Plagusiidae

The Plagusiidae are a family of crabs, formerly treated as a subfamily of the family Grapsidae, but have since been considered sufficiently distinct to be a family in their own right. The Plagusiidae family includes the Plagusiinae subfamily, comprising the genera Percnon and Plagusia, which constitute a widespread group of litophilic, intertidal and subtidal crabs that are notorius for their speed and their agility.

Six genera are included in the family: