Entoniscidae

The Entoniscidae  are a family of marine isopod crustaceans in the suborder Cymothoida. Members of this family are parasites of brachyuran and anomuran crabs, living in their hosts' haemocoel. A small chitinised hole develops through the host's exoskeleton through which the isopod can communicate with the environment. The female isopod bears little resemblance to any free-living isopod, but the morphology of the larvae show their taxonomic affiliations.

Genera

 * Achelion Hartnoll, 1966
 * Cancrion Giard & Bonnier, 1886
 * Diogenion Codreanu, Codreanu & Pike, 1960
 * Entione Kossmann, 1881
 * Entionella Miyashita, 1941
 * Entoniscoides Miyashita, 1940
 * Entoniscus Müller, 1862
 * Grapsion Giard & Bonnier, 1886
 * Micippion Shiino, 1942
 * Paguritherium Reinhard, 1945
 * Pinnotherion Giard & Bonnier, 1889
 * Portunion Giard & Bonnier, 1886
 * Priapion Giard & Bonnier, 1888
 * Synalpheion Coutière, 1908
 * Tiarinion Shiino, 1942
 * Xanthion Shiino, 1942