taxonID	type	description	language	source
038F4646FF920878FDC3D6AAFDE6F940.taxon	diagnosis	Diagnosis Male imago. (1) Body usually with small red spots; (2) dorsal portion of turbinate eyes oval or circular, not touching each other; (3) forewing hyaline, sometimes pigmented; (4) marginal intercalary veins single or paired; (5) hind wing with three longitudinal veins; (6) costal process of hind wing located on basal third; (7) forceps segment II narrow medially (Domínguez et al. 2006, adapted). Female imago. (1) Body usually with small red spots; (2) forewing usually pigmented; (3) marginal intercalary veins single or paired; (4) hind wing with three longitudinal veins; (5) costal process of hind wing located on basal third (Domínguez et al. 2006, adapted). Mature nymph. (1) Head without frontal keel; (2) anterior margin of labrum with small or deep medial emargination; (3) mandibles with incisors deeply cleft; (4) inner set of incisors at oblique angle with outer set; (5) mandibles always with tuft of setae between prostheca and mola; (6) lingua with rounded projection apically, longer than superlingua; (7) maxillary palp with two segments; (8) second segment of labial palp without distomedial projection; (9) third segment of labial palp concave; (10) hind wing pads present; (11) tibio-patellar suture present in all legs; (12) tarsal claws of foreleg with two rows of long denticles; (13) small spines present at the rear margins of abdominal terga II to X; (14) gills on abdominal segments I to VII; (15) gills, at least on segments I to VI with folds; (16) posterior margin of paraprocts with spines; (17) terminal filament shorter than cerci; (18) body without scales or base of scales (Domínguez et al. 2006, adapted).	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF950870FE58D4EFFC7EFA35.taxon	description	(Figures 1 – 4) urn: lsid: zoobank. org: act: 8 EAC 97 D 4 - 43 C 9 - 4 C 74 - AE 70 - 0275176 EB 574 Known stages: I ♀ ♂, N	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF950870FE58D4EFFC7EFA35.taxon	diagnosis	Diagnosis Male imago. (1) Dorsal portion of turbinate eyes oval (Figure 1 A); (2) forewing hyaline with black bands transversally, medially with transversal band complete, apical third little or not pigmented (Figure 1 D); (3) marginal intercalary veins paired (Figure 1 D); (4) hind wing hyaline with brown mark medially and apically (Figure 1 E – G); (5) costal process of hind wing compound (Figure 1 E – G); (6) abdominal sterna brown with one mark sublaterally; (7) forceps segment I wide at base (Figure 1 C). Female imago. (1) Forewing completely dark brown, meeting of longitudinal veins with the posterior margin white (Figure 1 I); (2) marginal intercalary veins paired (Figure 1 I); (3) hind wing completely dark brown with white veins (Figure 1 J – L); (4) costal process of hind wing compound (Figure 1 J – L); (5) abdominal sterna anterolaterally with red mark; submedially on middle region with two brown marks; sublaterally on anterior region with one reddish mark (Figure 1 M); (6) abdominal terga III, V and VII with two oblique red marks (Figure 1 H). Mature nymph. (1) Antenna without spines or fine, simple setae (Figure 2 A); (2) distal margin of labrum with deep medial emargination (Figure 2 B); (3) lateral and anterolateral margin of labrum with long, fine simple setae; distal margin medially with short, robust frayed setae (Figure 2 B); (4) maxillary palp short, less than two-thirds length of galea-lacinia (Figure 2 F); (5) glossa longer than paraglossa (Figure 2 G); (6) labial palp segment I with spine-like setae (Figure 2 G, H); (7) anterior surface of forefemur with robust spine-like setae near dorsal margin and without setae near ventral margin (Figure 3 B); (8) fore tarsus ventrally with one row of short and long spine-like setae (Figure 3 C); (9) mid and hind femora similar to foreleg; (10) mid and hind tarsal claw without minute spines on surface (Figure 3 F); (11) gills VII with one fold (Figure 4 G); (12) cerci with short spines on all segments (Figure 4 I); (13) terminal filament with spines on every three segments (Figure 4 J).	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF950870FE58D4EFFC7EFA35.taxon	description	Description Male imago. Length: body, 5.4 mm; forewing, 4.8 mm; hind wing, 0.8 mm; antenna, 1.2 mm; tibia, 1 mm. (n = 2) Head (Figure 1 A, B). Coloration brown. Turbinate portion of compound eyes dorsally yellowish brown, stalk yellowish brown, basally brown. Antenna with scape, pedicel and flagellum dark brown. Dorsal portion of turbinate eyes oval; length (L in Figure 1 A) 1.4 × width (W in Figure 1 A); stalk height (SH in Figure 1 B) 1.1 × dorsal portion height (DPH in Figure 1 B); inner margins parallel, not reaching each other. Thorax (Figure 1 A, B). Anteronotal protuberance medially light brown, submedially brown, laterally light brown; mesoscutum brown; submesoscutum light brown; posterior scutal protuberance and scutellum brown. Anteronotal and metascutellar protuberance rounded. Legs. Femur I with trachea E D black pigmented in posterior surface, tibia I with brown mark basally on ventral margin and other apically on dorsal margin, tarsus I brown; femora II and III similar femur I; tibiae II and III with light brown mark basally on ventral margin and other apically on dorsal margin, tarsi II and III light brown. Leg I: tibia 0.7 × length of femur; tarsus 0.5 × length of femur. Leg III: tibia 0.7 × length of femur; tarsus 0.4 × length of femur. Wings. Forewing (Figure 1 D) hyaline with black bands transversally, medially with transversal band complete; apical third with little or no pigmentation; veins white; stigmatic area with 10 cross veins touching subcostal vein; marginal intercalary veins (red arrow in Figure 1 D) paired; length of each intercalary vein 0.5 – 0.8 × distance between adjacent longitudinal veins; length of forewing (LF in Figure 1 D) about 2.7 × width (WF in Figure 1 D). Hind wing (Figure 1 E – G) hyaline with brown mark medially and apically; with nine cross veins; costal process compound. Abdomen. Terga brown with two light brown marks submedially; tracheation not pigmented. Sterna brown with one mark sublaterally. Caudal filaments lost. Genitalia (Figure 1 C). Forceps whitish brown. Forceps segment I wide at base; 0.4 × length of segment II; distance between base of forceps (BF in Figure 1 C) 0.25 × distance between lateral margins of forceps (LMF in Figure 1 C). Forceps segment III oval, 1.5 × as long as wide; 0.1 × length of segment II. Posterior margin of styliger plate with small medial projection. Female imago. Length: body, 6.9 mm; cercus, 7.2 mm; forewing, 5.4 mm; hind wing, 2.2 mm; antenna, 0.8 mm; tibia I, 1 mm; tibia II, 1.2 mm; tibia III, 1.2 mm. (n = 2). Head (Figure 1 H). Coloration brown, with dark brown areas; compound eyes black. Antenna with scape brown, pedicel dark brown and flagellum dark brown with base white. Thorax (Figure 1 H, M). Pronotum with two red marks sublaterally; anteronotal protuberance dark brown; mesoscutum light brown; submesoscutum dark brown; posterior scutal protuberance dark brown and brown; scutellum white. Anteronotal and metascutellar protuberance rounded. Legs. Femora I, II and III with trachea black pigmented in posterior surface, one red mark in base of posterior surface; tibiae I, II and III light brown with one dark brown mark on base ventrally and other on apex dorsally; tarsi I, II and II light brown. Leg I: tibia 1.1 × length of femur; tarsus 0.75 × length of femur. Leg II: tibia 0.9 × length of femur; tarsus 0.5 × length of femur. Leg III: tibia 0.8 × length of femur; tarsus 0.3 × length of femur. Wings. Forewing (Figure 1 I) completely dark brown, meeting of longitudinal veins with the posterior margin white; veins white; stigmatic area with 10 cross veins touching subcostal vein; marginal intercalary veins paired; length of each intercalary vein 0.5 – 0.7 × distance between adjacent longitudinal veins; length of forewing about 2.3 × width. Hind wing (Figure 1 J – L) completely dark brown with white veins; one incomplete, not reaching apex of hind wing and two complete longitudinal veins; one or two marginal intercalary veins; wing with 11 – 17 cross veins; costal process compound. Abdomen (Figure 1 H, M). Terga white with many brown spots and two brown marks submedially; laterally and sublaterally with red marks, terga III, V and VII with two oblique red marks. Tracheation black. Sterna light brown with many brown spots; anterolaterally with red mark; submedially on middle region with two brown marks; sublaterally on anterior region with one reddish mark. Caudal filaments white with base of segments dark brown. Mature nymph. Length: body, 6.8 mm; cercus, 4.9 mm; terminal filament, 2.4 mm; antenna, 6 mm. (n = 2) Head. Coloration: light brownish yellow. Turbinate portion of male compound eyes yellowish brown. Antenna white, without spines or fine, simple setae (Figure 2 A). Labrum (Figure 2 B). Excavate medially; length about 0.8 × maximum width; distal margin with deep medial emargination; lateral and anterolateral margins with long, fine simple setae; distal margin medially with short and robust frayed setae; dorsally with many, long, fine, simple setae scattered over anterolateral surface; submarginal row of setae absent; ventrally with short, spine-like setae near lateral margin and many long, simple setae near anterolateral margin. Right mandible (Figure 2 C) with 4 + 3 denticles; prostheca slender and simple; margin between prostheca and mola convex; tuft of spine-like setae at base of mola present. Denticles of mola apically constricted. Tuft of setae at apex of mola present; lateral margins slightly convex; basal half with short, fine, simple setae and pores scattered over dorsal surface. Left mandible (Figure 2 D) with 4 + 3 denticles; prostheca robust and bifid; margin between prostheca and mola concave; tuft of spine-like setae at base of mola present; subtriangular process wide, at the same level as area between prostheca and mola; denticles of mola not constricted; tuft of setae at apex of mola present; lateral margins slightly convex; basal half with short, fine, simple setae and pores scattered over dorsal surface. Hypopharynx (Figure 2 E). Lingua with three lobes in distal margin; superlingua not expanded; short, fine, simple setae scattered over distal margin of lingua and superlingua. Maxilla (Figure 2 F). Double row of setae with spines on outer margin, two denti-setae with spines and one bipectinate. Medial protuberance of galea with 1 + 5 spine-like setae. Maxillary palp short, less than two-thirds length of galea-lacinia; palp segment II 0.2 × length of segment I; outer margin of segment I scattered with robust, short, pointed setae and long, fine, simple setae; segment II without setae. Labium (Figure 2 G, H). Glossa basally narrow and longer than paraglossa; inner margin with 14 spine-like setae; apex with three to five long spine-like setae; outer margin with many long spine-like setae. Ventral surface scattered with short, fine, simple setae. Paraglossa curved inward; apex bare. Ventrally with many long, fine, simple setae. Labial palp with segment I 0.8 × length of segments II and III combined; segment I covered with micropores, near outer margin with robust simple setae; segment II without distomedial protuberance; inner and outer margin, respectively, with five robust, short spine-like setae and simple, fine and long setae; dorsally with row of six short spine-like setae; segment III concave; length 2.3 × width; covered with spine-like simple setae along margins and fine, simple setae, scattered over outer surface. Thorax. Light brownish yellow. Foreleg (Figure 3 A – C). White with black spots on posterior surface. Ratio of foreleg 1.6: (0.6 mm): 0.8: 0.6. Forefemur. Length about 6 × maximum width; dorsally with row of short, spine-like setae; apex with two robust spine-like setae; length of setae about 0.2 × maximum width of femur; ventrally with one row of short spine-like and long spine-like setae. Anterior surface with robust spine-like setae near dorsal margin and without setae near ventral margin. Tibia. Dorsally with one or four short spine-like setae and with many long, fine, simple setae; ventrally with one row of short and long spine-like setae. Anterior surface with row of short, robust spine-like setae. Tarsus. Dorsally bare; ventrally one row of short and long spine-like setae. Tarsal claw with two rows of denticles increasing in size distally, many minutes spines on surface. Hind leg (Figure 3 D – F) similar foreleg except tarsal claw, without minute spines on surface. Abdomen (Figure 4 A). Light brownish yellow. Terga. Posterior margin with regular spines, 3 × as long as wide (Figure 4 B). Sterna. Surface with scattered fine, simple setae. Gills (Figure 4 C – G). Margin with short, fine and simple setae; trachea black pigmented, extending from main trunk to outer margin. Gill I about 2 × length of segment II, with two folds; trachea black pigmented. Gill IV as long as length of segments V to VI combined, with two folds. Gill VII as long as length of segments VIII to half IX combined, with one fold. Paraproct (Figure 4 H) with 25 – 30 marginal spines; surface with micropores and short, fine, simple setae; posterolateral extension with marginal spines. Terminal filament (Figure 4 J) light brownish yellow; posterior margin of segments with spines on every three segments. Cerci (Figure 4 I) with short spines on all segments.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF950870FE58D4EFFC7EFA35.taxon	etymology	Etymology The specific epithet is a reference to the beauty of the abdominal colour pattern (calloventer, from Greek and Latin, meaning “ beautiful abdomen ”).	