Caenis chamie Alba-Tercedor & Mosquera, 1999

Nascimento, Stênio R. S., Rodrigues, Jackson A. O., Ale-Rocha, Rosaly & Lima, Lucas R. C., 2022, New species and records of Caenidae Newman, 1853 (Insecta: Ephemeroptera) from Northeastern Brazil, Zootaxa 5133 (1), pp. 110-122 : 117-118

Caenis chamie Alba-Tercedor & Mosquera, 1999

( Figs 6E, F )

Caenis chamie Alba-Tercedor & Mosquera, 1999: 61 ; Lima et al. 2015a: 3; Lima & Boldrini, 2016: 3.

Distribution. Colombia. Brazil: states of Goiás, Pernambuco and Roraima. New record: Piauí State.

Material examined. 26 ♂ imagos, Brazil, Piauí State, Castelo do Piauí municipality, Rio Poti , S05°11’16.7”, W41°42’34.4”, 177 m a.s.l., 12.iii.2016, Lima, L. R . C. col. ( CEHJ). One nymph, Brazil, Piauí State, Castelo do Piauí municipality, Cachoeira das Arraias , S05°11’28.5”, W41°42’03.2”, 174 m a.s.l., 12.iii.2016, Lima, L. R .C. col. ( CEHJ). 14 ♂ imagos (light trap), Brazil, Piauí State, Alto Longá municipality, Longá River, Cachoeira da Campeira , S5°11’45.1” W42°15’33.9”, 177 m a.s.l., 27.iv.2017, Moreno, L.A.S. col. ( CEHJ) .

Comments. Caenis chamie can be characterized, among other characters, by the straight hind margin of penis, genital sclerites sclerotized and discernible, and styliger plate projected, covering entirely the penis (adapted from Alba-Tercedor & Mosquera 1999).

Figures

FIGURE 6. Male imagos, body dorsal view and genitalia ventral view: A–B, Brasilocaenis irmleri; C–D, B. elidioi; E–F, Caenis chamie; G–H, C. fittkaui. (Scale: Figs 5A, C, E, F = 1 mm; Figs 5B, D, F, H = 0.2 mm).