Actaea echinus   Alcock,  1898 ()
Organism information awaits expert curation
Class: Malacostraca

Image copyrights: Government of India

Size: Width 42 mm; length 37 mm

Carapace is broadly oval in shape, moderately convex anteriorly and almost flat posteriorly. Regional lobules flat, distinctly demarcated by broad, smooth grooves, each lobule covered with several long, prominent, blunt pointed nodules. Four large spines with few smaller spinules in between them are present on the antero-lateral sides of carapace. Three large spines present on upper edge of palm, besides the usual prominent long nodules present on the leg joints and on the equal chelipeds. Lobule 2M divided; 1M, 3M, 4M, 6L, all are distinct; 1P heart-shaped and divided. Other lobules are indistinct. Leg joints thin, compressed, upper edges of merus crested, carpus and propodus with nodules on upper edges. Spongy growth of hairs on arm of chelipeds are marked; in other places it is obscure. Nodules on the anterior part of carapace and chelipeds are more prominent and large. The under surfaces are granular.
Anterior male pleopod is a process, strong and curved near the base and apex. Rows of sharp spinules present at the base and the outer sub-apical sides of pleopod. A cluster of 12-15 long, plumose setae present on the innerside of subapical region, the outer side of the same region is armed with strong, scattered spinules.

Synonym (s)
Actaea nodulosa var. echinus Odhner, 1925
Actaea echinus Alcock, 1898

Common Name (s)
Economic Importance and Threats



• West Coast, Malabar (Lat: 9.97) (Long: 76.23) INDIA
• Karnataka, Karwar INDIA

Literature Source(s)
  • 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
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -

Page last updated on:2010-08-17

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