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF950870FE58D4EFFC7EFA35.taxon	discussion	Comments The adults of C. calloventer sp. nov. and C. cruentus sp. nov. are similar, female imago of C. calloventer sp. nov. has two red marks on abdominal terga III, V and VII (Figure 1 H), while these marks are absent in C. cruentus sp. nov. (Figure 5 G); male imago of C. calloventer sp. nov. has forceps segment I wide at base (Figure 1 C), while C. cruentus sp. nov. has forceps segment I cylindrical (Figure 5 C).	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF950870FE58D4EFFC7EFA35.taxon	materials_examined	Material examined Holotype. female imago, BRAZIL, Rondônia, Porto Velho, Lake of Reserva Kaiari (8 ◦ 51 ′ 7.38 ′′ S, 63 ◦ 57 ′ 33.72 ′′ W), 26 / v / 2007, P. V. Cruz col. (INPA). Paratypes. male imago, two female subimagos, nymph, Lake of Reserva Kaiari, 26 / v / 2007, P. V. Cruz col. (CZNC). Nymph, Lake of Reserva Kaiari, 8 / vi / 2007, P. V. Cruz col. (INPA). Male imago, BRAZIL, Roraima, Boa Vista, 13 / xi / 2006, illuminated sheet, J. N. Falcão col. (INPA). Female imago, BRAZIL, Amazonas, Presidente Figueiredo, Igarapé Pantera (1 ◦ 28 ′ 29.82 ′′ S, 60 ◦ 16 ′ 26.52 ′′ W), AM 240 – Km 20, 20 / x / 2008, illuminated sheet, P. V. Cruz col. (INPA). Seven exuviae, 11 female subimagos, female imago, 10 nymphs, BRAZIL, Amazonas, Manaus, Reserva Biológica de Cuieiras – ZF 2 (03 ◦ 10 ′ 59.9 S, 060 ◦ 05 ′ 17.7 ′′ W), sheet and reared, 06 / vi / 2008, P. V. Cruz col. (INPA). Eight male imagos, seven male subimagos, 25 female imagos, six female subimagos, BRAZIL, Amazonas, Manaus, Reserva Biológica de Cuieiras – ZF 2, sheet and reared, 14 / vii / 2008, P. V. Cruz col. (INPA).	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF950870FE58D4EFFC7EFA35.taxon	distribution	Distribution Brazil: Rondônia state, Porto Velho county; Roraima state, Boa Vista county; Amazonas state, Presidente Figueiredo county and Manaus county.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF9A0877FE20D27CFF56F970.taxon	diagnosis	Diagnosis Male imago. (1) Dorsal portion of turbinate eyes oval, inner margins parallel (fig. 27 in Cruz et al. 2009); (2) forewing hyaline (fig. 29 in Cruz et al. 2009); (3) marginal intercalary veins paired, except between veins ICu 1 and A (fig. 29 in Cruz et al. 2009); (4) hind wing hyaline (fig. 30 in Cruz et al. 2009); (5) costal process of hind wing compound (fig. 30 in Cruz et al. 2009); (6) abdominal sterna light brown with many red spots, two red marks laterally and other sublaterally, medially with brown mark; (7) forceps segment I wide at base (fig. 31 in Cruz et al. 2009). Female imago. (1) Forewing hyaline (fig. 33 in Cruz et al. 2009); (2) marginal intercalary veins paired, except between veins CuA and A (fig. 33 in Cruz et al. 2009); (3) hind wing hyaline, two complete longitudinal veins and one incomplete (fig. 34 in Cruz et al. 2009); (4) costal process of hind wing compound (fig. 34 in Cruz et al. 2009); (5) abdominal sterna reddish brown with many red spots, one mark laterally and sublaterally (fig. 35 in Cruz et al. 2009); (6) abdominal terga with red spots medially. Mature nymph. (1) Antenna with spines and fine simple setae on apex of each segment (fig. 36 in Cruz et al. 2009); (2) distal margin of labrum (fig. 37 a in Cruz et al. 2009) with deep medial emargination, laterally with long, fine and simple setae (fig. 37 a in Cruz et al. 2009); (3) distal margin of labrum medially with long, fine and apically bifid setae; (4) maxillary palp reaching apex of galea-lacinia (fig. 41 b in Cruz et al. 2009); (5) glossa broad and shorter than paraglossa (fig. 42 a in Cruz et al. 2009); (6) outer margin of labial palp with few short, fine, simple setae (fig. 42 a in Cruz et al. 2009); (7) anterior surface of forefemur with robust spine-like setae near dorsal margin and robust three- and two-pointed spine-like setae near ventral margin (fig. 43 b in Cruz et al. 2009); (8) fore tarsus dorsally bare; ventrally one row of spine-like setae and one row of trifid spine-like setae (fig. 43 c in Cruz et al. 2009); (9) mid and hind femora without robust trifid spine-like setae near ventral margin (fig. 44 a in Cruz et al. 2009); (10) mid and hind claws with two rows of minute denticles (fig. 44 b in Cruz et al. 2009); (11) gill VII subequal in length to segment VIII, with one fold (fig. 49 in Cruz et al. 2009); (12) cerci with spines on each segment (fig. 51 in Cruz et al. 2009); (13) terminal filament with spines on each segment (fig. 52 in Cruz et al. 2009).	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF9A0877FE20D27CFF56F970.taxon	materials_examined	Material examined Female imago with corresponding nymphal exuviae, BRAZIL, Espírito Santo, Santa Teresa, (19 ◦ 52 ′ 30.9 ′′ S, 40 ◦ 32 ′ 07.4 ′′ W), pool, sand, 26 / x / 2008, Salles, F. F. col. (INPA). One male imago (reared), 20 nymphs, BRAZIL, Espírito Santo State, Santa Teresa County, (19 ◦ 52 ′ 30.9 ′′ S, 40 ◦ 32 ′ 07.4 ′′ W), pool, sand, 26 / x / 2008, Salles, F. F. col. (CZNC). One male imago and one female imago (both reared), Espírito Santo, Santa Teresa, Reserva Biológica Augusto Ruschi (19 ◦ 55 ′ 30.1 ′′ S; 40 ◦ 33 ′ 21.9 ′′ W), pool, sand, 26 / ii / 2009, Salles, F. F. col. (INPA). One female imago, Santa Catarina, Vargem Bonita (26 ◦ 53 ′ 48.27 ′′ S, 51 ◦ 42 ′ 12.24 ′′ W), 2005, Raimundi, E. col. (CZNC).	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF9A0877FE20D27CFF56F970.taxon	distribution	Distribution Brazil: Espírito Santo state, Santa Teresa county; Santa Catarina state, Vargem Bonita county.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF9C086FFD89D4EFFDD6FB71.taxon	description	(Figures 5 – 8) urn: lsid: zoobank. org: act: 863 C 8 C 1 D- 4175 - 42 E 3 - B 1 FC- 2 E 9004 B 26 F 8 B Known stages: I ♀ ♂, N	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF9C086FFD89D4EFFDD6FB71.taxon	diagnosis	Diagnosis Male imago. (1) Dorsal portion of turbinate eyes oval (Figure 5 A); (2) forewing hyaline with black bands transversally, medially with transverse band complete (Figure 5 D); (3) marginal intercalary veins paired, except between veins ICu 2 and A (Figure 5 D); (4) hind wing hyaline with brown marks basally, medially and apically (Figure 5 E, F); (5) costal process of hind wing compound (Figure 5 E, F); (6) abdominal sterna with many reddish spots, laterally with reddish brown spot, medially one brown mark and submedially with two light black marks; (7) forceps segment I cylindrical (Figure 5 C). Female imago. (1) Forewing completely dark brown, meeting of longitudinal veins with the posterior margin white (Figure 5 H); (2) marginal intercalary veins paired, except between veins ICu 2 and A (Figure 5 H); (3) hind wing completely dark brown with white veins (Figure 5 I, J); (4) costal process of hind wing compound (Figure 5 I, J); (5) abdominal sterna yellowish with brown spots; laterally with one black mark; submedially with brown mark on anterior margin (Figure 5 K); (6) abdominal sterna yellowish with brown spots; laterally with one black mark; submedially with brown mark on anterior margin (Figure 5 K). Mature nymph. (1) Antenna with spines and fine, simple setae on apex of each segment (Figure 6 A); (2) distal margin of labrum with deep medial emargination (Figure 6 B); (3) distal margin of labrum with long simple setae (Figure 6 B); (4) maxillary palp reaching apex of galea-lacinia (Figure 6 F); (5) glossa longer than paraglossa (Figure 6 G); (6) labial palp segment I with spine-like setae (Figure 6 G); (7) anterior surface of fore femur with robust spine-like setae near dorsal margin and with one row of robust trifid and bifid spine-like setae near ventral margin (Figure 7 B); (8) fore tarsus ventrally with one row of spine-like setae and trifid spine-like setae (Figure 7 C); (9) hind femur posterior surface near ventral margin with one row of robust, curved, pectinate setae (Figure 7 G); (10) hind claw similar with foreclaw (Figure 7 I); (11) gills VII with one fold (Figure 8 G); (12) cerci with spines on all segments (Figure 8 I); (13) terminal filament with spines on all segments (Figure 8 J).	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF9C086FFD89D4EFFDD6FB71.taxon	description	Description Male imago. Length: body, 4.8 mm; forewing, 4.2 mm; hind wing, 0.7 mm; antenna, 0.9 mm; tibia I, 1 mm; tibia II, 0.7 mm; tibia III, 0.7 mm. (n = 2) Head (Figure 5 A, B). Coloration brown. Turbinate portion of compound eyes dorsally reddish orange, stalk reddish orange with black base. Antenna. Scape and pedicel with apex brown, flagellum brown with white base. Dorsal portion of turbinate eyes oval; length 1.2 × width; stalk height 0.9 × dorsal portion height; inner margins parallel, not reaching each other. Thorax (Figure 5 A, B). Anteronotal protuberance, mesoscutum, submesoscutum, posterior scutal protuberance and scutellum black. Anteronotal and metascutellar protuberance rounded. Legs: Femur I with continuous longitudinal black line on external surface, tibia I white with black mark ventrally on apex, tarsus I and claws white; femur II with continuous longitudinal black line on internal surface; one light brown mark on apical half on internal surface, tibia II white with light marks on base and apex, tarsus II and claws white. Leg I: tibia 1.4 × length of femur; tarsus 1 × length of femur; and with four segments decreasing in length apically. Wings. Forewing (Figure 5 D) hyaline with black bands transversally, medially with transversal band complete; veins white and black; stigmatic area with five or six cross veins touching subcostal vein; marginal intercalary veins paired, except between veins ICu 2 and A; length of each intercalary vein 0.5 – 0.6 × distance between adjacent longitudinal veins; length of forewing about 2.7 × width. Hind wing (Figure 5 E, F) hyaline with brown mark basally, medially and apically; with seven to nine cross veins; costal process compound. Abdomen. Terga black, with red mark sublaterally like inverted “ V ” on terga II to VII; medially with two red maks on terga II and III; terga VIII, IX and X black with few black spots; tracheation black. Sterna with many reddish spots, laterally with reddish brown spot, medially with one brown mark and submedially with two light black marks. Caudal filaments lost. Genitalia (Figure 5 C). Forceps segment I with few reddish spots, II and III white. Forceps segment I cylindrical; 0.4 × length of segment II; distance between base of forceps 0.3 × distance between lateral margins of forceps. Forceps segment III oval, 3.3 × as long as wide; 0.2 × length of segment II. Posterior margin of styliger plate with small medial projection. Female imago. Length: body, 5.6 mm; forewing, 5.2 mm; hind wing, 0.8 mm; antenna, 0.6 mm; tibia, 0.8 mm. (n = 2) Head (Figure 5 G). Coloration light brown; compound eyes black. Antenna. Scape and pedicel white with brown apex, flagellum white. Thorax (Figure 5 G, K). Anteronotal protuberance and mesoscutum light brown; submesoscutum and posterior scutal protuberance yellowish light brown; scutellum light brown. Anteronotal protuberance rounded. Metascutellar protuberance pointed. Legs: Femur I white with trachea black pigmented on external surface, femora II and III white with trachea black pigmented on internal surface; tibia I white with brown mark ventrally on base and around apex, tibiae II and III white, with brown mark around apex; tarsi I, II, III and claws white. Leg I: tibia 1 × length of femur; tarsus 0.75 × length of femur. Leg II: tibia 0.7 × length of femur; tarsus 0.8 × length of femur. Leg III: tibia 0.7 × length of femur; tarsus 0.5 × length of femur. Wings. Forewing (Figure 5 H) completely dark brown, meeting of longitudinal veins with the posterior margin white; veins brown; stigmatic area with eight cross veins touching subcostal vein and two not; marginal intercalary veins paired, except between veins ICu 2 and A; length of each intercalary vein 0.5 – 0.6 × distance between adjacent longitudinal veins; length of forewing about 2.3 × width. Hind wing (Figure 5 I, J) completely dark brown with white veins; three complete longitudinal veins and 12 – 16 cross veins; costal process compound. Abdomen (Figure 5 G, K). Terga yellowish brown with brown spots on VI to VIII; medially with red mark; laterally with brown mark; terga VII to IX with submedially brown mark. Tracheation black. Sterna yellowish with brown spots; laterally with one black mark; submedially with brown mark on anterior margin. Pleura with red mark. Caudal filaments lost. Mature nymph. Length: body, 6 mm; terminal filament, 2.6 mm; antenna, 3.7 mm. (n = 2) Head. Coloration: light brown. Antenna light brown (Figure 6 A) with spines and fine, simple setae on apex of each segment. Labrum (Figure 6 B). Excavate medially; length about 0.6 × maximum width; distal margin with deep medial emargination; anterolateral and distal margin with long and simple setae; dorsally with many, long, fine, simple setae scattered over anterolateral surface; submarginal row of setae absent; ventrally with short spine-like setae near lateral margin and one row of simple spine-like setae near anterolateral and distal margin. Right mandible (Figure 6 C) with 4 + 3 denticles; prostheca slender and bifurcated, inner lobe short than outer; margin between prostheca and mola convex, with short projection and tuft of setae present; tuft of spine-like setae at base of mola present. Denticles of mola not constricted. Tuft of setae at apex of mola present; lateral margins slightly convex; basal half bare dorsally. Left mandible (Figure 6 D) with 4 + 3 denticles; prostheca robust and bifid; margin between prostheca and mola concave; tuft of spine-like setae at base of mola present; subtriangular process narrow, at same level as area between prostheca and mola; denticles of mola not constricted; tuft of setae at apex of mola present; lateral margins slightly convex; basal half bare dorsally. Hypopharynx (Figure 6 E). Superlingua not expanded; short, fine, simple setae scattered over distal margin of lingua and superlingua. Maxilla (Figure 6 F). Double row of setae with three simple denti-setae. Medial protuberance of galea with 1 + 6 spine-like setae. Maxillary palp reaching apex of