About Orisarma dehaani (H.Milne Edwards, 1853)
Orisarma dehaani is a mudflat crab that belongs to the Sesarmidae family, subfamily Sesarminae, and is endemic to East Asia. It typically inhabits mangrove swamps, and its common name in Japan is kurobenkeigani. This species has an uneven carapace split into four frontal lobes. Its walking legs are covered in thick, long setae, also called hairs. The palm surfaces of its rough, granular chelipeds, or claws, bear tubercles.