Pseudozius caystrus   (Adams & White,  1849) (Crab)
Organism information awaits expert curation
Class: Malacostraca

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Anterolateral borders cut into triangular lobes. Carapace nearly flat, the anterolateral borders shorter than the posterolateral and divided into four shallow lobes; the first two of which are rounded and almost confluent.

Carapace transversely oval, depressed, smooth, almost flat behind the deflexed finely granular fronto-orbital region; no distinct regional boundaries. The anterolateral border is fairly sharp and is obscurely divided into four shallow lobes, the first two of which are rounded and almost confluent. Front between a third and a fourth the greatest breadth of the carapace, bluntly four-partite. Orbits with the margins entire, eyes small. The buccal cavern is distinctly narrower anteriorly than posteriorly. Cheliped unequal, very massive, quite smooth to the naked eye; two strongish tubercles at the inner angle of the wrist; fingers arched, pointed, in the adult male they meet only at tip. Legs smooth, dactyli furred, a few fine scattered silky bristles on the propodite.

Synonym (s)
Panopeus caystrus Adams and White, 1848
Panopeus caystrus Adams & White, 1849
Pseudozius microphthalmus Stimpson, 1858
Pseudozius planus Dana, 1852

Common Name (s)
Economic Importance and Threats

Habitat:  Rocky


• Maharashtra, Mumbai (Lat: 18.98) (Long: 72.83) INDIA
• Lakshadweep (Lat: 10.5) (Long: 73) INDIA
• West Coast INDIA
• Lakshadweep INDIA
• Andaman and Nicobar Islands INDIA
• Lakshadweep Islands (Lat: 8.28) (Long: 72.16) INDIA (Record: 01/1987-03/1987)
• Lakshadweep Islands (Lat: 11.68) (Long: 73.68) INDIA (Record: 01/1987-03/1987)

Literature Source(s)
  • Alcock, A (1968) Materials for a carcinological fauna of India the Brachyura Oxyrhyncha The Baptist Mission Press 1 1-456 Available at - Pune University, Pune
  • Nagabhushanam, AK and Krishnan, S (1993) Observations on the distribution of some of the marine organism inhabiting the inter-tidal zone along the western continental shelf of the Bay of Bengal, with particular reference to the Tamil Nadu coastal strip Records of the Zoological Survey of India 93(3-4) 449-490 Available at - ZSI, Pune
  • Simoes, N; Apel, M and David, AJ (2001) Intertidal habitats and decapod faunal assemblages (Crustacea: Decapoda) of Socotra Island, Republic of Yemen Hydrobiologia Kluwer Academic Publishers 449 81-97
  • 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 -
  • Available at -
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) 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
  • Rao, GS; Suseelan, C and Kathirvel, M (1989) Crustacean resources of the Lakshadweep islands Marine living resources of the union territory of Lakshadweep: An indicative survey with suggestions for development Bulletin of Central Marine Research Institute CMFRI 43 72-76 Available at -

Page last updated on:2011-04-21

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