40F810.taxon	materials_examined	Material examined. Bolivia: 1 ♀, Department Oruro, Province Cercado, 2 km W Leque Palca, 17 ° 38.2 ' S 66 ° 58.4 ' W, 3950 m, 23. iii. 2001 (A. Freidberg) (NHMB, dry).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6E87614FC6098CFD40F810.taxon	discussion	Comments. The specimen resembles R. adesmiae and longirostro, in a forewing membrane with a distinct brown pattern, and in a cuneate female proctiger and cuneate subglobular plate bearing a short apical process. It differs from the two species in a bigger body size.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6E87614FC60E90FD16FCFB.taxon	materials_examined	Material examined. Argentina: 1 ♀, Province Mendoza, Mendoza Valley, Punta de Vacas, 2400 m, 30. xii. 1995, Verbena sp., subalpine / alpine scrub (D. Burckhardt) # 28 (MHNG, dry); 1 ♀, same but above Villa Vicencia, 50 km NW Mendoza, 1800 – 2200 m, 18. i. 1997, Mulguraea scoparia [Diostea scoparia], low scrub (D. Burckhardt) # 15 (7) (MHNG, dry); 2 ♂, 1 ♀, same but Zoológico, vii. 1997 (S. Roig) (NHMB, dry).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6E87614FC60E90FD16FCFB.taxon	distribution	Distribution. Reported as Russelliana sp. from Argentina (Mendoza) (Burckhardt 2008 b).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6E87614FC60E90FD16FCFB.taxon	discussion	Comments. The specimens resemble R. marionae and theresae, in long genal processes, long antennae, and in the presence of a distinct brown pattern on the forewing membrane. They differ from the two species in a smaller body size and details of the forewing pattern.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6D87624FC60FAAFF5DFDA6.taxon	materials_examined	Material examined. Bolivia: 1 ♀, Department Oruro, Province Cercado, 2 km W Leque Palca, 17 ° 38.2 ' S 66 ° 58.4 ' W, 3950 m, 23. iii. 2001 (A. Freidberg) (NHMB, dry); 1 ♀, Department La Paz, Province Pedro Domingo Murillo, 6 km NE La Paz, 16 ° 25.7 ' S 68 ° 04.3 ' W, 4130 m, 19. iii. 2001 (A. Freidberg) (NHMB, dry); 1 ♀, same but 14 km S El Alto, 16 ° 40.1 ' S 68 ° 11 ' W, 3900 m, 20. iii. 2001 (A. Freidberg) (NHMB, dry).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6D87624FC60FAAFF5DFDA6.taxon	discussion	Comments. The specimens resemble R. fabianae and viscosae in a short antenna, in a yellow forewing membrane, in a female proctiger with a convex, subapically strongly indented dorsal margin, and a subglobular subgenital plate. They differ from the two species in longer genal processes, and from R. viscosae in the presence of very dense surface spinules in all cells of the forewing membrane, leaving no spinule-free stripes along the veins.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6D87624FC60A00FAF9FA54.taxon	materials_examined	Material examined. Chile: 1 ♀, V Region, Province San Felipe de Aconcagua, Quebrada del Tigre, Zapallar, 32 ° 33 ' S 71 ° 28 ' W, 12. viii. 1966 (R. H. Gonzalez) (CASC, dry).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6D87624FC60A00FAF9FA54.taxon	discussion	Comments. Due to a poor state of the specimen, its further description and identification are problematical.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6D87624FC60905FC83F8DE.taxon	materials_examined	Material examined. Chile: 1 ♀, IX Region, Loncoche, nr El Liuco, 28 – 29. i. 1985, Baccharis sp. (D. Hollis) (BMNH, on slide).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6D87624FC60905FC83F8DE.taxon	discussion	Comments. The specimen resembles R. adela, bicolorata, intermedia and xantha, in long genal processes and long antennae. It differs from the four species in very dense surface spinules on the forewing membrane, present in all cells and leaving no spinule-free stripes along the veins, and from R. adela, intermedia and xantha in a shape of the forewing which is broadest in its middle. From R. adela it also differs in a yellow forewing membrane and a female proctiger with a dorsal margin bent downwards.