Plagusiidae
Introduction 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 family Plagusiidae includes the subfamily Plagusiinae, comprising the genera ''Percnon'' and ''Plagusia'', which constitute a widespread group of litophilic, intertidal and subtidal crabs that are notorious for their speed and their agility.Six genera are included in the family:*''Davusia'' Guinot, 2007*''Euchirograpsus'' H. Milne-Edwards, 1853*''Guinusia'' Schubart & Cuesta, 2010*''Miersiograpsus'' Türkay, 1978*''Percnon'' Gistel, 1848*''Plagusia'' Latreille, 1804
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