Platypodia granulosa   (Ruppell,  1830) (Crab)
Organism information awaits expert curation
Class: Malacostraca

Image copyrights: Dr Leo W H Tan and Peter K L Ng

Regions of carapace thickly covered with granules. Anterolateral borders are well crested, with three closed clefts.

Closely resembles the Platypodia cristata and Platypodia semigranosa, but it differs most conspicuously in having no crest to the upper border of hand. The granulation of the carapace is not nearly so sharp-cut and pearl like.

Synonym (s)
Xantho granulosus Ruppell, 1830
Cancer limbatus H. Milne Edwards, 1834
Platypodia keelingi Tweedie, 1950
Xantho granulosa Ruppell, 1830

Common Name (s)
• Crested Reef Crab (English)
Economic Importance and Threats
Importance:  Dangers
(Poisonous. It is still not known how they accumulate the toxins, most of which are similar to those in puffer fishes (neurotoxins), or why they themselves are immune to it. These toxins cannot be destroyed by cooking, and are extremely potent. The toxins are in the flesh and cannot be transmitted if one is pinched by the claws. Most of poisonous crabs have very bright warning colours, and it is a good practice to avoid eating them.)

Habitat:  Reef Associated


• Andaman and Nicobar Islands, Andaman Islands (Lat: 12.5) (Long: 92.75) INDIA
• Lakshadweep INDIA
• Andaman and Nicobar Islands INDIA
• Tamil Nadu, Gulf of Mannar INDIA
• Red Sea
• Andaman and Nicobar Islands, Neill Island INDIA
• Andaman and Nicobar Islands, Ross Island INDIA
• Tamil Nadu INDIA

Literature Source(s)
  • Tikadar, BK; Daniel, A and Subbarao, NV (1986) Sea shore animals of Andaman and Nicobar Islands The Director, ZSI, Kolkatta 188 Available at - ZSI, Pune
  • Hussain, SM Brief report on biodiversity in the coastal areas of Pakistan p 113
  • Integrated Taxonomic Information System (ITIS) Available at -
  • Serene, R (1984) Crustaces decapodes brachyoures de l'Ocean Indien occidental et de la Mer Rouge. Xanthoidea: Xanthidae et Trapeziidae Faune Tropicale 24 1-349 Available at - Zoological Abstracts-Madagascar(1-500)
  • 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 -
  • Tan, LWH and Ng, PKL A guide to seashore life in Singapore Available at -
  • Roy, MKD and Nandi, NC (2005) Brachyuran diversity of coral reef ecosystems in India Proceedings of the National Seminar on Reef Ecosystem Remediation SDMRI Special Research Publication No.9 220-231 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
  • Sankarankutty, C. (1962) On Decapoda Brachyura from the Andaman and Nicobar Islands : 2. Family Xanthidae Journal of the Marine Biological Association of India The Marine Biological Association of India, Cochin, India 4(1) 121-150 Available at -
  • 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 -
  • Kathirvel, M (2009) Marine poisonous brachyuran crabs of India Fishing chimes 29(9) 24-29 Available at - NIO, Goa
  • Roy, MKD and Nandi NC (2007) Brachyuran diversity in coastal ecosystems of Tamil Nadu Journal of Environment and Sociobiology Social Environmental and Biological Association, Kolkata, India 4(2) 169-192 Available at - NIO,Goa

Page last updated on:2011-10-10

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