Entomonyx spinosus   Miers,  1884 (Crab)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Arthropoda
Class: Malacostraca
Order:Decapoda
Family:Majidae

Image copyrights: NIO, Goa

Description
Orbits are complete, their roof is formed by tubular supraocular eave, intercalated spine and postocular cup, and their floor formed by postocular cup and broad basal segment of antenna. Rostrum slightly deflexed or horizontal.

Carapace rather more than 25% longer than broad, with regions well defined. Its surface is regularly and sharply tubercular and is armed with two sharp spines. The rostrum consists of two straight sharp slightly diverging spines, which are about one fifth or one sixth the length of the carapace proper, and which in the male are slightly deflexed, but in the female are stronly deflexed. The basal joint of the antennae is broadly obtriangular; its antero-lateral angle is produced to aid in forming the floor of the orbit. This orbital process having its free margin deeply excised. The chelipeds are closely and sharply granular as far as the fingers. In the male, they are much stouter than the other legs, are nearly as long as the carapace and rostrum, and have large broad palms, and strongly arched fingers that meet only at tip. In the female the chelipeds, although not much shorter than those of the male, are hardly stouter than the other legs, and have fingers than can be closely apposed throughout their extent. The ambulatory legs are slender. The rostrum carapace and legs are beset with stiff curly hairs.

This species commonly encrusts itself with a plate armour of orbitolites, rounded fragments of Nullipore.


Synonym (s)
Entomonyx nummifer Alcock, 1895

Common Name (s)
Economic Importance and Threats

Ecology
Habitat:  Sandy

Biogeography


• Lakshadweep INDIA
• Andaman and Nicobar Islands INDIA
• MALDIVES
• SRI LANKA

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

Page last updated on:2010-11-09

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