Ocypodidae

Ocypodidae is a family of semiterrestrial crabs that includes the ghost crabs and the fiddler crabs. Its members live along tropical and temperate shorelines around the world, and the family name comes from Ancient Greek words meaning swift and foot. Several genera once placed here, such as the Dotillidae and Macrophthalmidae, have been moved into separate families of the same superfamily, Ocypoidea, and in 2016 the old fiddler crab genus Uca was divided into thirteen genera. As currently arranged the family has four subfamilies, about thirteen living genera and around 180 described species as of 2020. Most of its species are fiddler crabs, and the exceptions are the ghost crabs of the genus Ocypode and the mangrove crabs of the genus Ucides, which includes the swamp ghost crab Ucides cordatus.