Macrophthalmus depressus   Ruppell,  1830 (Crab)
Organism information awaits expert curation
Class: Malacostraca

Image copyrights: NIO, Goa

Size: Length of carapace: 12 mm; breadth of carapace: 20 mm; breadth of front: 3mm.

Color: Greyish.

Carapace broader than long, tooth at anterolateral angle of carapace truncate and square cut; surface of palm of male smooth.
Carapace studded with minute granules not always plainly visible to the naked eye, its length in the male about two-thirds of its breadth. The lateral borders are parallel and the antero-lateral angle is rather a square-cut lobe than a tooth. Front, at its narrowest part, about and eighth the breadth of the carapace, longitudinally grooved, but its free edge is straight and not bilobed. Orbits little sinuous and little oblique, their upper border microscopically their lower border finely and evenly denticulate. Eyestalks slender, hardly curved, the eyes reach almost to the end of the orbital trenches. The chelipeds and legs are unarmed except for a small sub-terminal denticle on the anterior border of the meropodites of the first three pair of legs. The dactylus is more than two thirds the length of the palm, which is smooth and unsculptured. There is a molariform tooth near the basal end of the dactylus and a similar but less distinct and more oblique tooth on the immobile finger.

Synonym (s)
Macrophthalmus depressus Ruppell, 1830
Macrophthalmus depressus de Man, 1887
Macrophthalmus depressus Rice, 1975

Common Name (s)
Economic Importance and Threats

Habitat:  Estuarine, Muddy, Coastal


• Tamil Nadu, Pichavaram Mangrove Forest (Lat: 11.03) (Long: 79.78) INDIA
• Tamil Nadu, Parangipettai Coast (Lat: 11.48) (Long: 79.77) INDIA
• West Coast INDIA
• Gulf of Aden
• Maharashtra, Mumbai INDIA
• Gujarat, Kolak INDIA
• Red Sea
• Persian Gulf
• Pondicherry INDIA
• Tamil Nadu, Rameswaram Island INDIA
• West Bengal, Haldia INDIA (Record: 16/03/1985)
• West Bengal, Gosaba INDIA (Record: 27/05/1985)
• West Bengal, Sonakhali INDIA (Record: 29/05/1985)
• Tamil Nadu INDIA
• Maharashtra INDIA
• Tamil Nadu, Kundugal Point INDIA
• Tamil Nadu, Gulf of Mannar INDIA
• Palk Bay Lagoon INDIA
• Tamil Nadu, Manoli Island INDIA
• Gujarat, Jakhau-Babber Creek (Lat: 23.5) (Long: 68.6) INDIA (Record: 1999-2000)
• Gujarat, Sangi-Kharo Creek (Lat: 23.28) (Long: 68.51) INDIA (Record: 1999-2000)
• Gujarat, Medi-Sinthodi Creek (Lat: 23.45) (Long: 68.48) INDIA (Record: 1999-2000)
• Karnataka INDIA (Record: 2001-2007)

Literature Source(s)
  • Zoological Survey of India (Eds.) (1998) Fauna Of Mahanadi estuary, Orissa Estuarine ecosystem series no 3 ZSI, Kolkata 1-218 Available at - ZSI, Pune
  • Sethuramalingam, S and Khan, SA Brachyuran crabs of Parangipettai coast Available at - NIO, Goa
  • 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
  • Ramakrishna; Sarkar, J and Talukdar, S (2003) Marine invertebrates of Digha coast and some recomendations on their conservation Records of the Zoological Survey of India ZSI, Kolkata 101(3-4) 1 Available at - NCL, Pune
  • Litulo, C (2005) Population structure and reproduction of the hermit crab Dardanus deformis (Anomura: Diogenidae) in the Indian Ocean Journal of the Marine Biological Association of the United Kingdom 85(4) 883-887 Available at - Zoological Records(mozambique-marine)
  • 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
  • Vannini, M and Valmori, P (1981) Researches on the coast of Somalia. The shore and the dune of Sar Uanle. 31. Ocypodidae and Gecarcinidae (Decapoda Brachyura) Monitore Zoologico Italiano Supplemento 14 (14) 199-226 Available at - Zoological Records
  • Kathiresan, k (2000) A review of studies on Pichavaram mangrove, southeast India Hydrobiologia Kluwer Academic Publishers, Netherlands 430 108-205 Available at - NCL, Pune
  • 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 -
  • Bairagi, N (1995) Ocypodidae: Decapoda: Crustacea Estuarine ecosystem series, Part 2: Hugli Matla Estuary ZSI, Calcutta 263-287 Available at - NIO, Goa
  • 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 -
  • Sankarankutty, C (1966) On Decapoda Brachyura from the Gulf of Mannar and Palk Bay Proceedings of the Symposium on Crustacea Marine Biological Association of India, Mandapam Camp Part I 347-362 Available at -
  • Soundarapandian,P; John Samuel,N; Ravichandran,S and Kannupandi,T (2008) Biodiversity of crabs in the Pichavaram Mangrove environment, South East Coast of India International Journal of Zoological Research CASMB, Parangipettai, Tamil Nadu 4(2) 113-118 Available at -
  • Saravanakumar, A; Serebiah, JS; Thivakaran, GA and Rajkumar, M (2007) Benthic macrofaunal assemblage in the arid zone mangroves of Gulf of Kachchh – Gujarat Journal of Ocean University of China Ocean University of China 6(3) 303 -309 Available at -
  • 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 -

Page last updated on:2011-03-07

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