Leucothoidae, Dana, 1852

White, Kristine N., 2011, A taxonomic review of the Leucothoidae (Crustacea: Amphipoda) 3078, Zootaxa 3078 (1), pp. 1-113 : 13

Key to genera of Leucothoidae

1 Extreme sexual dimorphism; coxa 1 reduced; mouthparts reduced in adult males................................... 2

- Moderate to no sexual dimorphism; coxae 1–4 relatively equal in widths; mouthparts well developed................... 4

2 Eyes with 7 ocelli or 10 or more ocelli; coxa 1 greatly reduced; gnathopod 1 carpus thin or gnathopod 1 absent........... 3

- Eyes with 9 ocelli; coxa 1 moderately reduced; gnathopod 1 carpus basally inflated....................... Nepanamixis

3 Gnathopod 1 absent in post-transformational molts, maxilliped inner plates often vestigial................... Paranamixis

- Gnathopod 1 present in post-transformational molts, apically fused maxilliped inner plates.................... Anamixis

4 Minimal to no sexual dimorphism; maxilliped outer plates reaching less than halfway up apex of palp article 1.... Leucothoe

- Moderate sexual dimorphism; maxilliped outer plates reaching apex of palp article 1..................... Paraleucothoe