Actaea ruppelli orientalis   Odhner  (Crab)
Organism information awaits expert curation
Class: Malacostraca

Size: Width 36 mm; Length 32 mm

Carapace larger in size than in Actaea ruppelli with symmetrically disposed bundles of long, stiff hairs. Hairs are also present on the lobules or on the grooves separating them. Lobule 2M completely divided; other lobules are the same as on Actaea ruppelli. Ambulatory legs are densely fringed with long, stiff, brownish setae along both anterior and posterior edges.
First male pleopod stout, curved, gradually tapers apically, apex spoon-shaped, inner sub-apical border adorned with 17-20 setae of gradually increasing size. The sub-apical regions armed with scattered spinules.

Remarks: The granules on the carapace are less in number but larger, more prominent in size than Actaea ruppelli. The entire crab is more hairy; hairs are stiff, bristle-like, golden yellow to dark in adults and fainter in young ones. Few clusters of very long bristles present symmetrically on the surface of carapace and separates the variety orientalis from the species ruppelli.

Synonym (s)
Actaea ruppelli orientalis Odhner, 1925
Paractaea ruppelli orientalis Guinot, 1969

Common Name (s)
Economic Importance and Threats



• Andaman and Nicobar Islands, Andamans INDIA
• Tamil Nadu, Gulf of Mannar INDIA

Literature Source(s)
  • Deb, M (1989) Contribution to the study of Xanthidae: Actaeinae (Decapoda: Crustacea) of India Records of the Zoological Survey of India. Occasional Paper No. 117 ZSI, Calcutta 59 pp Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -

Page last updated on:2010-11-08

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