Metopograpsus messor   (Forskal,  1775) (Crab)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Arthropoda
Class: Malacostraca
Order:Decapoda
Family:Grapsidae

Image copyrights: digitalarchives.tw

Description
Size: Length of carapace: 15 mm; breadth of carapace: 19 mm; breadth of front: 11 mm.

Color: Dark bottle-green; the claws in some adult males are a brilliant violet, in others bright orange, dull in the female; the legs are striped with alternate light and dark bands.

Walking legs shorter, dactylus nearly as long as propodus; lateral margin markedly convergent posteriorly; last segment of male abdomen triangular.

Carapace about four-fifths as long as broad, the sides distinctly convergent posteriorly. There are some fine transverse markings on the post-frontal region. The front is about three-fifths the greatest breadth of the carapace; its free edge is sinuous and thin, but hardly laminar. The orbits are little oblique, the inner angle of their lower border being denticulate. The finger of the chelipeds are not much longer than the upper border of the palm. In the last three pairs of legs the greatest breadth of the merus is half its length. The terminal segment of the male abdomen is simply triangular. The male abdomen narrows gradually from the base to the terminal segment. The anterior male abdominal appendages are in the form of a brown chitinous tube with its tip slightly bilobed and straw colored. Both the borders bear hairs at the distal end color dark bottle-green; the claws in some adult males are a brilliant violet, in others bright orange, dull in the female; the legs are striped with alternate light and dark bands.
The male abdomen narrows gradually from the base to the terminal segment.
The anterior male abdominal appendages are in the form of a brown chitinous tube with its tip slightly bilobed and straw-colored. Both the borders bear hairs at the distal end.
The single arched, deep transverse groove of the middle of carapace and broad front with beaded free frontal edge separates the Metopograpsus messor from Metopograpsus maculatus, the other known Indian species of the genus.


Synonym (s)
Cancer messor Forskal, 1775
Metopograpsus messor de Man, 1887
Metopograpsus messor Alcock, 1900
Cancer messor Forskal, 1818
Metopograpsus messor Chakraborty, Choudhury & Deb, 1986
Grapsus (Pachygrapsus) aethiopicus Hilgendorf, 1869
Grapsus gaimardi Audouin, 1826

Common Name (s)
Economic Importance and Threats

Ecology
Habitat:  Demersal, Estuarine, Rocky, Coastal

Biogeography


• West Coast INDIA
• Lakshadweep INDIA
• Andaman and Nicobar Islands INDIA
• Red Sea
• INDIA
• MALAYSIA
• Maharashtra, Mumbai INDIA
• Gujarat, Okha INDIA
• Gujarat, Umarsadi INDIA
• Orissa, Chilika Lake INDIA
• Arabian Sea
• West Bengal, Sagar Island INDIA (Record: 31/07/1974, 23/12/1987)
• West Bengal, Raichak INDIA (Record: 07/12/1983)
• West Bengal, Basirhat INDIA (Record: 05/09/1984)
• West Bengal, Geonkhali INDIA (Record: 22/03/1985)
• West Bengal, Gadiara INDIA (Record: 04/01/1989)
• Orissa INDIA
• Andhra Pradesh INDIA
• Tamil Nadu INDIA
• Kerala INDIA
• Karnataka INDIA
• Maharashtra INDIA
• SRI LANKA
• BANGLADESH
• Tamil Nadu, Gulf of Mannar INDIA
• Andaman and Nicobar Islands, North Reef Island INDIA
• Karnataka INDIA (Record: 2001-2007)
• East Coast INDIA
• Tamil Nadu, Pulicat Lake (Lat: 13.41) (Long: 80.05) INDIA
• Tamil Nadu, Pulicat Lake (Lat: 13.91) (Long: 80.31) INDIA
• Orissa, Chilika Lake (Lat: 19.46) (Long: 85.1) INDIA
• Orissa, Chilika Lake (Lat: 13.91) (Long: 80.31) INDIA
• Kerala, Vembanad Lake (Lat: 9.5) (Long: 76.21) INDIA
• Kerala, Vembanad Lake (Lat: 10.33) (Long: 76.83) INDIA
• West Bengal (Lat: 21.16) (Long: 85.83) INDIA
• West Bengal (Lat: 21.63) (Long: 89.83) INDIA
• West Bengal, Kolkata INDIA
• West Bengal, South 24 Parganas INDIA
• West Bengal, North 24 Parganas 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 - 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
  • Digitalarchives.tw Available at - http://catalog.digitalarchives.tw/dacs5/System/Main.jsp
  • 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
  • DEB, M (1995) Crustacea: Brachyura Wetland ecosystem series 1: Fauna of Chilka Lake ZSI, Calcutta 345-366 Available at - NIO, Goa
  • Ghosh, SK (1995) Crustacea: Decapoda: Grapsidae Estuarine ecosystem series, Part 2: Hugli Matla Estuary ZSI, Calcutta 229-248 Available at - NIO, Goa
  • 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
  • Rao, GC; Rao, DV and Devi, K (1994) A faunal exploration of the North Reef Island sanctuary, North Andaman Journal of the Andaman Science Association Andaman Science Association, Port Blair 10(1&2) 68-81 Available at - NIO, Goa
  • Dineshbabu, AP; Durgekar, RN and Zacharia, PU (2011) Estuarine and marine decapods of Karnataka inventory Fishing Chimes Mr.J.V.H. Dixitulu 30 (10-11) 20-24 Available at - http://eprints.cmfri.org.in/7950/1/Dineshbabu-Fishing_Chimes_30(10%2611).pdf
  • Roy, MKD and Nandi, NC (2008) Brachyuran biodiversity of some selected brackishwater lakes of India Proceedings of Taal2007: The 12th World Lake Conference 496-499 Available at - wldb.ilec.or.jp/data/ilec/wlc12/C-%20Biodiversity/C-20.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
  • Roy, MKD and Nandi, NC (2008) Checklist and distribution of Brachyuran crabs of West Bengal, India Journal of Environment and Sociobiology Social Environmental and Biological Association, Kolkata, India 5(2) 191-214 Available at - NIO,Goa
  • Roy, MK (2010) Diversity and Distribution of Crustacea Fauna in wetlands of West Bengal Journal of Environment and Sociobiology Social Environmental and Biological Association, Kolkata, India 7(2) 147-187 Available at - NIO,Goa

Page last updated on:2011-11-09

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