galea-lacinia; palp segment II 0.6 × length of segment I; outer margin of segment I scattered with robust and pointed setae, apex of inner margin with seven or eight pointed setae, dorsal and ventral surface with pores; segment II with short pointed setae in inner margin, outer margin with long, fine and simple setae. Labium (Figure 6 G, H). Glossa basally narrow and longer than paraglossa; inner margin with 14 spine-like setae; apex with three to five spine-like setae; outer margin with many spine-like setae. Ventral surface scattered with few long, fine and simple setae. Paraglossa curved inward; apex with three to five robust and simple setae. Ventrally with few long, fine and simple setae. Labial palp with segment I 1 × length of segments II and III combined; segment I dorsally covered with micropores, near outer margin with robust spine-like setae; ventrally, near inner margin with robust spine-like setae, covered with fine, simple and long setae; segment II without distomedial protuberance; inner and outer margin respectively with eight or nine short spine-like setae and few long, fine and simple setae; dorsally with row of six or seven short spine-like setae; segment III concave; length 1.7 × width; covered with spine-like simple setae along margins and fine, simple setae, scattered over outer surface. Thorax. Light brown. Foreleg (Figure 7 A – D) light brown. Ratio of foreleg 1.4: (0.6 mm): 0.7: 0.4. Fore femur. Length about 5.3 × maximum width; dorsally with row of short spine-like setae; apex with two robust spine-like setae; length of setae about 0.1 × maximum width of femur; ventrally with few long, fine simple setae. Anterior surface with robust spine-like setae near dorsal margin and one row of trifid and bifid spine-like setae near ventral margin. Tibia. Dorsally bare; ventrally with one row of short, spine-like setae. Anterior surface with few short, robust spine-like setae. Tarsus. Dorsally bare; ventrally with one row of spine-like setae and trifid spine-like setae. Tarsal claw with two rows of denticles increasing in size distally. Hind leg (Figure 7 E – I). Femur with one row of short spine-like setae dorsally and ventrally. Anterior surface with many robust setae near ventral and dorsal margin; posterior surface near ventral margin with one row of robust, curved, pectinate setae. Tibia ventrally with row of spine-like setae. Tarsus, ventrally with one row of spine-like setae, anterior surface with one row of robust bipectinate setae. Abdomen (Figure 8 A). Like imago female. Terga. Posterior margin with regular spines, 3 × as long as wide (Figure 8 B). Sterna. Surface bare. Gills (Figure 8 C – G). Trachea black pigmented, extending from main trunk to outer margin. Gill I subequal in length to segment II, with three folds. Gill IV subequal in length to segment V, with two folds. Gill VII as long as length of segments VIII to half IX combined, with one fold. Paraproct (Figure 8 H) with 23 – 25 marginal spines; surface with micropores and short, fine, simple setae; posterolateral extension with minute marginal spines. Terminal filament (Figure 8 J) light brown, with base of segments brown; posterior margin of segments with spines on each segment. Cerci (Figure 8 I) with spines on all segments.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF9C086FFD89D4EFFDD6FB71.taxon	etymology	Etymology The specific epithet is a reference to the abdominal colour pattern (cruentus, from Latin, meaning “ spotted by blood ”).	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF9C086FFD89D4EFFDD6FB71.taxon	materials_examined	Material examined Holotype. Female imago with corresponding nymphal exuviae, BRAZIL, Amazonas, Iranduba, Janauari Lake (03 ◦ 11 ′ 11.5 ′′ S, 60 ◦ 05 ′ 05.6 ′′ W), 11 / vii / 2008, P. V. Cruz col. (INPA). Paratypes. 19 nymphs and three female imagos reared (with corresponding nymphal exuviae), BRAZIL, Amazonas, Iranduba, Janauari Lake (03 ◦ 11 ′ 11.5 ′′ S, 060 ◦ 05 ′ 05.6 ′′ W), 11 / vii / 2008, P. V. Cruz col. (INPA, CZNC). Two female imagos reared and five nymphs, BRAZIL, Amazonas, Iranduba, Janauari Lake (03 ◦ 11 ′ 11.5 ′′ S, 060 ◦ 05 ′ 05.6 ′′ W), 11 / vii / 2008, P. V. Cruz col. (INPA, CZNC). Two female imagos and two male imagos reared, BRAZIL, Amazonas, Iranduba, Janauari Lake (03 ◦ 11 ′ 11.5 ′′ S, 060 ◦ 05 ′ 05.6 ′′ W), 26 / viii / 2008, P. V. Cruz col. (INPA, CZNC).	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF9C086FFD89D4EFFDD6FB71.taxon	distribution	Distribution Brazil: Amazonas state, Iranduba county.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF85086DFE44D0A9FDE6FD6B.taxon	description	(Figure 9)	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF85086DFE44D0A9FDE6FD6B.taxon	diagnosis	Diagnosis Male imago. (1) Dorsal portion of turbinate eyes oval (Figure 9 A); (2) forewing with three or four transverse pigmented bands (Figure 9 C); (3) marginal intercalary veins paired (Figure 9 C); (4) hind wing with many cross veins and three complete longitudinal veins (Figure 9 D, E); (5) hind wing with small pointed costal projection (Figure 9 D, E); (6) forceps segment I wide at base (Figure 9 F); (7) abdominal sterna surface with two pair of medial brown marks (Figure 9 G). Female imago. (1) Forewing with three or four transverse bands of pigmentation (fig. 12 in Gillies 1990); (2) marginal intercalary veins paired (fig. 12 in Gillies 1990); (3) hind wing with many cross veins (fig. 13 in Gillies 1990); (4) abdominal sterna I to IX with two pairs of median black marks.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF85086DFE44D0A9FDE6FD6B.taxon	discussion	Comments The adults of C. fasciatus and C. sellacki are similar, although those of C. fasciatus have forewing with three or four transverse bands (Figure 9 C) and those of C. sellacki have only two (Figure 27 G).	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF85086DFE44D0A9FDE6FD6B.taxon	materials_examined	Material examined Three male imagos, BRAZIL, Rio Grande do Sul, Derrubadas, (27 ◦ 15 ′ 58.76 ′′ S, 53 ◦ 51 ′ 50.62 ′′ W), dam, 25 / x / 2008, E. Raimundi col. (INPA). Male imago, BRAZIL, Paraná, Rio Branco do Sul, (25 ◦ 11 ′ 42.20 ′′ S, 49 ◦ 18 ′ 50.44 ′′ W), Gruta de Lancinha, 31 / v / 1987 (DZRJ).	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF85086DFE44D0A9FDE6FD6B.taxon	distribution	Distribution Argentina, Chile, Uruguay and Brazil: Rio Grande do Sul state, Derrubadas county; Paraná state, Rio Branco do Sul county.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF87086CFEF1D6AEFCA4FBB0.taxon	diagnosis	Diagnosis Male imago. (1) Dorsal portion of turbinate eyes oval (fig. 1 in Cruz et al. 2009); (2) forewing hyaline, except for brownish stigmatic area and small brownish marks along costal vein (fig. 3 in Cruz et al. 2009); (3) marginal intercalary veins paired, except between veins MP and A (fig. 3 in Cruz et al. 2009); (4) hind wing hyaline with five cross veins (fig. 4 b in Cruz et al. 2009); (5) costal process of hind wing compound (fig. 4 b in Cruz et al. 2009); (6) abdominal sterna with black mark anterolaterally; (7) forceps segment I wide at base and with small distomedial projection (fig. 31 in Cruz et al. 2009). Female imago. (1) Forewing hyaline, except C, Sc, R 1 and area around bulla brown coloured (fig. 7 in Cruz et al. 2009); (2) marginal intercalary veins paired, except between veins CuA and A (fig. 7 in Cruz et al. 2009); (3) hind wing hyaline, except brown mark at base toward costal process, with six cross veins (fig. 8 b in Cruz et al. 2009); (4) costal process of hind wing compound (fig. 8 b in Cruz et al. 2009); (5) abdominal sterna white with many red spots (fig. 9 in Cruz et al. 2009); (6) abdominal terga dark brown with red spots medially (fig. 32 in Cruz et al. 2009). Mature nymph. (1) Antenna with fine, simple setae on apex of each segment (fig. 10 in Cruz et al. 2009); (2) distal margin of labrum with subquadrangular small emargination (fig. 11 a in Cruz et al. 2009); (3) lateral and anterolateral margin of labrum with long, fine, simple setae; (4) maxillary palp reaching apex of galea-lacinia (fig. 15 in Cruz et al. 2009); (5) glossa subequal in length to paraglossa (fig. 16 a in Cruz et al. 2009); (6) labial palp with inner and outer margin with many robust, simple setae and many long, fine, simple setae (fig. 16 a in Cruz et al. 2009); (7) anterior surface of forefemur with robust trifid and bifid spine-like setae near ventral margin (fig. 17 b in Cruz et al. 2009); (8) fore tarsus dorsally with one or two short, robust, spine-like setae; ventrally two rows of long spine-like setae and one row of trifid spine-like setae (fig. 17 a in Cruz et al. 2009); (9) anterior surface of hind femur with many robust, curved, pectinate setae near ventral and dorsal margin (fig. 18 b, c in Cruz et al. 2009; (10) hind claw similar to foreclaw; (11) gill VII as long as length of segments VIII to IX, with two folds (fig. 23 in Cruz et al. 2009); (12) cerci with posterior margin of segments with short spines on each segment, and long spines on every three segments (fig. 25 in Cruz et al. 2009); (13) terminal filament similar to cerci (fig. 26 in Cruz et al. 2009).	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF87086CFEF1D6AEFCA4FBB0.taxon	materials_examined	Material examined Female imago with corresponding nymphal exuviae, BRAZIL, Rio de Janeiro, Nova Friburgo, Lumiar (22 ◦ 23 ′ 27.2 ′′ S, 42 ◦ 20 ′ 03,6 ′′ W), third order tributary of the Rio Bonito, pool, V / 2008, Souza, M. R. col. (INPA). Ten nymphs, two male imagos same data, both reared (five nymphs and one male imago in INPA, others in DZRJ).	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF87086CFEF1D6AEFCA4FBB0.taxon	discussion	Comments The male imagos of C. zonalis only have as useful diagnostic characteristic the alar pigmentation, which has large variation, matching with alar pigmentation of C. fluminensis male imago. This shared characteristic prevents the differentiation of these species at this stage.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF87086CFEF1D6AEFCA4FBB0.taxon	distribution	Distribution Brazil: Rio de Janeiro state, Nova Friburgo county.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF860861FDB2D0EAFC42F940.taxon	description	(Figure 10) urn: lsid: zoobank. org: act: 6547 C 53 C-E 014 - 4674 - B 26 D- 9 B 105 EFC 611 A Known stages: I ♀ ♂, N	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF860861FDB2D0EAFC42F940.taxon	diagnosis	Diagnosis Male imago. (1) Dorsal portion of turbinate eyes circular, apical third with constriction, base is wider than apex in lateral view (Figure 10 A); (2) forewing hyaline, except C, Sc, R 1 areas (Figure 10 D); (3) marginal intercalary veins paired, except between veins MP and A (Figure 10 D); (4) hind wing hyaline, sometimes with one brown mark near costal process (Figure 10 E, F); (5) hind wing with costal process compound (Figure 10 E, F); (6) abdominal sterna with one brown mark submedially; (7) forceps segment I cylindrical (Figure 10 C). Female imago. (1) Forewing hyaline, except C, Sc, R 1 and area around bulla brown coloured (Figure 10 H); (2) marginal intercalary veins single (Figure 10 H); (3) hind wing hyaline sometimes with one brown mark near costal process (Figure 10 I, J); (4) costal process of hind wing compound (Figure 10 I, J); (5) posterior margin of abdominal sterna with one brown mark medially; hyaline after oviposition (Figure 10 K); (6) abdominal terga white, sometimes light brown with anterior margin with one brown mark medially; hyaline after oviposition (Figure 10 G). Mature nymph. As in C. nigracyclus sp. nov.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF860861FDB2D0EAFC42F940.taxon	description	Description Male imago. Length: body, 4.8 mm; cercus, 6.8 mm; forewing, 4.6 mm; hind wing, 0.4 mm; antenna, 0.9 mm; tibia I, 1 mm; tibia II, 0.9 mm; tibia III, 0.7 mm. (n = 2) Head (Figure 10 A, B). Coloration light brown. Turbinate portion of compound eyes dorsally light brown, stalk larger than apex, apical third narrow. Antenna. Scape and pedicel with apex brown, flagellum brown with white base, longer than turbinate eyes. Dorsal portion of turbinate eyes circular; length 1 × width; stalk height 9 × dorsal portion height; base is wider than apex in lateral view; apical third with constriction; inner margins parallel, not reaching each other. Thorax (Figure 10 A, B). Anteronotal protuberance medially light brown, submedially brown, laterally light brown; mesoscutum, submesoscutum, posterior scutal protuberance and scutellum brown. Anteronotal and metascutellar protuberance rounded. Legs: Femora I, II and III with discontinuous longitudinal black marks on external surface; tibiae I, II and III light brown with brown mark on apex; tarsi I, II, III and claws light brown. Leg I: tibia 0.8 × length of femur; tarsus 0.6 × length of femur. Leg III: tibia 1.3 × length of femur; tarsus 0.7 × length of femur. Wings. Forewing (Figure 10 D) hyaline, except C, Sc, R 1 areas; veins light brown; stigmatic area with five to seven cross veins touching subcostal vein; marginal intercalary veins paired, except between veins MP and A; length of each intercalary vein 0.3 – 0.8 × distance between adjacent longitudinal vein; length of forewing about 3.2 × width. Hind wing (Figure 10 E, F) hyaline, sometimes with one brown mark near costal process, with one incomplete and two complete longitudinal veins, without cross veins; costal process compound. Abdomen. Terga brown or light brown; tracheation black. Sterna light brown or brown, with one brown mark submedially. Caudal filaments white with brown mark on apex and base of each segment. Genitalia (Figure 10 C). Forceps brown. Forceps segment I cylindrical; 0.3 × length of segment II; distance between base of forceps 0.4 × distance between lateral margins of forceps. Forceps segment III oval, 5 × as long as wide; 0.2 × length of segment II. Posterior margin of styliger plate without medial projection. Female imago. Length: body, 6 mm; cercus, 8.6 mm; forewing, 5.5 mm; hind wing, 0.6 mm; antenna, 0.8 mm; tibia I, 0.9 mm; tibia II, 1.1 mm; tibia III, 1 mm. (n = 2). Head (Figure 10 G). Coloration white, sometimes yellowish light brown; compound eyes black with longitudinal brown line. Antenna. Scape and pedicel with brown apex, flagellum light brown with base white. Thorax (Figure 10 G, K). Anteronotal protuberance, mesoscutum, submesoscutum, posterior scutal protuberance and scutellum white (sometimes all thorax light brown). Anteronotal and metascutellar protuberance rounded. Legs: Femora I, II and III light brown with discontinuous longitudinal pigmented line on external surface; tibiae I, II and III light brown with brown mark ventrally on base and brown around apex; tarsi I, II and III light brown; claws light brown. Leg I: tibia 1.2 × length of femur; tarsus 0.8 × length of femur. Leg II: tibia 1 × length of femur; tarsus 0.4 × length of femur. Leg III: tibia 0.9 × length of femur; tarsus 0.3 × length of femur. Wings. Forewing (Figure 10 H) hyaline, except C, Sc, R 1 and area around bulla brown coloured; veins brown; stigmatic area with four to six cross veins touching subcostal vein; marginal intercalary veins single; length of each intercalary vein 0.4 – 0.8 × distance between adjacent longitudinal veins; length of forewing about 2.7 × width. Hind wing (Figure 10 I, J) hyaline, sometimes with one brown mark near costal process; one longitudinal incomplete vein, not reaching apex of hind wing and two longitudinal complete veins; one or two cross veins; costal process compound. Abdomen (Figure 10 G, K). Terga white, sometimes light brown with anterior margin with one brown mark medially; hyaline after oviposition. Tracheation black. Sterna white, sometimes light brown, posterior margin with one brown mark medially; hyaline after oviposition. Caudal filaments white with base and apex of segments dark brown.