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6D87624FC60D57FD36FC14.taxon	materials_examined	Material examined. Chile: 1 ♀, I Region, Province Parinacota, Misituni, 25. xi. 1965 (I. Loksa) (MHNG, on slide).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6D87624FC60D57FD36FC14.taxon	discussion	Comments. The specimen resembles R. nana and queirozae in a cuneate female proctiger with a dorsal margin conspicuously bent downwards in its apical third and bearing short thick bristles, and in a cuneate subgenital plate bearing a very long apical process. They differ from the two species in the presence of a brown stripe on the forewing membrane stretching from a base of the vein Rs, along the vein Cu 1 b, to its apex. The specimen differs from R. nana in a shape of the forewing which is broadest in its middle and bears large surface spinules, and from R. queirozae in a longer cell m 1 of the forewing.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6D87624FC60CC7FBCAFB5B.taxon	materials_examined	Material examined. Chile: 1 ♂, 1 ♀, IV Region, Province Elqui, 5 – 10 km S Vicuña, 30 ° 05 ' S 70 ° 40 ' W, 750 – 950 m, 5. xii. 1993, Adesmia kingii, semidesert (D. Burckhardt) # 11 (MHNG, dry).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6D87624FC60CC7FBCAFB5B.taxon	discussion	Comments. The specimens resemble R. vinculipennis in a paramere bearing a hook-shaped apico-anterior process on a pedicel and in a long female terminalia. They differ from R. vinculipennis in a lighter body colour, a shape of the forewing and the presence of a more extensive pattern on its membrane.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6C87634FC60FAAFD80FE43.taxon	materials_examined	Material examined. Chile: 1 ♂, XII Region, Province Última Esperanza, Paso de la Laguna Dorotea, W Puerto Natales, 250 m, 10. i. 1991, Senecio tricuspidatus, pasture with Nothofagus antarctica (D. Burckhardt) # 33 (MHNG, dry).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6C87634FC60FAAFD80FE43.taxon	discussion	Comments. The specimen resembles R. adunca and caunda in a colourless forewing membrane bearing faint surface spinules. The specimen differs from the two species in longer genal processes and a shape of the paramere bearing an apico-posterior lobe which is strongly bulged posteriorly. The latter resembles a condition in R. disparilis but the specimen differs from R. disparilis in the presence of surface spinules on the forewing membrane which are absent in R. disparilis.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6C87634FC60D7BFBA1FCA0.taxon	materials_examined	Material examined. Chile: 1 ♀, II Region, Province Antofagasta, Salar de Ascotán, 4000 m, 21 ° 31 ' S 68 ° 18 ' W, vii. 1997, Adesmia atacamensis (F. Saiz) # Q (NHMB, dry).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6C87634FC60D7BFBA1FCA0.taxon	discussion	Comments. The specimen has short antennae. A forewing membrane is colourless, slightly fumose in the middle of cells in its apical half, and with a pale brown patch along the vein Cu 1 b.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6C87634FC60C55FD56FBE6.taxon	materials_examined	Material examined. Chile: 1 ♀, II Region, Province Antofagasta, Salar de Ascotán, 4000 m, 21 ° 31 ' S 68 ° 18 ' W, vii. 1997, Acantholippia trifida (F. Saiz) # P (NHMB, dry); 1 ♂, 1 ♀, Province El Loa, Altos de Caspana, 22 ° 26 ' S 68 ° 09 ' W, 4100 m, vii. 1997, Paratrephia lepidophylla [not on the Plant List] (F. Saiz) # S (NHMB, dry).