Ericthonius

Appadoo, C & Myers, A. A., 2004, Corophiidea (Crustacea: Amphipoda) from Mauritius, Records of the Australian Museum 56 (3), pp. 331-362 : 356

Key to male Ericthonius of Mauritius

1 Gnathopod 1 basis without knob-like process on posterior margin; coxa 2 broader than deep ................................................................................................................ 2

—— Gnathopod 1 basis with knob-like process on posterior margin; coxa 2 deeper than broad ........................................................................... Ericthonius brasiliensis

2 Pereopod 5 basis with weakly-developed lobe on posterodistal margin .............................................................................................................................................. 3

—— Pereopod 5 basis with strongly produced lobe, reaching up to end of ischium on posterodistal margin ................................................................... Ericthonius pugnax

3 Gnathopod 2 basis uniformly broad, carpus posterior margin bearing robust setae, propodus subequal to carpus, enlarged and axe-shaped ..................................................................................................... Ericthonius latimanus

—— Gnathopod 2 basis bottle-shaped; carpus posterior margin without robust setae, propodus shorter than carpus, posterior margin weakly sinuous .............................................................................................. Ericthonius punctatus