EthusidaeEthusidae 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.GeneraEthusa Roux, 1830Ethusina Smith, 1884Parethusa Chen, 1997Serpenthusa Naruse, Castro & Ng, 2009