Cyclax suborbicularis   (Stimpson,  1858) (Crab)
Organism information awaits expert curation
Class: Malacostraca

Image copyrights:

Surface of carapace closely beaded with some larger spinules regularly interspersed; ambulatory legs hairy with short claw-like dactyli which decrease gradually in length.

Carapace sub-circular, its surface closely beaded, with some larger spines regularly interspersed. The lateral margin is armed with six large spines, the first of which is often bifid. The rostrum consists of two triangular teeth, which although broader are not longer than the spines of the laternal margin. The supra-ocular cave has its angels slightly produced and spiniform. The broad short basal antennal joint ends in two stout teeth, and has a third denticle on its outer margin. The chelipeds in the female and young male are slightly more slender that the other legs, and are as long as the carapace or as the 2nd pair of trunk legs except the dactylus. Chelipeds have a long slender smooth palm, nearly twice the length of the fingers. The ambulatory legs are hairy, have short claw-like dactyli, and decrease gradually in length.

The eyes are of moderate length and are retractile into orbits formed as in Schizophrys.

Synonym (s)
Cyclomaia suborbicularis Stimpson, 1858

Common Name (s)
Economic Importance and Threats

Habitat:  Reef Associated, Rocky


• Tamil Nadu, Gulf of Mannar INDIA
• Lakshadweep INDIA
• Andaman and Nicobar Islands INDIA
• Red Sea
• East Coast INDIA
• Tamil Nadu INDIA

Literature Source(s)
  • 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 -
  • Available at -
  • Marine Biological Station, Chennai, Tamil Nadu (2003) Checklist of marine fauna of Tamil Nadu Department of Environment, Government of Tamil Nadu Available at -
  • Sealifebase Available at -
  • 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 -
  • 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
  • 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

Back to Search