Cerapus Say, 1817

Valério-Berardo, Maria Teresa, Souza, Ana Maria Thiago De & Rodrigues, Carina Waiteman, 2008, Description of two new species of Ischyroceridae (Crustacea: Amphipoda) from the coast of Southeastern Brazil, Zootaxa 1857, pp. 55-65 : 56

Genus Cerapus Say, 1817

Diagnosis: (Modified from Lowry & Berents, 1996) Rostrum acute. Antenna 1, peduncle article 1 rectangular, not produced anterodistally or medially, without accessory flagellum. Gnathopod 2 of male adult, carpochelate, subchelate in female. Pereopods 3 to 7 with dactyli directed posteriorly. Pereopod 5 coxa in female larger than in male, without fringe of long setae; dactylus with large unguis and 1–2 small accessory spines. Dactyli of pereopods 6 and 7 with 1–2 small accessory spines. Pereopod 7 elongate, Pleopods 2 and 3 with inner rami reduced, 1-articulate. Uropod 2 with 1 ramus. Uropod 3 unirramous, ramus vestigial bearing recurved spines.