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6C87634FC60C55FD56FBE6.taxon	discussion	Comments. A forewing membrane is yellow, lacking a pattern; surface spinules are dense, present in all cells and leaving no spinule-free stripes along the veins.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6C87634FC60B97FF48FA53.taxon	materials_examined	Material examined. Chile: 3 ♂, V Region, Province Los Andes, El Juncal, 2200 m, 24. xii. 1998, alpine scrub with low bushes (D. Burckhardt) # 6 (NHMB, dry).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6C87634FC60B97FF48FA53.taxon	discussion	Comments. The specimens resemble R. marionae and theresae, in long genal processes, long antennae, a forewing membrane with a distinct brown pattern, and in a paramere bearing a finger-shaped apico-anterior process of a length subequal to an apico-posterior lobe. They differ from the two species in a smaller size and a less extensive forewing pattern which is mostly restricted to its apical part, and from R. marionae in a broader paramere lobe.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6C871C4FC60908FD8DFF64.taxon	materials_examined	Material examined. Chile: 2 ♂, 3 ♀, V Region, Province San Felipe de Aconcagua, km 20 Resguardo de Los Patos to Paso del Rubio, 1800 m, 1. i. 1999,? Senecio sp., semidesert and subalpine scrub (D. Burckhardt) # 11 (3) (NHMB, dry).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B6C871C4FC60908FD8DFF64.taxon	discussion	Comments. The specimens resemble R. adela, bicolorata, intermedia and xantha, in a paramere bearing a long hook-shaped apico-anterior process which is situated interiorly to an apico-posterior lobe. They differ from the four species in very long genal processes, and from R. bicolorata in an evenly yellow body colour. Undetermined species. The following females and immatures could not be associated with males which are needed for species identification.	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B13871C4FC60E1AFB18FE42.taxon	materials_examined	Material examined. Argentina: 1 ♀, Province Chubut, 19.9 km N Malaspina, 550 m, 13. xii. 1966 (E. I. Schlinger & M. E. Irwin) (CASC, dry); 1 ♀, Province Mendoza, Mendoza Valley, Punta de Vacas to Uspallata, 1900 m, 16 – 19. i. 1997, steppe vegetation (D. Burckhardt) # 9 (NHMB, dry). Chile: 1 ♀, XII Region, Province Magallanes, Estación La Cumbre, Sierra Baguales, 5. xii. 1987, Senecio sp. (J. Petersen C.) (MHNG, dry).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
264F87F78B13871C4FC60D7BFB56FC13.taxon	materials_examined	Material examined. Bolivia: 1 immature, Department Chuquisaca, Province Nor Cinti, Lecori, S Potosi, 3200 m, 26 – 27. xii. 1984 (L. E. Peña) (MHNG, on slide). Chile: 1 immature, II Region, Quebrada Chita, 22 ° 25 ' S 68 ° 08 ' W, 3850, vii. 1997, Fabiana squamata (F. Saiz) # R (NHMB, on slide); 6 immatures, 1 immature skin, IV Region, Province Elqui, La Laguna, ca 120 km E La Serena, 2800 – 3000 m, 17. xii. 1995, Adesmia sp., scattered shrubs (D. Burckhardt) # 4 (1) (MHNG, 70 % ethanol); 1 immature, V Region, Province Los Andes, Río Blanco, Aconcagua Valley, 1400 m, 23. xii. 1995, mediterranean scrub (D. Burckhardt) # 22 (MHNG, dry); 15 immatures, IX Region, Province Cautín, Parque Nacional Conguillío, Sierra Nevada, 38 ° 36 ' S 71 ° 38 ' W, 1600 m, 20. xii. 1990, Chiliotrichum rosmarinifolium, subalpine scrub (D. Agosti & D. Burckhardt) # 15 (NHMB, dry).	en	Serbina, Liliya, Burckhardt, Daniel (2017): Systematics, biogeography and host-plant relationships of the Neotropical jumping plant-louse genus Russelliana (Hemiptera: Psylloidea). Zootaxa 4266 (1): 1-114, DOI: 10.5281/zenodo.575325