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF860861FDB2D0EAFC42F940.taxon	etymology	Etymology The specific epithet is a reference to the abdominal colour, white like ice (gelidus, from Latin, meaning “ frosty ”).	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF860861FDB2D0EAFC42F940.taxon	discussion	Comments The nymphs of C. gelidus sp. nov. and C. nigracyclus sp. nov. cannot be distinguished.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF860861FDB2D0EAFC42F940.taxon	materials_examined	Material examined Holotype. Female imago, BRAZIL, Rondônia, Porto Velho, Igarapé Mamãe Quinó (8 ◦ 49 ′ 36.33 ′′ S, 63 ◦ 56 ′ 4.28 ′′ W), 12 / v / 2006, P. V. Cruz col. (INPA). Paratype. Four female imagos, Igarapé Mamãe Quinó (8 ◦ 49 ′ 36.33 ′′ S, 63 ◦ 56 ′ 4.28 ′′ W), 12 / v / 2006, P. V. Cruz col. (INPA, CZNC). Female imago, five female subimagos, two nymphs, two exuviae, male imago, male subimago, Reserva Kaiari (8 ◦ 51 ′ 7.38 ′′ S, 63 ◦ 57 ′ 33.72 ′′ W), 7 / iv / 2007, P. V. Cruz col. (INPA, CZNC). Nymph, Reserva Kaiari (8 ◦ 51 ′ 7.38 ′′ S, 63 ◦ 57 ′ 33.72 ′′ W), 15 / iv / 2007, P. V. Cruz col. (INPA). Three nymphs, three female imagos, 20 exuviae, eight female subimagos, 11 male subimagos, Reserva Kaiari (8 ◦ 51 ′ 7.38 ′′ S, 63 ◦ 57 ′ 33.72 ′′ W), 26 / v / 2007, P. V. Cruz col. (INPA, CZNC). Three female imagos, BRAZIL, Amazonas Manaus, Lake of Reserva ZF 2 (02 ◦ 38 ′ 10.0 ′′ S, 60 ◦ 09 ′ 11.3 ′′ W), 14 / viii / 2008, illuminated sheet, P. V. Cruz col. (INPA).	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF860861FDB2D0EAFC42F940.taxon	distribution	Distribution Brazil: Rondônia state, Porto Velho county; Amazonas state, Manaus county.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF8A0866FD82D4EFFD0FFA39.taxon	description	(Figure 11)	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF8A0866FD82D4EFFD0FFA39.taxon	diagnosis	Diagnosis Male imago. (1) Dorsal portion of turbinate eyes oval (Figure 11 A); (2) forewing hyaline (Figure 11 E); (3) marginal intercalary veins single (Figure 11 E); (4) hind wing hyaline; (5) costal process of hind wing rounded (Figure 11 F); (6) abdominal sterna white, with anterolateral brown mark in each segment; (7) forceps segment I wide at base (Figure 11 C). Female imago. (1) Forewing with yellowish green pigmentation at C, Sc, R 1 areas and wing base (Figure 11 H) (only yellowish in alcohol); (2) marginal intercalary veins single (Figure 11 H); (3) hind wing with 13 – 15 cross veins, basal half yellowish green (Figure 11 I) (yellowish brown in alcohol) (Figure 11 J, K); (4) hind wing with costal process rounded (Figure 11 J); (5) abdominal sterna with one dark mark anterolaterally (Figure 11 L); (6) abdominal terga green (yellowish brown in alcohol). Mature nymph. (1) Antenna with spines; (2) anterior margin of labrum medially with subquadrangular small emargination (fig. 4 in Nieto 2008), setae of distal margin of labrum long and pointed; (3) maxillary palp scarcely longer than galea-lacinia (fig. 8 in Nieto 2008); (4) glossa subequal than paraglossa; (5) forefemur ventrally with trifid setae (fig. 10 in Nieto 2008) (6) foretarsus ventrally with trifid setae; (7) hind femur with curved and pectinate setae near ventral margin; (8) cerci with spines in all segments (fig. 15 in Nieto 2008); (9) terminal filament with spines in all segments.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF8A0866FD82D4EFFD0FFA39.taxon	description	Description Male imago. Length: body, 4.8 mm; forewing, 5.6 mm; hind wing, 4.8 mm; antenna, 1 mm; tibia I, 1.3 mm; tibia II, 1 mm; tibia III, 1 mm; (n = 1). Head (Figure 11 A, B). Coloration light orange. Turbinate portion of compound eyes orange. Antenna white. Dorsal portion of turbinate eyes oval; length 1.5 × width; stalk height 0.5 × dorsal portion height; inner margins parallel, not reaching each other. Thorax (Figure 11 A, B). Anteronotal protuberance, mesoscutum, submesoscutum, posterior scutal protuberance and scutellum white. Anteronotal protuberance rounded. Metascutellar protuberance pointed. Legs: White. Leg I: tibia 1.1 × length of femur; tarsus 1.2 × length of femur. Leg II and III: tibia 0.6 × length of femur; tarsi 0.3 × length of femur. Wings. Forewing hyaline (Figure 11 E), C and Sc areas opaque; veins white; stigmatic area with three to four cross veins touching subcostal vein and three to four veins not touching subcostal vein; marginal intercalary veins single, except between veins R 1 and R 2; length of each intercalary vein 0.3 – 0.7 × distance between adjacent longitudinal vein; length of forewing about 2.6 × width. Hind wing hyaline (Figure 11 F); with seven to nine cross veins, one marginal intercalary vein; costal process rounded. Abdomen. Terga white; tracheation black. Sterna white, with anterolateral brown mark in each segment. Caudal filaments white. Genitalia (Figure 11 C). Forceps white, segment I wide at base; 0.3 × length of segment II; distance between base of forceps 0.2 × distance between lateral margins of forceps. Forceps segment III apically truncate, 1.8 × as long as wide; 0.1 × length of segment II. Posterior margin of subgenital plate with small rounded projection.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF8A0866FD82D4EFFD0FFA39.taxon	discussion	Comments The nymphs of C. gonzalezi and C. cruentus sp. nov. are similar, they can be distinguished by differences in the distal margin of labrum, which in C. gonzalezi is straight (fig. 4 in Nieto 2008) and in C. cruentus sp. nov. it is rounded (Figure 6 B); the segments of maxillary palp in C. gonzalezi are subequal (fig. 8 in Nieto 2008) whereas in C. cruentus sp. nov. the second segment is shorter (0.6 ×) than the first (Figure 6 F); abdominal segments V, VII and VIII with two parallel pale bands in C. gonzalezi (fig. 3 in Nieto 2008) whereas in C. cruentus sp. nov. these pale bands are absent (Figure 8 A). The female natural colour is green (Figure 11 D), after fixation the body colour changed to yellowish.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF8A0866FD82D4EFFD0FFA39.taxon	materials_examined	Material examined Nine nymphs, BRAZIL, Rondônia, Porto Velho, Igarapé da Penal (8 ◦ 43 ′ 22.10 ′′ S, 63 ◦ 51 ′ 12.45 ′′ W), 21 / vii / 2006, P. V. Cruz col. (INPA, CZNC). Two female imagos, BRAZIL, Rondônia, Porto Velho, Igarapé da Penal (8 ◦ 43 ′ 22.10 ′′ S, 63 ◦ 51 ′ 12.45 ′′ W), 23 / ii / 2007, P. V. Cruz col. (INPA, UNIR). Female imago, BRAZIL, Rondônia, Porto Velho, Rio Madeira (8 ◦ 45 ′ 42.61 ′′ S, 63 ◦ 54 ′ 07.10 ′′ W), 14 / iv / 2007, P. V. Cruz col. (INPA). Female imago, BRAZIL, Bahia, Jequié (13 ◦ 51 ′ 3.76 ′′ S, 40 ◦ 4 ′ 52.22 ′′ W), 22 / i / 2005, L. R. C. Lima col. (INPA). 39 nymphs, female imago (reared), three female imagos, male imago, BRAZIL, Amazonas, Manaus, Catalão Lake (3 ◦ 06 ′ 54.73 ′′ S, 59 ◦ 54 ′ 33.85 ′′ W), macrophyte, 07 / vii / 2008, P. V. Cruz col. (INPA). 42 nymphs, BRAZIL, Amazonas, Manaus, Catalão Lake (3 ◦ 06 ′ 54.73 ′′ S, 59 ◦ 54 ′ 33.85 ′′ W), macrophyte, 10 / vii / 2008, P. V. Cruz col. (INPA). Female imago (reared), male subimago (reared), male imago (reared), 29 nymphs, two female imagos (reared), male imago (reared), BRAZIL, Amazonas, Manaus, Catalão Lake (3 ◦ 06 ′ 54.73 ′′ S, 59 ◦ 54 ′ 33.85 ′′ W), macrophyte, 11 / vii / 2008, P. V. Cruz col. (INPA). Female imago, BRAZIL, Amazonas, Manaus, Rio Negro (3 ◦ 06 ′ 54.73 ′′ S, 59 ◦ 54 ′ 33.85 ′′ W), 20 / viii / 2008, P. V. Cruz col. (INPA).	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF8A0866FD82D4EFFD0FFA39.taxon	distribution	Distribution Argentina, Paraguay and Brazil: Rondônia state, Porto Velho county; Amazonas state, Manaus county; Bahia state, Jequié county.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF8C0865FD8CD240FDE0FCFA.taxon	diagnosis	Diagnosis Male imago. (1) Forewing hyaline; (2) hind wing with pointed costal process (fig. 16 in Navás 1930 a); (3) abdominal terga with two longitudinal marks.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF8C0865FD8CD240FDE0FCFA.taxon	discussion	Comments In the original description only the hind wing is illustrated. The type series was at the Zoological Museum of Berlin, and one specimen, in poor condition, is deposited in the Zoological Museum of Barcelona (Gillies 1990). Gillies (1990) examined the specimen from Barcelona and reported that it would be necessary to examine more specimens to clarify the status of this taxon.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF8C0865FD8CD240FDE0FCFA.taxon	materials_examined	Material examined No types or specimens were examined; diagnosis was based on the literature.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF8C0865FD8CD240FDE0FCFA.taxon	distribution	Distribution Brazil: São Paulo state, Ipiranga county.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF8F085BFE4DD710FE53FC3C.taxon	description	(Figure 12)	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF8F085BFE4DD710FE53FC3C.taxon	diagnosis	Diagnosis Male imago. (1) Forewing hyaline or with sparse pigmentation (figs. 16, 20 in Nieto 2008); (2) marginal intercalary veins paired (fig. 16 in Nieto 2008); (3) hind wing hyaline, sometimes with pigmentation (figs. 17 a, 21 a in Nieto 2008); (4) costal process of hind wing pointed or compound (fig. 21 a in Nieto 2008); (5) abdominal terga III, V and VII dorsally with two submedially oblique marks; (6) segment I of forceps wide at base (fig. 22 in Nieto 2008). Female imago. (1) Forewing with five to six pigmented bands, sometimes with black marks near posterior margin (Figure 12 B); (2) marginal intercalary veins paired (Figure 12 B); (3) hind wing with pigmented basal half, sometimes with medial pigmentation (Figure 12 C); (4) costal process of hind wing pointed or compound (Figure 12 C); (5) abdominal sterna with anterolateral mark (Figure 12 D); (6) abdominal terga III, V and VII dorsally with two submedially oblique marks (Figure 12 A). Mature nymph. (1) Anterior margin of labrum medially with small emargination (fig. 25 a in Nieto 2008); (2) anterior margin of labrum with simple and bipectinate setae (fig. 25 b in Nieto 2008); (3) maxillary palp subequal or shorter in length than galea-lacinia (fig. 29 in Nieto 2008); (4) glossa subequal in length than paraglossa; (5) forefemur with row of trifid spine-like setae (fig. 31 in Nieto 2008); (6) cerci with spines on every one segment (fig. 36 in Nieto 2008).	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF8F085BFE4DD710FE53FC3C.taxon	discussion	Comments Da-Silva (1991), after analysing several specimens from the state of Rio de Janeiro, described their nymphs for the first time, and redescribed the females, although the specimens examined in this paper did not fit exactly the original description of C. guttatus, especially regarding the forewing colour pattern. According to Da-Silva (1991) this was due to an intra-specific variation. Nieto (2008) also described two pigmentation variations of C. guttatus, one of which is in accordance with Da-Silva (1991). However, when analysing specimens collected in the states of Rio de Janeiro, Espírito Santo and Ceará, we found no variation in the wings or body pigmentation. A detailed investigation of the body pigmentation pattern, together with the nymph morphology of all specimens classified as C. guttatus, will help to establish the diagnostic characters of this species and, perhaps, help to reveal species that are new to science. The natural colour of the female is green, after fixation the body colour changed to yellowish, and in some females to reddish.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF8F085BFE4DD710FE53FC3C.taxon	materials_examined	Material examined Female imago, BRAZIL, Ceará, São Gonçalo do Amarante (3 ◦ 36 ′ 21.67 ′′ S, 38 ◦ 58 ′ 12.33 ′′ W), 14 / iv / 2008, Ferreira, N. col. (DZRJ). Female imago (with exuviae), BRAZIL, Espírito Santo, Pinheiros, 02 / x / 2007, Rebio Córrego do Veado (18 ◦ 43 ′ 0.16 ′′ S, 39 ◦ 51 ′ 33.80 ′′ W), Salles, F. F. col. (CZNC). Female imago (with exuviae), BRAZIL, Espírito Santo, Águia Branca (18 ◦ 58 ′ 43.20 ′′ S, 40 ◦ 44 ′ 19.16 ′′ W), 11 / ix / 2009, Cruz, P. V., Salles, F. F. col. (CZNC). Female imago (with exuviae), BRAZIL, Espírito Santo, São Mateus (18 ◦ 43 ′ 0.16 ′′ S, 39 ◦ 51 ′ 33.80 ′′ W), 09 / ix / 2009, Campus Litorâneo Lake of UFES, Cruz, P. V. col. (CZNC). Two female imagos, BRAZIL, Rio de Janeiro, Silva Jardim (22 ◦ 39 ′ 34.25 ′′ S, 42 ◦ 22 ′ 56.76 ′′ W), 16 / x / 1976, Santos, N. D. col. (DZRJ). Female imago, BRAZIL, Rio de Janeiro, Marica (22 ◦ 55 ′ 8.73 ′′ S, 42 ◦ 49 ′ 5.83 ′′ W), 03 / vi / 1989, (DZRJ). Female imago, BRAZIL, Rio de Janeiro, Marica (22 ◦ 55 ′ 8.73 ′′ S, 42 ◦ 49 ′ 5.83 ′′ W), Restinga, 03 / vi / 1988, Nessimian, J. L. col. (DZRJ).	