Callibaetis fasciatus (Pictet)

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), pp. 591-660 : 610-612

Callibaetis fasciatus (Pictet)

( Figure 9 )

Cloe fasciata Pictet, 1843, p. 262 .

Callibaetis trifasciatus Esben-Petersen, 1912, p. 339 .

Baetis gloriosus Navás, 1923, p. 2 .

Callibaetis gloriosus Navás, 1930b, p. 360 .

Callibaetis fasciatus Eaton, 1885, p. 197 ; Gillies, 1990; Domínguez et al. 2006, p. 113.

Known stages: I ♀ ♂

Diagnosis

Male imago. (1) Dorsal portion of turbinate eyes oval ( Figure 9A ); (2) forewing with three or four transverse pigmented bands ( Figure 9C ); (3) marginal intercalary veins paired ( Figure 9C ); (4) hind wing with many cross veins and three complete longitudinal veins ( Figure 9D, E ); (5) hind wing with small pointed costal projection ( Figure 9D, E ); (6) forceps segment I wide at base ( Figure 9F ); (7) abdominal sterna surface with two pair of medial brown marks ( Figure 9G ).

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.

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 9C ) and those of C. sellacki have only two ( Figure 27G ).

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) .

Distribution

Argentina, Chile, Uruguay and Brazil: Rio Grande do Sul state, Derrubadas county; Paraná state, Rio Branco do Sul county.

Figures

Figure 9. (colour online) Callibaetis fasciatus. (A) male imago dorsal view; (B) male imago lateral view; (C) male imago forewing; (D) detail of male imago hind wing; (E) variation of male imago hind wing; (F) genitalia; (G) male imago ventral view.

Figure 27. (colour online) Callibaetis sellacki. (A) male imago dorsal view; (B) male imago lateral view; (C) genitalia; (D) male imago forewing; (E) detail of male imago hind wing; (F) female imago dorsal view; (G) female imago forewing; (H) detail of female imago hind wing; (I) female imago ventral view.