Etisus laevimanus   Randall,  1840 (Crab)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Arthropoda
Class: Malacostraca
Order:Decapoda
Family:Xanthidae

Image copyrights: NIO, Goa

Description
Size: Length of carapace 28 mm; breadth of carapace 44 mm

Color: Patchy orange and white, fingers of chelipeds black

Anterior part distinctly lobulated; Gastric region well defined on all sides; branchio-hepatic regions with three lobules following the antero-lateral margins. Antero-lateral border with 4 broad teeth (exclusive of the external orbital angle), the last two of which culminate in procurved points. The front is cleft in the middle line by a groove, its free edge is bow-shaped. The tooth of the inner angle of the lower edge of the orbit is blunt, and it comes into contact with the eave of the orbit beyond the tip of the process of the basal joint of the antenna. Chelipeds in the adult male about twice and a half, in the adult female a little less than twice the length of the carapace; the wrist has a blunt spine at the inner angle, otherwise they are smooth and unsculptured. Legs with both edges of all the long joints hairy, most so on the lower edge of the dactylus and on the upper edge of the other joints. The upper edge of the propodite and dactylus is also sharply granular, but there are no spines.

This species occurs in both live and dead corals in large numbers. Multitudes of this crab can be seen in exposed reefs during low tide, 6 morphs (Polymorphism) were observed in this species.


Synonym (s)
Etisus laevimanus Randall, 1839
Etisus laevimanus Haswell, 1882
Chlorodopsis espinosus Borradaile, 1902
Etisus convexus Stimpson, 1858
Etisus macrodactylus Bianconi, 1851
Etisus macrodactylus Lucas, in Jacquinot & Lucas, 1853
Etisus maculatus Heller, 1861

Common Name (s)
Economic Importance and Threats

Ecology
Habitat:  Benthic, Reef Associated

Biogeography


• Gujarat, Gulf of Kachchh (Lat: 22.6) (Long: 69.5) INDIA
• Maharashtra, Mumbai (Lat: 18.98) (Long: 72.83) INDIA
• Tamil Nadu, Gulf of Mannar INDIA
• Lakshadweep INDIA
• Andaman and Nicobar Islands INDIA
• Red Sea
• INDIA
• Maharashtra, Mumbai INDIA
• Gujarat, Okha INDIA
• Karachi PAKISTAN
• Persian Gulf
• Andaman and Nicobar Islands, Andamans INDIA
• MAURITIUS
• Tamil Nadu, Chennai INDIA
• Andaman and Nicobar Islands, South Andaman, Aberdeen Bay 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
  • Chhapgar, BF (1957) Marine crabs of Bombay state Contribution No. 1 of the Taraporevala Marine Biological Station Marine Biological Station, Department of fisheries, Bombay 89 pp Available at - NIO, Goa
  • 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
  • Hussain, SM Brief report on biodiversity in the coastal areas of Pakistan p 113
  • Integrated Taxonomic Information System (ITIS) Available at - http://www.itis.gov.
  • Subba Rao, NV and Sastry, DRK (2005) Fauna of Marine National Park, Gulf of Kuchchh (Gujarat) ZSI 79 pp Available at - NCL, Pune
  • 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 - http://www.nio.org/Biology/brachyuran/index.html
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • Marine Biological Station, Chennai, Tamil Nadu (2003) Checklist of marine fauna of Tamil Nadu Department of Environment, Government of Tamil Nadu Available at - http://tnenvis.nic.in
  • Sealifebase Available at - http://www.sealifebase.org/
  • Gokul, A and Venkataraman, K (2005) Status and biology of coral associated Xanthid crabs in Gulf of Mannar Biosphere Reserve Proceedings of the National Seminar on Reef Ecosystem Remediation SDMRI Special Research Publication No.9 142-147 Available at - http://www.sdmri.org/reports/proceedings%202005%20-%20sdmri.pdf
  • 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 - http://www.sdmri.org/reports/proceedings%202005%20-%20sdmri.pdf
  • 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 - http://eprints.cmfri.org.in/911/1/Article_11.pdf
  • 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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