Species Factsheet

Percnon gibbesi


Complete name: Percnon gibbesi (H. Milne Edwards, 1853)
Taxonomy: Crustacea » Arthropoda » Malacostraca » Decapoda » Plagusiidae » Percnon gibbesi
Authors: B. S. Galil
Last updated: November 6th, 2006

Common Names

Sally lightfoot crab.


Percnon gibbesi (H. Milne Edwards, 1853)

Short Description

An agile, aposomatic mimetic crab. The carapace is 3 cm in diameter and brownish, it has golden yellow rings on joints of walking legs. Carapace disc-like, with tridentate front and antero-lateral margins with four acute teeth. All walking legs have a row of spines on anterior margin of merus. Chelipeds have spinose merus and carpus. The palm has a small pilose area proximally on inner surface and the groove is also pilose proximally on upper surface. It is active during daytime with feeding peaks at sunset. It is strictly herbivorous, using its small claws to pick off the fine film of algal growth.