Ethusidae is one of two extant families of crabs in the superfamily Dorippoidea. It contains four genera. Members of this family are found in marine environments at depths from 16m to 4,192m.EOL.org
Genera Ethusa Roux, 1830 Ethusina Smith, 1884 Parethusa Chen, 1997 Serpenthusa Naruse, Castro & Ng, 2009
References
Further reading Ng, Guinot & Davie (2008). Systema Brachyurorum: Part I. An annotated checklist of extant brachyuran crabs of the world. Raffles Bulletin of Zoology Supplement, n. 17 .