Calappa calappa   (Linnaeus,  1758) (Crab)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Arthropoda
Class: Malacostraca
Order:Decapoda
Family:Calappidae

Image copyrights: Teresa Zubi

Description
Size: Max length 13.0 cm CW (male)

Length of carapace rather less than half of its extreme width. Edge of clypeiform expansions entire and smooth. Carapace indistinctly tuberculated on anterior half but with wavy beaded lines towards the posterior surface.

Surface of Carapace nearly smooth anteriorly, marked with transverse wavy beaded lines posteriorly; its antero-lateral borders crenulated. Clypeiform expansions very large, their breadth equal to their edge smoothly moulded posterior border of the carapace. Outer part of the pterygostomian regions densely hairy. Front slightly projecting beyond the level of the orbits, bilobed, its breadth at the tip rather less than the breadth of the orbit. Transverse wing. like expansion near the distal end of the arm with its edge smooth and entire. Outer surface of palm with squamiform tubercles and transverse wavy beaded ridges. Upper margin or crest of palm bluntly dentate.

There are two well known color morphs occur in these crabs one in plain colored and another spotted.


Synonym (s)
Cancer calappa Linnaeus, 1758
Cancer fornicatus Fabricius, 1781

Common Name (s)
Economic Importance and Threats

Ecology
Habitat:  Demersal, Rocky

Biogeography


• Lakshadweep INDIA
• Andaman and Nicobar Islands INDIA
• MALDIVES
• MAURITIUS

Literature Source(s)
  • (2002) Lakshadweep Islands biodiversity strategy and action plan (Version: 3)
  • 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
  • Sealifebase Available at - http://www.sealifebase.org/
  • Starfish Available at - http://www.starfish.ch/

Page last updated on:2010-10-31

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