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FF8F085BFE4DD710FE53FC3C.taxon	distribution	Distribution Argentina, Brazil: Rio de Janeiro state, Silva Jardim county and Marica county; Espírito Santo state, São Mateus county and Águia Branca county; Ceará state, São Gonçalo do Amarante county.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFB10853FE4BD045FDCCFD2E.taxon	description	(Figures 13 – 16) urn: lsid: zoobank. org: act: 65 FF 651 B-BB 9 B- 4 A 83 - 8 C 0 B- 53960 C 0 D 522 F Known stages: I ♀ ♂, N	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFB10853FE4BD045FDCCFD2E.taxon	diagnosis	Diagnosis Male imago. (1) Dorsal portion of turbinate eyes oval (Figure 13 A); (2) forewing hyaline (Figure 13 D); (3) marginal intercalary veins paired, except between MP and A veins (Figure 13 D); (4) hind wing without cross veins (Figure 13 E); (5) costal process of hind wing compound (Figure 13 E); (6) abdominal sterna with light brown mark medially on posterior margin of all segments; (7) forceps segment I wide at base (Figure 13 C). Female imago. (1) Forewing hyaline (Figure 13 G); (2) marginal intercalary veins paired, except between R 3 and A (Figure 13 G); (3) hind wing hyaline without cross veins (Figure 13 H); (4) costal process of hind wing compound (Figure 13 H); (5) abdominal sterna with light brown mark medially on posterior margin of all segments (Figure 13 I); (6) abdominal terga light brown with posterior margin of all segments with brown mark submedially (Figure 13 F). Mature nymph. (1) Antenna with spines and fine, simple setae on apex of each segment (Figure 14 A); (2) distal margin of labrum with deep medial emargination (Figure 14 B); (3) margin of labrum with long, fine, simple setae laterally and anterolaterally; medially with short, robust pectinate setae (Figure 14 B, C); (4) maxillary palp reaching apex of galea-lacinia (Figure 14 G); (5) glossa subequal in length to paraglossa (Figure 14 H); (6) labial palp segment I with spine-like setae (Figure 14 H); (7) anterior surface of fore femur with robust trifid and bifid spine-like setae near ventral margin (Figure 15 B); (8) foretarsus ventrally with one row of spine-like setae and trifid spine-like setae (Figure 15 C); (9) hind femur anterior surface with many robust setae near ventral and dorsal margin (Figure 15 E); (10) hind claw similar to foreclaw (Figure 15 G); (11) gill VII with one fold (Figure 16 E); (12) cerci with spines on all segments (Figure 16 H); (13) terminal filament with short spines on every one segments (Figure 16 I).	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFB10853FE4BD045FDCCFD2E.taxon	description	Description Male imago. Length: body, 4.8 mm; cercus, 6.24 mm; forewing, 7 mm; hind wing, 0.72 mm; antenna, 0.5 mm; tibia I, 0.9 mm; tibia II, 0.6 mm; tibia III, 0.4 mm. (n = 2) Head (Figure 13 A, B). Coloration brown. Turbinate portion of compound eyes dorsally and stalk light brown. Antenna with apex of scape, pedicel and flagellum brownish. Dorsal portion of turbinate eyes oval; length 1.3 × width; stalk height 0.25 × dorsal portion height; inner margins parallel, not reaching each other. Thorax (Figure 13 A, B). Anteronotal protuberance and mesoscutum dark brown; submesoscutum and posterior scutal protuberance dark brown; scutellum whitish brown. Anteronotal protuberance rounded. Metascutellar protuberance pointed. Legs: Femur I with trachea black pigmented, tibia I white without brown marks, tarsus I white, claws brown; femora II and III with trachea black pigmented, tibiae II and III white without brown marks, tarsi II and III white, claws brown. Leg I: tibia 1 × length of femur; tarsus 1.3 × length of femur. Leg III: tibia 0.5 × length of femur; tarsus 0.45 × length of femur. Wings. Forewing (Figure 13 D) hyaline, apical half of C vein opaque; veins white; stigmatic area with three or four cross veins touching subcostal vein and three or four veins not touching; marginal intercalary veins paired, except between veins MP and A; length of each intercalary vein 0.5 – 0.8 × distance between adjacent longitudinal veins; length of forewing about 2.7 × width. Hind wing (Figure 13 E) hyaline; with one incomplete and two complete longitudinal veins, without cross veins; costal process compound. Abdomen. Terga I to VI white, VII to IX yellowish; tracheation black. Sterna I to VI white, VII to IX yellowish, posterior margin with light brown mark medially. Caudal filaments white. Genitalia (Figure 13 C). Forceps white. Forceps segment I wide at base; 0.7 × length of segment II; distance between base of forceps 0.3 × distance between lateral margins of forceps. Forceps segment III oval, 4 × as long as wide; 0.3 × length of segment II. Posterior margin of styliger plate with small medial projection. Female imago. Length: body, 5.7 mm; cercus, 7.5 mm; forewing, 5.2 mm; hind wing, 1.2 mm; antenna, 0.3 mm; tibia I, 0.6 mm; tibia II, 0.9 mm; tibia III, 0.9 mm. (n = 2). Head (Figure 13 F). Coloration light brown; compound eyes black. Antenna with scape, pedicel and flagellum brown. Thorax (Figure 13 F, I). Anteronotal protuberance, mesoscutum, submesescutum, posterior scutal protuberance and scutellum light brown. Anteronotal protuberance rounded. Metascutellar protuberance pointed. Legs: Femora, tibiae and tarsi light brown, femora with trachea black pigmented; claws brown. Leg I: tibia 0.6 × length of femur; tarsus 0.5 × length of femur. Leg II: tibia 0.8 × length of femur; tarsus 0.3 × length of femur. Leg III: tibia 0.8 × length of femur; tarsus 0.3 × length of femur. Wings. Forewing (Figure 13 G) hyaline, apical half opaque; veins white; stigmatic area with minimum of four cross veins not touching Sc vein; marginal intercalary veins paired, except between veins R 3 and A; length of each intercalary vein 0.5 × distance between adjacent longitudinal veins; length of forewing about 2.7 × width. Hind wing (Figure 13 H) hyaline, without cross veins; costal process compound. Abdomen (Figure 13 F, I). Terga light brown with posterior margin of all segments with brown mark submedially. Tracheation black. Sterna light brown whitish, posterior margin of all segments with brown mark medially. Caudal filaments white. Mature nymph. Length: body, 5.4 mm; cercus, 4.4 mm; terminal filament, 5.5 mm; antenna, 7.2 mm. (n = 2). Head. Coloration: light yellowish brown. Turbinate portion of male compound eyes yellowish brown. Antenna (Figure 14 A) yellowish white with spines and fine, simple setae on apex of each segment. Labrum (Figure 14 B, C). Excavate medially; length about 0.8 × maximum width; distal margin with deep medial emargination; lateral and anterolateral margin with long, fine, simple setae; distal margin medially with short, robust pectinate setae; long, fine, simple setae scattered over dorsal surface; submarginal row of setae absent; ventrally with short, spine-like setae near lateral margin and many long, simple setae near anterolateral margin. Right mandible (Figure 14 D) with 5 + 3 or 4 denticles; prostheca slender, bifurcated subapically, inner lobe short than outer; margin between prostheca and mola slightly convex; tuft of spine-like setae at base of mola present. Denticles of mola not constricted. Tuft of setae at apex of mola present; lateral margins slightly convex; basal half with short, fine, simple setae and pores scattered over dorsal surface. Left mandible (Figure 14 E) with 4 + 3 or 4 denticles; prostheca robust and bifid; margin between prostheca and mola straight; tuft of spine-like setae at base of mola present; subtriangular process wide, at the same level as area between prostheca and mola; denticles of mola not constricted; tuft of setae at apex of mola present; lateral margins slightly convex; basal half with short, fine, simple setae and pores scattered over dorsal surface. Hypopharynx (Figure 14 F). Lingua with three lobes in distal margin; superlingua not expanded; short, fine, simple setae scattered over distal margin of lingua and superlingua. Maxilla (Figure 14 G). Double row of setae with three simple denti-setae. Medial protuberance of galea with 1 + 4 spine-like setae. Maxillary palp reaching apex of galea-lacinia; palp segment II 0.6 × length of segment I; outer margin of segment I scattered with robust, short and pointed setae, apex of inner margin with four or five pointed setae, dorsal and ventral surface with pores; segment II with short pointed setae in inner margin, outer margin with long, fine and simple setae. Labium (Figure 14 H). Glossa with regular width along entire length and subequal in length to paraglossa; inner margin with 14 spine-like setae; apex with three to five long spine-like setae; outer margin with many long spine-like setae. Ventral surface scattered with short, fine, simple setae. Paraglossa curved inward; apex with two or three long, robust and simple setae. Ventrally with many long, fine, simple setae. Labial palp with segment I 1 × length of segments II and III combined; segment I covered with robust, simple setae and micropores; segment II without distomedial protuberance; inner and outer margin respectively with four spine-like setae and bare; dorsally with row of seven short spine-like setae; segment III concave; length 1.5 × width; covered with spine-like simple setae along margins and fine, simple setae, scattered over external surface. Thorax. Pronotum with brown spots; mesonotum yellowish with brown and light brown spots; metanotum with yellowish marks; sometimes all thorax light yellowish brown. Foreleg (Figure 15 A – D). Femur, tibia and tarsus light yellowish brown; femur with trachea black pigmented. Ratio of foreleg 1.5: (0.58 mm): 0.8: 0.5. Forefemur. Length about 4.5 × maximum width; dorsally with row of short, spine-like setae; apex with two robust spine-like setae; length of setae about 0.1 × maximum width of femur; ventrally with few long, fine and simple setae. Anterior surface with robust spine-like setae near dorsal margin and robust trifid and bifid spine-like setae near ventral margin. Tibia. Dorsally bare; ventrally with one row of short, spine-like setae. Anterior surface with few short, robust spine-like setae. Tarsus. Dorsally bare; ventrally one row of spine-like setae and trifid spine-like setae. Tarsal claw with two rows of denticles increasing in size distally. Hind leg (Figure 15 E – G). Femur with one row of short spine-like setae dorsally and ventrally. Anterior surface with many robust setae near ventral and dorsal margin. Tibia ventrally with row of short spine-like setae and one row of robust, pectinate spine-like setae. Abdomen (Figure 16 A). Yellowish washed with brown or light brown spots on all segments; terga I, II, IV and VI darker, surface creased. Posterior margin with regular spines, 3 × as long as wide (Figure 16 B). Sterna. Surface bare. Gills (Figure 16 C – E). Margin smooth; trachea black pigmented, extending from main trunk to outer margin. Gill I about 2 × length of segment II, with two folds; trachea black pigmented. Gill IV as long as length of segments V to VI combined, with two folds. Gill VII about 1.5 × length of segment VIII, with one fold. Paraproct (Figure 16 F, G) with 21 – 25 marginal spines; surface with micropores and short fine, simple setae; posterolateral extension with marginal spines. Terminal filament (Figure 16 I) light brown; posterior margin of segments with short spines on every segment. Cerci (Figure 16 H) with spines on all segments.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFB10853FE4BD045FDCCFD2E.taxon	etymology	Etymology The specific epithet is a tribute by the first author (PVC) to Itanna O. Fernandes: best friend, fantastic wife and the person who found the lake that is the only location at which this new species has been collected.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFB10853FE4BD045FDCCFD2E.taxon	discussion	Comments The nymphs of C. itannae sp. nov. and C. willineri are similar, although those of C. itannae sp. nov. have trifid spine-like setae on tarsi (Figure 15 C) and labrum ventrally with many long, simple setae near anterolateral margin (Figure 14 B). Nymphs of C. willineri, on the other hand, have pectinate setae on tarsi (fig. 82 in Nieto 2008) and labrum ventrally without many long, simple setae near anterolateral margin (fig. 76 a in Nieto 2008).	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFB10853FE4BD045FDCCFD2E.taxon	materials_examined	Material examined Holotype. female imago with corresponding nymphal exuviae, BRAZIL, Rondônia, Porto Velho, Lake for Cond. Águas do Belmont (8 ◦ 40 ′ 41,01 ′′ S, 63 ◦ 53 ′ 21,60 ′′ W), 3 / iii / 2007, P. V. Cruz col. (INPA). Paratypes. Four male imagos, three exuviae, Lake for Cond. Águas do Belmont, 3 / iii / 2007, P. V. Cruz col. (two male imagos and two exuviae in INPA, two male imagos and one exuviae in CZNC). One nymph, four female imagos, two male subimagos, female subimago, five exuviae, Lake for Cond. Águas do Belmont, 23 / iii / 2007, P. V. Cruz col. (two females in INPA, other in CZNC). Four nymphs, Lake for 23 Cond. Águas do Belmont, 30 / ix / 2007, P. V. Cruz col. (two nymphs in INPA, two nymphs in CZNC). Nymph, Lake for Cond. Águas do Belmont, 17 / iii / 2007, P. V. Cruz col. (INPA). One male subimago, Lake for Cond. Águas do Belmont, 14 / iii / 2007, P. V. Cruz col. (INPA). One female imago, Lake for Cond. Águas do Belmont, 21 / iii / 2007, P. V. Cruz col. (CZNC). One male imago, one exuviae, Lake for Cond. Águas do Belmont, 9 / iii / 2007, P. V. Cruz col. (INPA). Nymph, four female imagos, five nymphs, three nymphs, female subimago, five exuviae, Lake for Cond. Águas do Belmont, 7 / iv / 2007, P. V. Cruz col. (INPA). Nymph, Lake for Cond. Águas do Belmont, 5 / iv / 2007, P. V. Cruz col (CZNC).	