Pachygrapsus minutus   A. Milne Edwards,  1873 (Crab)
Organism information awaits expert curation
Class: Malacostraca

Image copyrights: Guam

The lateral borders of carapace not arched; not tooth behind the external orbital angle. The striae of carapace smooth; wrist and palm of chelipeds not tubercular. A small species with the lateral borders extremely convergent backwards.

Carapace a good deal broader than long, its whole dorsal surface marked with fine transverse and oblique lines. The lateral borders are strongly convergent posteriorly and have no spine behind the acute outer orbital angle. Front about three-fifths the greatest breadth of the carapace, moderately deflexed, its free edge slightly sinuous. Orbits little oblique, their major diameter more than a third the breadth of the front, their lower border not denticulate. The chelipeds in the male are sub-equal and vastly more massive than the legs, and are about twice the length of the carapace and except for some squamiform markings on the arm are smooth. The two middle pairs of ambulatory legs are longest, being not twice the length of the carapace. In all the last three joints are bristly, and the merus has spine at the far end of the anterior border and two largish spines at the far end of the posterior border.

Synonym (s)
Sesarma murrayi Calman, 1909

Common Name (s)
Economic Importance and Threats

Habitat:  Reef Associated


• Lakshadweep INDIA
• Andaman and Nicobar Islands INDIA
• Tamil Nadu, Gulf of Mannar INDIA
• Tamil Nadu, Pulli Island INDIA
• Andaman and Nicobar Islands, Car Nicobar INDIA

Literature Source(s)
  • Kensley, B (1981) On the Zoogeography of Southern Afrian Decapod Crustacea, with a distributional checklist of the species Smithsonian Contributions to Zoology Smithsonian Institution Press, Washington, D.C. 338 23377 Available at - NIO, RC Kochi
  • Jeyabaskaran, R; Wafar, S and Wafar, M (2002) CD on Brachyuran Crabs of West Coast, India Available at -
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Florida Museum of Natural History Available at -
  • Dr. Ramesh, R; Dr. Nammalwar, P and Dr. Gowri, VS (2008) Database on coastal information of Tamil Nadu Report Submitted to Environmental Information System (ENVIS) Centre, Department of Environment, Government of Tamil Nadu Institute for Ocean Management, Anna University, Chennai, Tamil Nadu. Available at -
  • Deb, M and Rao, GC (1993) A check-list of the brachyuran crabs (Crustacea: Decapoda)of Bay islands Journal Of The Andaman Science Association Andaman Science association, Port Blair 8(1-2) 25-34 Available at - NIO, Goa
  • James, PSBR ; Thomas, PA ; Pillai, CSG and Achari Kumaraswamy, GP (1969) ´╗┐Catalogue of types and of sponges, corals, polychaetes, crabs and echinoderms in the reference collections of the Central Marine Fisheries Research Institute Bulletin of Central Marine Research Institute CMFRI, Cochin 7 1-66 Available at -

Page last updated on:2011-03-17

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