Hyastenus planasius   (Adams & White,  1848) (Crab)
Organism information awaits expert curation
Class: Malacostraca

Image copyrights: FLMNH

Size: Length of carapace (without rostrum) 25 mm; breadth of carapace 20 mm; length of rostrum 11 mm; length of cheliped 36 mm; length of second walking leg 50 mm.

Color: Ashy grey

Gastric region of carapace without tubercles. No intestinal spine. Carapace elongate-ovate, its surface smooth and polished anteriorly, finely granulose posteriorly and with scattered tufts of hairs. The rostrum is formed by two parallel spines, the tips of which are somewhat incurved, and the length of which is about one-sixth that of the carapace proper. The legs are tomentose with additional long scattered setae. The chelipeds small, slender, equal in size, covered with scattered long stout hairs. The first ambulatory legs are markedly the longest, being half again as long as the carapace and rostrum. The dactyli are short, recurved and serrated posteriorly.

Synonym (s)
Pisa planasia Adams and White, 1848
Pisa planasius White, 1847

Common Name (s)
Economic Importance and Threats

Habitat:  Reef Associated, Rocky


• West Coast INDIA
• Maharashtra, Mumbai INDIA
• Gujarat, Okha INDIA
• Mergui MYANMAR
• Gujarat, Okha Reef INDIA
• Arakan Coast MYANMAR

Literature Source(s)
  • 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
  • Florida Museum of Natural History Available at - http://www.flmnh.ufl.edu/
  • 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
  • Gopalakrishnan, P (1970) Some observations on the shore ecology of the Okha Coast Journal of the Marine Biological Association of India Cochin, India 120(1&2) 15-34 Available at - NIO, Goa

Page last updated on:2011-02-15

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