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFB10853FE4BD045FDCCFD2E.taxon	distribution	Distribution Brazil: Rondônia state, Porto Velho county.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFB9084BFE73D754FC9FFDD1.taxon	description	(Figures 17 – 20)	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFB9084BFE73D754FC9FFDD1.taxon	diagnosis	Diagnosis Male imago. (1) Dorsal portion of tubinate eyes oval (Figure 17 A); (2) forewing with three transversal bands, apical third pigmented, base without pigmentation (Figure 17 D); (3) marginal intercalary veins paired (Figure 17 D); (4) hind wing hyaline, base with small reddish brown mark (Figure 17 E); (5) costal process of hind wing basally with reddish mark (Figure 17 E); (6) abdominal sterna with many reddish spots, sterna II to IX with one anterolaterally dark mark and one reddish medial mark on anterior margin; (7) forceps segment I wide at base (Figure 17 C). Female imago. (1) Membrane of forewing washed with black, hyaline around cross veins, area between C, Sc and R 1 veins darker (Figure 17 G); (2) marginal intercalary veins paired (Figure 17 G); (3) hind wing hyaline, base with red mark (Figure 17 H); (4) costal process of hind wing basally with black mark, wing base with red mark (Figure 17 H); (5) abdominal terga III, V and VII with V-shape marks sublaterally and laterally (Figure 17 F); (6) abdominal sterna I to IX washed with red spots, reddish black mark anterolaterally (Figure 17 I). Mature nymph. (1) Antenna with spines; (2) distal margin of labrum with small medial emargination (Figure 18 B); (3) distal margin of labrum medially with robust bipectinate setae (Figure 18 B); (4) maxillary palp reaching apex of galea-lacinia (Figure 18 F); (5) glossa subequal in length to paraglossa; (6) labial palp with spine-like setae; (7) anterior surface of forefemur with one row of robust trifid and bifid spine-like setae near ventral margin (Figure 19 B); (8) fore tarsus ventrally with one row of trifid spine-like setae, one row of long robust and bipectinate setae; (9) hind femur with two rows of curved and pectinate setae, the middle row directed dorsally and the row near ventral margin directed ventrally (Figure 19 F); (10) hind claw similar to fore claw; (11) gills IV with two folds (Figure 20 F); (12) cerci with spines on all segments (Figure 20 I); (13) terminal filament with spines on all segments (Figure 20 J).	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFB9084BFE73D754FC9FFDD1.taxon	description	Redescription Male imago. Length: body, 7.4 mm; cercus, 14.4 mm; forewing, 7 mm; hind wing, 1.2 mm; antenna, 1 mm; tibia I, 1.9 mm; tibia II, 1.3 mm; tibia III, 1.2 mm. (n = 2) Head (Figure 17 A, B). Coloration dark brown. Turbinate portion of compound eyes reddish dorsally, with white edges; laterally with basal half reddish, apical half white. Antenna. Scape and pedicel dark brown, flagellum light brown. Dorsal portion of turbinate eyes oval; length 4.1 × width; stalk height 0.6 × dorsal portion height; inner margins parallel, not reaching each other. Thorax (Figure 17 A, B). Anteronotal protuberance light brown, laterally white, submedially brown; mesoscutum and submesoscutum light brown; posterior scutal protuberance brown; scutellum light brown. Anteronotal and metascutellar protuberance rounded. Legs: Femora I, II and III with longitudinal black line on external surface, internal and external surface with red mark on apical third, apex with black mark ventrally; tibia I with black mark ventrally on apex, tibiae II and III with two black marks on base and apex; tarsus I without pigmentation, tarsi II and III with brown apex; claws light brown. Leg I: tibia 1.3 × length of femur; tarsus 1.5 × length of femur. Leg III: tibia 0.7 × length of femur; tarsus 0.3 × length of femur. Wings. Forewing (Figure 17 D) with three transversal bands, apical third pigmented, base without pigmentation; around cross veins hyaline; veins light brown; stigmatic area with eight or nine cross veins touching subcostal vein and one or two veins not touching subcostal vein; marginal intercalary veins paired, except between veins ICu 2 and A; length of each intercalary vein 0.5 – 0.8 × distance between adjacent longitudinal veins; length of forewing about 2.5 × width. Hind wing (Figure 17 E) hyaline, base with small reddish brown mark, costal process base with reddish mark; with 11 to 14 cross veins; costal process compound. Abdomen. Terga brown, terga II, III, V and VII laterally reddish brown; terga VIII and IX with two longitudinal brown marks submedially; terga II and IX with one red mark medially on anterior margin; tracheation black. Sterna segments I to VI light brown, washed with reddish spots, segments VII to IX whitish washed with reddish spots; segments II to IX with one anterolateral dark mark and one reddish medial mark on anterior margin; submedially with two light brown marks. Caudal filaments white with light brown mark on base and apex of each segment. Genitalia (Figure 17 C) brown. Forceps segment I wide at base; 0.5 × length of segment II; distance between base of forceps 0.3 × distance between lateral margins of forceps. Forceps segment III oval, 1.6 × as long as wide; 0.2 × length of segment II. Posterior margin of styliger plate without medial projection. Female imago. Length: body, 9 mm; forewing, 8 mm; hind wing, 1.3 mm; antenna, 0.9 mm; tibia I, 1.3 mm; tibia II, 1.1 mm; tibia III, 1.3 mm. (n = 2) Head (Figure 17 F). Coloration reddish brown; compound eyes black with longitudinal line brown. Antenna with apex of scape ventrally reddish brown; pedicel reddish brown with white base; flagellum reddish brown. Thorax (Figure 17 F, I). Anteronotal protuberance light brown, laterally white; mesoscutum and submesoscutum light brown, white washed; posterior scutal protuberance black; scutellum white. Anteronotal protuberance rounded. Metascutellar protuberance rounded. Legs: Femora I, II and III with longitudinal black line on external surface, external and internal surface with red mark on apical third, apex with black mark ventrally; tibiae I, II and III with two black marks on base and one on apex. Leg I: tibia 0.9 × length of femur. Leg II: tibia 1 × length of femur; tarsus 0.5 × length of femur. Leg III: tibia 0.7 × length of femur; tarsus 0.4 × length of femur. Wings. Forewing (Figure 17 G) with membrane washed with black, around cross veins hyaline, C, Sc and R 1 veins areas darker; veins brown; stigmatic area with eight or nine cross veins touching subcostal vein and zero or one not; marginal intercalary veins paired, except between veins ICu 1 and A; length of each intercalary vein 0.3 – 0.5 × distance between adjacent longitudinal veins; length of forewing about 2.4 × width. Hind wing (Figure 17 H) costal process base with black mark, wing base with red mark; with nine cross veins; costal process compound. Abdomen (Figure 17 F, I). Terga washed with red spots, terga II to IX with one red medial mark; segments III, V and VII with V-shaped mark sublaterally and laterally. Tracheation black. Sterna segments I to IX washed with red spots, one reddish black marks anterolaterally, submedially with two light brown marks. Caudal filaments white, reddish on base and apex of each segment. Description Mature nymph. Length: body, 6.7 mm; cercus, 6 mm; terminal filament, 3.6 mm; antenna, 7.2 mm. (n = 2) Head. Coloration: dark brown. Turbinate portion of male compound eyes reddish. Antenna (Figure 18 A) yellowish brown with spines and fine, simple setae on apex of each segment. Labrum (Figure 18 B). Distal margin with small medial emargination; length about 0.6 × maximum width; distal margin slightly rounded; distal and anterolateral margin with long and simple setae; distal margin medially with robust bipectinate setae; dorsally with long, fine, simple setae scattered over surface; submarginal row of setae absent; ventrally with short spine-like setae near lateral margin and many long, simple setae near anterolateral margin. Right mandible (Figure 18 C) with 4 + 4 denticles; prostheca slender and bifurcated, inner lobe shorter than outer; margin between prostheca and mola convex with short projection; tuft of spine-like setae at base of mola present. Denticles of mola not constricted. Tuft of setae at apex of mola present; lateral margins slightly convex; basal half with short, fine, simple setae and pores scattered over dorsal surface. Left mandible (Figure 18 D) with 4 + 4 denticles; prostheca robust and bifid; margin between prostheca and mola straight; tuft of spine-like setae at base of mola present; subtriangular process narrow, at same level as area between prostheca and mola; denticles of mola not constricted; tuft of setae at apex of mola present; lateral margins slightly convex; basal half with short, fine, simple setae and pores scattered over dorsal surface. Hypopharynx (Figure 18 E). Lingua with three lobes in distal margin; superlingua not expanded; short, fine, simple setae scattered over distal margin of lingua and superlingua. Maxilla (Figure 18 F). First denti-setae with small spines on outer margin, others bifid. Medial protuberance of galea with 1 + 4 spine-like setae. Maxillary palp reaching apex of galea-lacinia; palp segment II 1 × length of segment I; outer margin of segment I with robust and pointed setae, apex of inner margin with seven or eight pointed setae, dorsal and ventral surface with pores; segment II with short pointed setae in inner margin, outer margin with long, fine and simple setae. Labium (Figure 18 G). Glossa with regular width along entire length and subequal in length to paraglossa; inner margin with 14 spine-like setae increasing in length apically; apex with three to five long spine-like setae; outer margin with many long spine-like setae. Dorsally with many long spine-like setae. Ventral surface scattered with few long, fine and simple setae, inner margin with one row of short spine-like setae. Paraglossa subrectangular, curved only at apex; apex with two or three long, robust and simple setae. Ventrally with one row of spine-like setae near inner margin. Labial palp with segment I 0.8 × length of segments II and III combined; segment I dorsally covered with micropores, robust spine-like setae near outer margin; ventrally covered with micropores, robust spine-like setae near inner margin; surfaces covered by long, fine and simple setae; segment II without distomedial protuberance; inner and outer margin respectively with eight or nine short spine-like setae and bare; dorsally with row of six short spine-like setae; segment III concave; length 1.3 × width; covered with spine-like simple setae along margins and fine, simple setae, scattered over outer surface. Thorax. Foreleg (Figure 19 A – D). Ratio of foreleg 1.5: (0.7 mm): 0.9: 0.4. Forefemur with black mark on base and other on apical third, tibia with black mark on base and apex. Length about 2.7 × maximum width; dorsally with few short spine-like setae, apex with two robust spine-like setae; length of setae about 0.1 × maximum width of femur; ventrally with few long, fine and simple setae. Anterior surface with robust spine-like setae near dorsal margin and one row of robust trifid and bifid spine-like setae near ventral margin. Tibia. Dorsally bare; ventrally with one row of short and long spine-like setae. Anterior surface with robust and short spine-like setae, one row of robust and long bipectinate setae near ventral margin. Tarsus. Dorsally abundant short, fine, simple setae; ventrally with one row of trifid spine-like setae, one row of long robust and bipectinate setae, surfaces with long, robust and bipectinate setae near ventral margin. Tarsal claw with two rows of denticles increasing in size distally. Mid femur with two rows of curved and pectinated setae directed ventrally, near ventral margin and medially; fore and mid tibiae similar; mid tarsus with one row of long and robust setae ventrally, surfaces with long, robust and bipectinate setae. Hind leg (Figure 19 E – H). Hind femur with two rows of curved and pectinated setae, the middle row directed dorsally and the row near ventral margin directed ventrally; hind tibia like fore, although with more long, robust and bipectinate setae; hind tarsus ventrally with one row of long and robust spine-like setae, surfaces with long, robust and bipectinate spine-like setae. Abdomen (Figure 20 A). Segments II, III and VII dorsally black, ventrally with longitudinal lateral red marks. Terga. Surface creased. Posterior margin with regular spines (Figure 20 B). Sterna. Surface with scattered fine, simple setae. Gills (Figure 20 C – G). Margin smooth; trachea black pigmented, extending from main trunk to outer margin. Gill I subequal in length to segment II, with three folds. Gill IV as long as length of segments V to VI combined, with two folds. Gill VII subequal in length to segment VIII, with one fold. Paraproct (Figure 20 H) with 37 – 45 marginal spines; surface with micropores and short fine, simple setae; posterolateral extension with marginal spines. Terminal filament (Figure 20 J) blackish apex on each four segments; posterior margin with spines on all segments. Cerci (Figure 20 I) with spines on all segments.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFB9084BFE73D754FC9FFDD1.taxon	materials_examined	Material examined Female imago, photograph of the type of C. stictogaster from Museo de Ciencias Naturales de La Plata, 15 / x / 1913. Male imago, type photograph of C. jocosus from Museu de Zoologia de Barcelona, 8 / iv / 1910. Female imago (reared), two male imagos (reared), BRAZIL, São Paulo, Jundiaí, Serra do Japií, Lake near two houses, (23 ◦ 14 ′ 15.1 ′′ S, 046 ◦ 56 ′ 26.2 ′′ W), 14 / vii / 2009, 1043 m, Brito, P. col. (INPA). Two male imagos, one female imago (reared) and two nymphs, BRAZIL, São Paulo, Jundiaí, Serra do Japií, Lake near two houses, (23 ◦ 14 ′ 15.1 ′′ S, 046 ◦ 56 ′ 26.2 ′′ W), 15 / ix / 2009, Brito, P. col. (INPA).	