Actaea pulchella   A. Milne Edwards,  1865 (Crab)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Arthropoda
Class: Malacostraca
Order:Decapoda
Family:Xanthidae

Image copyrights: Government of India

Description
Size: Width 16.5 mm; length 11 mm

Chelipeds and legs with a plain granular surface, areolation of carapace faint anteriorly, incomplete posteriorly. Lobulation of antero-lateral border very indistinct, no hairs on the carapace, which is thick and convex.

A small crab with broadly oval carapace which is moderately convex from side to side but strongly convex before backwards. The lobules on the carapace are less convex but distinctly outlined by broad, deep grooves, specially on the anterior two thirds only. Upper surfaces of lobules and the other raised portions of carapace, the outer surfaces of chelipeds and legs are covered with crisp granules, intermingled with short, brownish bristles which are not thick enough to conceal the lobules and their pattern. Four lobes on the anterolateral sides of carapace are sharply granular.
Wrists of chelipeds, carpus and propodus of legs are lobulated. Male specimens are more distinctly lobulated and the crisp granules are more prominent than on females. Anterior pleopode of male curved, apex notched, obtuse, spooned. Inner subapical region fringed with a cluster of long setae and an armature of rows of strong spinules present both on inner and outer parts of the subapical regions.

The textural pattern of carapace of Actaea pulchella is very clean and clearly demarcated for the species and cannot be mistaken for other allied species when their photographs are compared.


Synonym (s)
Actaea pulchella A. Milne Edwards, 1865

Common Name (s)
Economic Importance and Threats

Ecology
Habitat:  Rocky, Coastal

Biogeography


• Andaman and Nicobar Islands, Andaman Islands (Lat: 12.5) (Long: 92.75) INDIA
• Andaman and Nicobar Islands, Andaman INDIA
• INDIA
• Lakshadweep INDIA
• SRI LANKA
• MALDIVES

Literature Source(s)
  • Alcock, A (1968) Materials for a carcinological fauna of India the Brachyura Oxyrhyncha The Baptist Mission Press 1 1-456 Available at - Pune University, Pune
  • 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
  • Deb, M (1989) Contribution to the study of Xanthidae: Actaeinae (Decapoda: Crustacea) of India Records of the Zoological Survey of India. Occasional Paper No. 117 ZSI, Calcutta 59 pp Available at - NIO, Goa

Page last updated on:2010-08-17

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