Callibaetis sellacki (Weyenbergh)

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 : 650-652

Callibaetis sellacki (Weyenbergh)

( Figure 27 )

Cloe sellacki Weyenbergh, 1883, p. 164 .

Cloe lorentzii Weyenbergh, 1883, p. 167 .

Callibaetis sellacki Eaton, 1885, p. 198 ; Gillies, 1990; Nieto, 2008; Domínguez et al., 2006, p. 116.

Callibaetis trifasciatus (partim) Navás, 1915b, p. 120.

Callibaetis fasciatus Ulmer, 1921, p. 246 .

Callibaetis lineatus Navás, 1932, p. 82 .

Known stages: I ♀ ♂, N

Diagnosis

Male imago. (1) Forewing with two reddish brown bands, second band parallel to posterior margin of wing ( Figure 27D ); (2) marginal intercalary veins paired ( Figure 27D ); (3) hind wing with 15–30 cross veins ( Figure 27E ); (4) costal process of hind wing compound ( Figure 27E ); (5) abdominal sterna washed with red spots with one mark anterolaterally; (6) forceps segment I wide at base, segment III elongate ( Figure 27C ).

Female imago. (1) Forewing with two reddish bands, second parallel to posterior margin of wing ( Figure 27G ); (2) marginal intercalary veins paired ( Figure 27G ); (3) hind wing with 15–30 cross veins ( Figure 27H ); (4) costal process of hind wing compound ( Figure 27H ); (5) abdominal sterna, medially with one pair of light brown marks ( Figure 27I ); (6) abdominal terga covered by red spots with one mark anterolaterally ( Figure 27F ).

Mature nymph. (1) Labrum with deep medial emargination, distal margin with long and simple spine-like setae (fig. 61a in Nieto 2008); (2) maxillary palp longer than galea-lacinia (fig. 65 in Nieto 2008); (3) glossa subequal in length than paraglossa (fig. 66a 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.

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.

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) .

Distribution

Argentina, Chile and Brazil: São Paulo state, Jundiaí county.

Figures

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.