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFB9084BFE73D754FC9FFDD1.taxon	distribution	Distribution Argentina, Chile, Paraguay and Brazil: São Paulo state, São Paulo county and Jundiaí county; Mato Grosso do Sul state, Porto Esperança county.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFA10843FE56D678FECCFC8C.taxon	description	(Figures 21 – 24) urn: lsid: zoobank. org: act: A 21878 EB- 8 D 8 A- 4233 - 9 EBF-AC 8 AED 542405 Known stages: I ♀ ♂, N	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFA10843FE56D678FECCFC8C.taxon	diagnosis	Diagnosis Male imago. (1) Dorsal portion of turbinate eyes circular, base of the turbinate portion of eyes as wide as apex in lateral view; (Figure 21 A) (2) forewing hyaline, except C, Sc, R 1 and area around bulla (Figure 21 D) brown coloured; (3) marginal intercalary veins paired, except between veins ICu 2 and A (Figure 21 D); (4) hind wing hyaline with brown mark basally, medially and apically (Figure 21 E); (5) costal process of hind wing compound (Figure 21 E); (6) abdominal sterna black; (7) forceps segment I cylindrical (Figure 21 C). Female imago. (1) Forewing hyaline, except C, Sc, R 1 and area around bulla brown coloured; area near posterior margin with some elongate brown marks (Figure 21 G); (2) marginal intercalary veins single (Figure 21 G); (3) hind wing with two or one brown mark on middle and sometimes with small mark near costal process, always with pigmented apex; (Figure 21 H, I); (4) costal process of hind wing compound (Figure 21 H); (5) abdominal sterna with many light brown spots and four brown spots submedially (Figure 21 J); (6) abdominal terga I, III, IV, V, VI with red inverted “ V ” mark medially (Figure 21 F). Mature nymph. (1) Antenna without spines, with fine, simple setae (Figure 22 A); (2) distal margin of labrum with deep medial emargination (Figure 22 B); (3) labrum with lateral and anterolateral margin with long and simple setae; distal margin, submedially with long and apically bifid setae; distal margin, medially with robust bipectinate setae (Figure 22 B); (4) maxillary palp reaching apex of galea-lacinia (Figure 22 E); (5) glossa subequal in length to paraglossa (Figure 22 G); (6) labial palp with spine-like setae (Figure 22 G); (7) anterior surface of forefemur with robust spine-like setae near dorsal margin and one row of robust spine-like setae near ventral margin (Figure 23 B); (8) tarsus ventrally with one row of robust spine-like setae (Figure 23 C); (9) hind femur similar to forefemur (Figure 23 F); (10) hind claw without minute spines on surface (Figure 23 H); (11) gill VII as long as length of segments VIII to half IX combined, with one fold (Figure 24 F); (12) cerci with spines on all segments (Figure 24 H); (13) terminal filament with spines on each segment (Figure 24 I).	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFA10843FE56D678FECCFC8C.taxon	description	Description Male imago. Length: body, 4.2 mm; cercus, 6.8 mm; forewing, 4 mm; hind wing, 0.6 mm; antenna, 1 mm; tibia, I 1 mm; tibia II, 0.7 mm; tibia III, 0.7 mm. (n = 2). Head (Figure 21 A, B). Coloration brown. Turbinate portion of compound eyes dorsally light brown, stalk brown, apical third light brown. Antenna. Scape and pedicel light brown with apex brown, flagellum brown with white base. Dorsal portion of turbinate eyes circular; length 1 × width; stalk height 2.3 × dorsal portion height; base of the turbinate portion of eyes as wide as apex in lateral view; inner margins parallel, not reaching each other. Thorax (Figure 21 A, B). Anteronotal protuberance, mesoscutum, submesoscutum, posterior scutal protuberance and scutellum brown. Anteronotal protuberance rounded. Metascutellar protuberance pointed. Legs: Femur I with continuous longitudinal black marks on external surface, tibia I, tarsus I and claws white; femur II with continuous longitudinal black marks on internal surface, tibia II white with light marks on base and apex, tarsus II and claws white; femur III with continuous longitudinal black marks on internal surface, tibia III white with light marks on base and apex, tarsus III and claws white. Leg I: tibia 1.1 × length of femur; tarsus 0.7 × length of femur. Leg III: tibia 0.8 × length of femur; tarsus 0.4 × length of femur. Wings. Forewing (Figure 21 D) hyaline, except C, Sc, R 1 and area around bulla brown coloured (black arrow in Figure 21 D); veins light brown; stigmatic area with seven to eight cross veins touching subcostal vein and one or two veins not touching subcostal vein; marginal intercalary veins paired, except between veins ICu 2 and A; length of each intercalary vein 0.3 – 0.6 × distance between adjacent longitudinal veins; length of forewing about 2.7 × width. Hind wing (Figure 21 E) hyaline with brown marks basally, medially and apically; costal process compound. Abdomen. Terga brown; tracheation black. Sterna black. Caudal filaments white with base brown. Genitalia (Figure 21 C). Forceps segment I brown, segments II and III light brown. Forceps segment I cylindrical; 0.3 × length of segment II; distance between base of forceps 0.3 × distance between lateral margins of forceps. Forceps segment III oval, 4 × as long as wide; 0.2 × length of segment II. Posterior margin of styliger plate without medial projection. Female imago. Length: body, 6.2 mm; forewing, 5.4 mm; hind wing, 0.8 mm; antenna, 0.8 mm; tibia I, 0.9 mm; tibia II, 0.9 mm; tibia III, 0.8 mm. (n = 2). Head (Figure 21 F). Coloration light brown, posterior margin with two brown spots; compound eyes black, sometimes with brown transversal line. Antenna. Scape and pedicel with brown apex, flagellum light brown with base white. Thorax (Figure 21 F, J). Anteronotal protuberance, mesoscutum, submesoscutum, posterior scutal protuberance and scutellum light brown. Anteronotal protuberance rounded. Metascutellar protuberance pointed. Legs: Femora I, II and III light brown with discontinuous longitudinal pigmented line on external surface; tibiae I, II and III light brown with reddish brown mark ventrally on base and brown around apex; tarsi I, II and III light brown, tarsus I with two brown marks on apex of first and second segments, tarsi II and III with one brown mark on first segment; claws light brown. Leg I: tibia 1.2 × length of femur; tarsus 0.8 × length of femur. Leg II: tibia 0.8 × length of femur; tarsus 0.5 × length of femur. Leg III: tibia 0.7 × length of femur; tarsus 0.5 × length of femur. Wings. Forewing (Figure 21 G) hyaline, except C, Sc, R 1 and area around bulla brown coloured (black arrow in Figure 21 G); near posterior margin with some elongate brown marks; veins brown; stigmatic area with seven cross veins touching subcostal vein and one not; marginal intercalary veins single; length of each intercalary vein 0.3 – 0.5 × distance between adjacent longitudinal veins; length of forewing about 2.3 × width. Hind wing (Figure 21 H, I) with two or one brown mark on middle and sometimes with small mark near costal process, always with pigmented apex; normally with three complete longitudinal veins, sometimes first not reaching; costal process compound. Abdomen (Figure 21 F, J). Terga with all segments with two light brown marks submedially and one spot laterally; terga I, III, IV, V, VI with red inverted “ V ” mark medially. Tracheation black. Sterna with many brown spots and four brown spots submedially. Mature nymph. Length: body, 5.5 mm; cercus, 3.3 mm; terminal filament, 2.7 mm. (n = 2). Head. Coloration: light brown. Antenna light brown, (Figure 22 A) without spines, with fine, simple setae. Labrum (Figure 22 B). Excavate medially; length about 0.7 × maximum width; distal margin with deep medial emargination; lateral and anterolateral margin with long and simple setae; distal margin submedially with long and apically bifid setae; distal margin medially with robust bipectinate setae; dorsally with long, fine, simple setae scattered over surface; ventrally with short spine-like setae near lateral margin and many long, simple setae near anterolateral margin. Right mandible (Figure 22 C) with 4 + 3 denticles; prostheca slender and bifurcated, sometimes simple; margin between prostheca and mola convex; tuft of spine-like setae at base of mola present; tuft of setae at apex of mola present; lateral margins slightly convex; basal half with short, fine, simple setae and pores scattered over dorsal surface. Left mandible (Figure 22 D) with 4 + 3 denticles; prostheca robust and bifid, sometimes trifid; margin between prostheca and mola straight; tuft of spine-like setae at base of mola present; subtriangular process wide, above level of area between prostheca and mola; denticles of mola not constricted; tuft of setae at apex of mola present; lateral margins slightly convex; basal half with short, fine, simple setae and pores scattered over dorsal surface. Hypopharynx (Figure 22 F). Lingua with three lobes in distal margin; superlingua not expanded; short, fine, simple setae scattered over distal margin of lingua and superlingua. Maxilla (Figure 22 E). Double row of setae with one simple denti-setae and other with spines. Medial protuberance of galea with 1 + 4 spine-like setae. Maxillary palp reaching apex of galea-lacinia; palp segment II 0.7 × length of segment I; outer margin of segment I scattered with robust and pointed setae, apex of inner margin with seven or eight pointed setae, dorsal and ventral surface with pores; segment II with short pointed setae in inner margin, outer margin with long, fine and simple setae. Labium (Figure 22 G). Glossa with regular width along entire length and subequal in length to paraglossa; inner margin with nine to eleven spine-like setae; apex with three to five spine-like setae; outer margin with many long spine-like setae. Dorsally with many long spine-like setae. Ventral surface scattered with few long, fine and simple setae, inner margin with one row of short spine-like setae. Paraglossa curved inward; apex with three to five robust and simple setae. Ventrally with one row of spine-like setae near inner margin (black arrow in Figure 22 G). Labial palp with segment I 0.8 × length of segments II and III combined; segment I dorsally covered with micropores, near outer margin with robust spine-like setae; ventrally, near inner margin with robust spine-like setae, sometimes with robust spine-like setae on base of outer margin; segment II without distomedial protuberance; inner and outer margin, respectively, with eight or nine short spine-like setae and with few robust spine-like setae; dorsally with row of four to six short spine-like setae; segment III concave; length 1.2 × width; covered with spine-like simple setae along margins and fine, simple setae, scattered over outer surface. Thorax light brown. Foreleg (Figure 23 A – D) light brown, posterior surface with longitunal discontinous brown mark. Ratio of foreleg 1.2: (0.8 mm): 0.6: 0.4. Forefemur. Length about 4.7 × maximum width; dorsally with few short spine-like setae, apex with two robust spine-like setae; length of setae about 0.3 × maximum width of femur; ventrally with few long, fine and simple setae. Anterior surface with robust spine-like setae near dorsal margin and one row of robust spine-like setae near ventral margin, surface with micropores. Tibia. Dorsally bare; ventrally with one row of short spine-like setae. Anterior surface with few long, fine simple setae. Tarsus. Dorsally abundant short, fine, simple setae; ventrally one row of robust spine-like setae. Tarsal claw with two rows of denticles increasing in size distally, many minute spines on surface. Hind leg (Figure 23 E – H). Tarsus, ventrally with one row of spine-like setae, anterior surface with one row of robust bipectinate setae. Abdomen (Figure 24 A). Light brown, segments I, II and VI darker. Terga. Posterior margin with regular spines, 3 × as long as wide (Figure 24 B). Sterna. Surface with scattered fine, simple setae. Gills (Figure 24 C – F). Trachea black pigmented, extending from main trunk to outer margin. Gill I about half length of segment II, with two folds. Gill IV 1.5 × length of segment V, with three folds. Gill VII as long as length of segments VIII to half IX combined, with one fold. Paraproct (Figure 24 G) with 21 – 25 marginal spines; surface with micropores and short fine, simple setae; posterolateral extension with minute marginal spines. Terminal filament (Figure 24 I) light brown; posterior margin with spines on each segment. Cerci (Figure 24 H) with spines on all segments.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFA10843FE56D678FECCFC8C.taxon	etymology	Etymology The specific epithet is a reference to the forewing pigmentation pattern (nigracyclus, from Greek and Latin, meaning “ black circle ”).	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFA10843FE56D678FECCFC8C.taxon	discussion	Comments The adults of C. nigracyclus sp. nov. and C. gelidus sp. nov. are similar; however, the male imago of C. nigracyclus sp. nov. has the base of the turbinate portion of eyes as wide as apex and larger number and small size of ommatidia in the upper portion of compound eyes (Figure 21 A), while in C. gelidus sp. nov. the base is wider than apex and small number and large size of ommatidia in the upper portion of compound eyes (Figure 10 A); female imago of C. nigracyclus sp. nov. has brown marks near posterior margin of forewing (Figure 21 G), while in C. gelidus sp. nov. these marks are absent (Figure 10 H). The nymphs of C. nigracyclus sp. nov. and C. gelidus sp. nov. cannot be distinguished.