Percnon
Encyclopedia
Percnon is a genus
of crab
s. It is currently "doubtfully placed" in the family Plagusiidae
, and it has also been included in the family Grapsidae
.
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...
of crab
Crab
True crabs are decapod crustaceans of the infraorder Brachyura, which typically have a very short projecting "tail" , or where the reduced abdomen is entirely hidden under the thorax...
s. It is currently "doubtfully placed" in the family Plagusiidae
Plagusiidae
Plagusiidae is a family of crabs. It was formerly treated as a subfamily of the family Grapsidae, but has since been considered sufficiently distinct to be a family in its own right.Five genera are included in the family:*Davusia Guinot, 2007...
, and it has also been included in the family Grapsidae
Grapsidae
Grapsidae is a family of crabs known variously as marsh crabs, shore crabs or talon crabs. It is not confirmed that the family forms a monophyletic group and some taxa may belong in other families...
.
Species
Six species are currently recognised:- Percnon abbreviatum (Dana, 1851)
- Percnon affine (H. Milne-Edwards, 1853)
- Percnon gibbesiPercnon gibbesiPercnon gibbesi is a species of crab. It is one of at least two species commonly called "Sally Lightfoot" , and is also referred to as the nimble spray crab or urchin crab...
(H. Milne-Edwards, 1853) - Percnon guinotae Crosnier, 1965
- Percnon planissimum (Herbst, 1804)
- Percnon sinense Chen, 1977