Tags: Crustacean.
Crangonyctidae is a family of cave-dwelling freshwater amphipod crustaceans. It contains the following genera:Amurocrangonyx Sidorov & Holsinger 2007 Bactrurus Hay 1902Crangonyx Bate 1859Lyurella Derzhavin 1939† Palaeogammarus Zaddach 1864Stygobromus Cope 1872Stygonyx Bousfield & Holsinger 1989↑ ↑