''Percnon'' is a
genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...
of
crab
Crabs are decapod crustaceans of the infraorder Brachyura, which typically have a very short projecting "tail" (abdomen) ( el, βραχύς , translit=brachys = short, / = tail), usually hidden entirely under the thorax. They live in all the ...
s. It is "doubtfully placed" in the family
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 family Plagusiidae includes the subfamily Plagusiinae, com ...
,
and it has also been included in the family
Grapsidae
The Grapsidae are a 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 taxa may belong in other families. They are found along the shore among rocks ...
.
Species
Seven species are recognised:
*''
Percnon abbreviatum''
(Dana, 1851)
*''
Percnon affine''
( Milne-Edwards, 1853)
*''
Percnon gibbesi
''Percnon gibbesi'' is a species of crab. It is one of at least two species commonly called "Sally Lightfoot" (the other being the semi-terrestrial ''Grapsus grapsus'' from the Pacific coast of the Americas), and is also referred to as the ''nim ...
''
( Milne-Edwards, 1853)
*''
Percnon guinotae
''Percnon'' is a genus of crabs. It is "doubtfully placed" in the family Plagusiidae, and it has also been included in the family Grapsidae.
Species
Seven species are recognised:
*'' Percnon abbreviatum'' (Dana, 1851)
*'' Percnon affine'' ( Mil ...
''
Crosnier, 1965
*''
Percnon pascuensis
''Percnon'' is a genus of crabs. It is "doubtfully placed" in the family Plagusiidae, and it has also been included in the family Grapsidae.
Species
Seven species are recognised:
*'' Percnon abbreviatum'' (Dana, 1851)
*'' Percnon affine'' ( Mil ...
''
Retamal, 2002
*''
Percnon planissimum''
( Herbst, 1804)
*''
Percnon sinense
''Percnon'' is a genus of crabs. It is "doubtfully placed" in the family Plagusiidae, and it has also been included in the family Grapsidae.
Species
Seven species are recognised:
*'' Percnon abbreviatum'' (Dana, 1851)
*'' Percnon affine'' ( Mil ...
''
Chen, 1977
References
Grapsoidea
Taxa named by Johannes von Nepomuk Franz Xaver Gistel
Crustacean genera
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