The Plagusiidae are a
family
Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...
of
crab
Crabs are decapod crustaceans of the infraorder Brachyura (meaning "short tailed" in Greek language, Greek), which typically have a very short projecting tail-like abdomen#Arthropoda, abdomen, usually hidden entirely under the Thorax (arthropo ...
s, formerly treated as a
subfamily
In biological classification, a subfamily (Latin: ', plural ') is an auxiliary (intermediate) taxonomic rank, next below family but more inclusive than genus. Standard nomenclature rules end botanical subfamily names with "-oideae", and zo ...
of the family
Grapsidae
The Grapsidae are a family (biology), family of crabs known variously as marsh crabs, shore crabs, or talon crabs. The family has not been confirmed to form a monophyletic group and some Taxon, taxa may belong in other families. They are found al ...
, but have since been considered sufficiently distinct to be a family in their own right.
The family Plagusiidae used to include a 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 currently included in the family:
*''
Caligoplagusia''
Fujita & Narusa, 2014
*''
Davusia''
Guinot, 2007
*''
Euchirograpsus''
H. Milne-Edwards, 1853
*''
Guinusia''
Schubart & Cuesta, 2010
*''
Miersiograpsus''
Türkay, 1978
*''
Plagusia''
Latreille, 1804
References
Grapsoidea
Decapod families
{{Grapsoidea-stub