Portunus samoensis   (Ward)  (Crab)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Arthropoda
Class: Malacostraca
Order:Decapoda
Family:Portunidae

Description
Carapace fairly convex, covered with sparse hairs not concealing the granulated area, its breadth about 1.66 times its length. A faint metagastric ridge recognizable. Following regions well defined-cardiac, lateral cardiac and branchial. Front cut into four teeth, median pair minute and its inner end deflexed; lateral tooth more prominent than median frontal and inner supra-orbital lobes. Supra-orbital border with two distinct clefts. Antero-lateral border divided into nine teeth, last being largest and spiny. First tooth blunt tipped and larger than following seven acute sub-equal teeth. Lower border of orbit with' V'-shaped cleft at the outer angle.
Chelipeds sub-equal, anterior border of merus with four and posterior border with two spines, both borders fringed with hairs. Upper surface of merus more or less granulated, a terminal spine on the ventral side of merus. Carpus with the usual spine to which joins a carina arising from the proximal end of the segment, another shorter carina arising from the proximal end of carpus but not reaching the distal end of the segment and not terminating in a spine. Propodus with seven distinct ridges, three on dorsal surface of which the innermost being granular, strongest and with a fringe of hairs along the inner side and terminating in a spine. Two ridges on the outer side of propodus, the lower entering the fixed finger. Two ridges on the inner side of propodus less distinct than those on the outer side. Dactylus longer than upper border of propodus.
Antero-external angle of merus of external maxilliped produced laterally. Penultimate segment of male abdomen longer than broad with its sides converging distally.


Synonym (s)
Monomia samoensis Ward, 1939
Portunus samoensis Stephenson and Campbell, 1959

Common Name (s)
Economic Importance and Threats

Ecology
Habitat:  Coastal

Biogeography


• Tamil Nadu, Hare Island INDIA
• Tamil Nadu INDIA

Literature Source(s)
  • 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 - http://eprints.cmfri.org.in/2394/1/Article_32.pdf
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • 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:2011-10-03

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