Cymadusa, Savigny, 1816

Appadoo, C & Myers, A. A., 2004, Corophiidea (Crustacea: Amphipoda) from Mauritius, Records of the Australian Museum 56 (3), pp. 331-362 : 343

Key to male Cymadusa of Mauritius

1 Gnathopod 2 larger than gnathopod 1 in both sexes ...................................................................... 2

—— Gnathopod 1 and 2 similar in size and form in both sexes ........................ Cymadusa mauritiensis

2 Coxa 1–4 distal margin with one group of setae or without setae ................................................. 3

—— Coxa 1–4 distal margin lined with dense slender setae, reaching up to half length of coxa ........................................................................................ Cymadusa filosa

3 Gnathopod 1 carpus elongate, slightly less than three times as long as broad, palm with a deep triangular excavation. Gnathopod 2 propodus with a deep round-bottomed excavation; dactylus short, robust with a serrated rounded lobe at tip ...................................................... Cymadusa cavimana

—— Gnathopod 1 carpus not elongate, palm without excavation. Gnathopod 2 palm with small subrectangular process and straight margin; dactylus medially expanded, distally tapered .......................... Cymadusa microphthalma