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFA10843FE56D678FECCFC8C.taxon	materials_examined	Material examined Holotype. Female imago with corresponding nymphal exuviae, BRAZIL, Amazonas, Manaus, Lake of Reserva ZF 2 (03 ◦ 10 ′ 59.9 ′′ S, 060 ◦ 05 ′ 17.7 ′′ W), 14 / vii / 2008, illuminated sheet, P. V. Cruz col. (CZNC). Paratypes. Two female imagos, four male imagos and one female imago (with exuviae), BRAZIL, Amazonas, Manaus, Lake of Reserva ZF 2 (03 ◦ 10 ′ 59.9 ′′ S, 060 ◦ 05 ′ 17.7 ′′ W), 14 / vii / 2008, illuminated sheet, P. V. Cruz col. (CZNC). Two female imagos, BRAZIL, Amazonas, Presidente Figueiredo, Igarapé Pantera (1 ◦ 28 ′ 29.82 ′′ S, 60 ◦ 16 ′ 26.52 ′′ W), AM 240 – Km 20, 19 / x / 2008, illuminated sheet, P. V. Cruz col. (INPA). Female imago (with nymphal exuviae on slides) and four nymphs, BRAZIL, Amazonas, Manaus, Lake of Reserva SokaGakkai (3 ◦ 7 ′ 28.87 ′′ S, 60 ◦ 0 ′ 45.68 ′′ W), 03 / x / 2008, reared, P. V. Cruz col. (CZNC). Female imago (with exuviae), BRAZIL, Amazonas, Manaus, Balneário no Km 18 – Br 174 (2 ◦ 49 ′ 00.8 ′′ S, 60 ◦ 02 ′ 05.6 ′′ W), 17 / iv / 2009, reared, P. V. Cruz col. (INPA). Female imago, BRAZIL, Pará, Parauapebas (Flona do Carajás – Buritizal) (6 ◦ 04 ′ 14.88 ′′ S, 49 ◦ 54 ′ 15.59 ′′ W), brook, 26 / ix / 2008, light trap, (INPA).	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFA10843FE56D678FECCFC8C.taxon	distribution	Distribution Brazil: Amazonas state, Manaus county, Presidente Figueiredo county; Pará state, Parauapebas county.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFA90841FE16D735FDFFFCFE.taxon	description	(Figure 25)	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFA90841FE16D735FDFFFCFE.taxon	diagnosis	Diagnosis Male imago. (1) Dorsal portion of turbinate eyes oval; (2) forewings hyaline (fig. 37 in Nieto 2008); (3) marginal intercalary veins single (fig. 37 in Nieto 2008); (4) hind wing hyaline; (5) costal process of hind wing compound (fig. 38 a in Nieto 2008); (6) abdominal sterna with black mark anterolaterally; (7) forceps segment I wide at base, with setae on inner margin, segment III elongate (fig. 39 in Nieto 2008). Female imago. (1) Forewings hyaline (Figure 25 B); (2) marginal intercalary veins single (Figure 25 B); (3) hind wing hyaline; (4) costal process of hind wing compound (Figure 25 C); (5) abdominal sterna II to IX with black mark anterolaterally (Figure 25 D); (6) abdominal terga reddish brown (Figure 25 A). Mature nymph. (1) Distal margin of labrum with deep medial emargination, distal margin, medially with row of long and bifid setae (fig. 43 a in Nieto 2008); (2) maxillary palp 1.5 × length of galea-lacinia (fig. 47 in Nieto 2008); (3) glossa shorter than paraglossa (fig. 48 a in Nieto 2008); (4) segment III of labial palp truncate at apex (fig. 48 in Nieto 2008); (5) mid and hind tarsal claws with two rows of minute denticles (figs. 49, 51 in Nieto 2008); (6) cerci with spines on all segments (fig. 54 in Nieto 2008); (7) terminal filament with spines on all segments.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFA90841FE16D735FDFFFCFE.taxon	discussion	Comments The imagos of C. pollens can be easily distinguished from other species in the genus by the forewings hyaline with single marginal intercalary veins; the nymphs can be distinguished from other species in the genus by the mid and hind tarsal claws with two rows of minute spines; labrum with bifid setae medially and posterior margin of metanotum with pointed spines.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFA90841FE16D735FDFFFCFE.taxon	materials_examined	Material examined Two female imagos, ARGENTINA, Acheral, Tucumán, Aranillas River, cruce RP 38, 366 m, (27 ◦ 06 ′ 59.9 ′′ S, 65 ◦ 27 ′ 43.9 ′′ W), 13 / ix / 2007, Nieto and Molineri col. (CZNC); five nymphs, ARGENTINA, Acheral, Tucumán, Aranillas River, cruce RP 38, 366 m, (27 ◦ 06 ′ 59.9 ′′ S, 65 ◦ 27 ′ 43.9 ′′ W), 28 / vii / 2006, Nieto and Molineri col. (CZNC); one female imago, one male imago, eight nymphs, BRAZIL, Lajeado River, BR 010, under the brigde, Maranhão, (06 ◦ 04 ′ 15.6 ′′ S, 47 ◦ 22 ′ 56.6 ′′ W), 21 / vii / 2010, N. Hamada, P. V. Cruz and R. Boldrini col (INPA); two male imagos, five nymphs, BRAZIL, Maranhão, Riachão, Riacho Cocal, Cachoeira Santa Bárbara, (07 ◦ 13 ′ 46.2 ′′ S, 46 ◦ 27 ′ 24.6 ′′ W), 23 / vii / 2010, N. Hamada, P. V. Cruz and R. Boldrini col (INPA); two female imagos, BRAZIL, Maranhão, Farinha River, BR 010, under the brigde, (06 ◦ 31 ′ 47.3 S, 47 ◦ 28 ′ 11.4 ′′ W), 22 / vii / 2010, N. Hamada, P. V. Cruz and R. Boldrini col (INPA); five male imagos, seven female imagos, twelve nymphs, BRAZIL, Ceará, Jaburu River, Ubajara, Distrito da Cachoeira do Boi Morto, (03 ◦ 52 ′ 36.2 ′′ S, 41 ◦ 0.1 ′ 0.08 ′′ W), 26 / vii / 2010, N. Hamada, P. V. Cruz and R. Boldrini col (INPA); four nymphs, BRAZIL, Brejinho, near Posto Cachoeira, Bahia, Correntina, (13 ◦ 43 ′ 53.5 ′′ S, 45 ◦ 23 ′ 38.1 ′′ W), 08 / viii / 2010, N. Hamada, Ranise and R. Boldrini col (INPA); eight nymphs, BRAZIL, Bahia, Côcos, Formoso River, highway to Mambaí county, (14 ◦ 40 ′ 00.6 ′′ S, 45 ◦ 49 ′ 32.3 ′′ W), 11 / viii / 2010, N. Hamada, Ranise and R. Boldrini col (INPA).	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFA90841FE16D735FDFFFCFE.taxon	distribution	Distribution Argentina and Brazil: Mato Grosso do Sul state, Corumbá county; Maranhão state, Lajeado River, Riachão county, Farinha River; Ceará state, Ubajara county; Bahia state, Correntina county, Côcos county.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFAB0847FE4ED703FC31FDA0.taxon	description	(Figure 26)	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFAB0847FE4ED703FC31FDA0.taxon	diagnosis	Diagnosis Male imago. (1) Dorsal portion of turbinate eyes oval (Figure 26 A); (2) forewing hyaline (Figure 26 D); (3) marginal intercalary veins single (Figure 26 D); (4) base of subcostal vein with small light brown spot (Figure 26 D); (5) costal process of hind wing compound (Figure 26 E); (6) segment I wide at base, segment III of forceps truncated (Figure 26 C). Female imago. (1) Forewing veins C, Sc and R 1 areas brown pigmented (Figure 26 G); (2) marginal intercalary veins single (Figure 26 G); (3) hind wing hyaline (Figure 26 H); (4) costal process of hind wing compound (Figure 26 H); (5) abdominal sterna with black anterolateral marks (Figure 26 I). Mature nymph. (1) Labrum with small medial emargination (fig. 1 in Salles et al. 2003); (2) distal margin of labrum with long and simple spine-like setae (fig. 1 in Salles et al. 2003); (3) maxillary palp subequal in length of galea-lacinia; (4) glossa subequal in length than paraglossa; (5) forefemur with short spine-like setae near ventral and dorsal margin (fig. 8 in Salles et al. 2003).	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFAB0847FE4ED703FC31FDA0.taxon	discussion	Comments The imagos of C. radiatus can be distinguished from other species in the genus by the costal process truncated on hind wing.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFAB0847FE4ED703FC31FDA0.taxon	materials_examined	Material examined Male imago and female imago (reared), BRAZIL, Minas Gerais, Viçosa, Ranário – Universidade Federal de Viçosa, 27 / i / 1997, Silva, E. R. col. (CZNC). Female imago (reared), BRAZIL, Minas Gerais, Viçosa, Ranário – Universidade Federal de Viçosa, 18 / i / 1997, Silva, E. R. col. (CZNC).	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFAB0847FE4ED703FC31FDA0.taxon	distribution	Distribution Argentina, Paraguay and Brazil: Minas Gerais state, Viçosa county.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFAD0845FE25D6E9FC8DFCD7.taxon	description	(Figure 27)	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFAD0845FE25D6E9FC8DFCD7.taxon	diagnosis	Diagnosis Male imago. (1) Forewing with two reddish brown bands, second band parallel to posterior margin of wing (Figure 27 D); (2) marginal intercalary veins paired (Figure 27 D); (3) hind wing with 15 – 30 cross veins (Figure 27 E); (4) costal process of hind wing compound (Figure 27 E); (5) abdominal sterna washed with red spots with one mark anterolaterally; (6) forceps segment I wide at base, segment III elongate (Figure 27 C). Female imago. (1) Forewing with two reddish bands, second parallel to posterior margin of wing (Figure 27 G); (2) marginal intercalary veins paired (Figure 27 G); (3) hind wing with 15 – 30 cross veins (Figure 27 H); (4) costal process of hind wing compound (Figure 27 H); (5) abdominal sterna, medially with one pair of light brown marks (Figure 27 I); (6) abdominal terga covered by red spots with one mark anterolaterally (Figure 27 F). Mature nymph. (1) Labrum with deep medial emargination, distal margin with long and simple spine-like setae (fig. 61 a in Nieto 2008); (2) maxillary palp longer than galea-lacinia (fig. 65 in Nieto 2008); (3) glossa subequal in length than paraglossa (fig. 66 a in Nieto 2008); (4) forefemur, near ventral margin, with row of trifid spine-like setae; (5) foretarsus with pectinated setae; (6) cerci with short spines on all segments (fig. 72 in Nieto 2008); (7) terminal filament with spines on all segments.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFAD0845FE25D6E9FC8DFCD7.taxon	discussion	Comments Callibaetis sellacki is recorded for the first time from Brazil; the forewing colour pattern allows quick identification of this species. The Brazilian specimen was collected in a lake at an altitude of 1043 m.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFAD0845FE25D6E9FC8DFCD7.taxon	materials_examined	Material examined Three male imagos and one female imago, ARGENTINA, Buenos Aires, Tandil, A ◦ Quequén Chico, 6 / i / 1983, Domínguez col. (INPA). Female imago, BRAZIL, São Paulo, Jundiaí, Serra do Japií, Lake near two houses, 14 / vii / 2009, Brito, P. col. (INPA).	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFAD0845FE25D6E9FC8DFCD7.taxon	distribution	Distribution Argentina, Chile and Brazil: São Paulo state, Jundiaí county.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFAF0845FEEBD70BFD66F9A7.taxon	diagnosis	Diagnosis Female imago. (1) Forewing hyaline, except C, Sc, R 1 areas, usually with hyaline cross veins in costal area (fig. 152 in Needham & Murphy 1924); (2) marginal intercalary veins single (fig. 152 in Needham & Murphy 1924); (3) costal process of hind wing rounded (fig. 152 a in Needham & Murphy 1924); (4) body covered with red spots.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFAF0845FEEBD70BFD66F9A7.taxon	discussion	Comments The diagnosis above, based on literature, is adequate to identify the female imago, although a revision is necessary since the description and illustration include few details.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFAF0845FEEBD70BFD66F9A7.taxon	materials_examined	Material examined No types or specimens were examined; the diagnosis was based on the literature.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFAF0845FEEBD70BFD66F9A7.taxon	distribution	Distribution Brazil: Mato Grosso do Sul state, Corumbá county.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFAE0844FDB2D4EFFBF2FB37.taxon	diagnosis	Diagnosis Male imago. (1) Wings hyaline; (2) marginal intercalary veins paired; (3) costal process of hind wing rounded; (4) abdominal sterna with one blackish mark anterolaterally. Female imago. (1) Forewing hyaline, except C, Sc, R 1 areas, pigmentation near or touch R 2 (fig. 73 in Nieto 2008); (2) marginal intercalary veins paired (fig. 73 in Nieto 2008); (3) costal process of hind wing rounded (fig. 74 b in Nieto 2008); (4) abdominal sterna covered with red spots. Mature nymph. (1) Distal margin of labrum with small, subquadrangular medial emargination (fig. 76 a in Nieto 2008); (2) distal margin of labrum with simple spine-like setae (fig. 76 b in Nieto 2008); (3) maxillary palp subequal in length to galealacinia (fig. 80 in Nieto 2008); (4) glossa subequal in length than paraglossa; (5) trifid spine-like setae near ventral margin of forefemur; (6) cerci with short spines on all segments (Figure 87 in Nieto 2008); (7) terminal filament with spines on all segments.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFAE0844FDB2D4EFFBF2FB37.taxon	materials_examined	Material examined No types or specimens were examined; the diagnosis was based on the literature.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFAE0844FDB2D4EFFBF2FB37.taxon	distribution	Distribution Argentina, Uruguay and Brazil: Rio Grande do Sul state, Porto Alegre county.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFAE083FFDB8D16BFBF0FE4C.taxon	diagnosis	Diagnosis Male imago. (1) Forewing hyaline, sometimes with stigmatic area pigmented. Female imago. (1) Forewing hyaline, except C, Sc, R 1 areas (fig. 2 in Gillies 1990); (2) marginal intercalary veins paired (fig. 2 in Gillies 1990); (3) costal process of hind wing pointed (fig. 3 in Gillies 1990); (4) hind wing with 15 – 17 cross veins (fig. 3 in Gillies 1990).	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFAE083FFDB8D16BFBF0FE4C.taxon	materials_examined	Material examined No types or specimens were examined; the diagnosis was based on the literature.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFAE083FFDB8D16BFBF0FE4C.taxon	discussion	Comments Even though the male imago is described, the large variation presented by Gillies (1990) does not allow a reliable specific identification. Several synonymies were established considering mainly the alar pigmentation. To provide a useful diagnosis it will be necessary to re-evaluate the types and analyse additional specimens from the type locality.	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
038F4646FFAE083FFDB8D16BFBF0FE4C.taxon	distribution	Distribution Argentina, Paraguay and Brazil: São Paulo state, São Paulo county. Key to identify the male imagos of Callibaetis from Brazil ∗	en	Cruz, Paulo Vilela, Salles, Frederico Falcão, Hamada, Neusa (2013): Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil. Journal of Natural History (J. Nat. Hist.) 48 (11 - 12): 591-660, DOI: 10.1080/00222933.2013.791883, URL: https://www.mendeley.com/catalogue/92521cd9-194d-3cbf-906c-7301d6990ad9/
