Quadrella coronata   Dana,  1852 (Crab)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Arthropoda
Class: Malacostraca
Order:Decapoda
Family:Trapeziidae

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Description
Interorbital margin cut into 4 triangular lobes. Thoracic sternum rounded. First 3 sternites forming arcuate triangle. Last abdominal segment twice as wide as long. Single row of triangular teeth on posterior margin of dactylus. First male pleopod distally setose or spinulose. Anterior margin of cheliped merus bearing 7-10 long, curved, regularly spaced spines. On posterior margin of ambulatory dactylus 8 teeth, strongly diminishing in size proximally. Tip of first male pleopod incurved.

Carapace squarely hexagonal, moderately convex, perfectly smooth, polished, about as long as broad. An acute procurved spine at the open angle of the junction of the antero-lateral and postero-lateral borders. Front with 6 horizontal spinules, the four larger of which belong to the front proper, the other two being at the lower inner angles of the orbits which are much more prominent than the also spiniform upper inner angles. Outer angle of orbit acute: eyes small, the diameter of the cornea about a tenth the length of the carapace. Chelipeds smooth and polished, abourt 2¾ times the length of the carapace, the arm, and the palm each being nearly as long as the carapace. The whole arm, as well as the end of the ischium, visible, from above beyond the carapace; an apicular spine at the inner angle of the ischium and from six to ten such spines along inner (anterior) border of arm; one, or two, little spines sometimes, but not always, present at inner angle of wrist: lower border of hand quite smooth. Legs long slender, about 1¾ times the length of the carapace; a few silky hairs on dactylus and propodite, and sometimes a very few on the carpus also: the inner edge of the dactylus stongly toothed.

Symbionts of alcyonaceans, antipatharians and gorgonians.


Synonym (s)
Quadrella coronata Dana, 1852 a
Quadrella coronata var. granulosa Borradaile, 1902

Common Name (s)
Economic Importance and Threats

Ecology
Habitat:  Reef Associated, Coastal

Biogeography


• Andaman and Nicobar Islands, Andaman Islands (Lat: 12.5) (Long: 92.75) INDIA
• Andaman and Nicobar Islands INDIA
• Lakshadweep INDIA
• Red Sea
• Tamil Nadu, Chennai Coast INDIA
• Andhra Pradesh, Waltair Coast INDIA
• Kerala, Malabar Coast INDIA
• Kerala, Travancore Coast INDIA
• Tamil Nadu INDIA

Literature Source(s)
  • Castro, P (2002) New records of trapeziid crabs (Xanthoidea, Trapeziidae) from the Andaman Sea coast of Thailand, with notes on the taxonomic status of Trapezia plana Ward, 1941 Phuket Marine Biological Center Special Publication 23(2) 361-367 Available at - ZOOR14001003067
  • Kensley, B (1981) On the Zoogeography of Southern Afrian Decapod Crustacea, with a distributional checklist of the species Smithsonian Contributions to Zoology Smithsonian Institution Press, Washington, D.C. 338 23377 Available at - NIO, RC Kochi
  • 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
  • Alfred, JRB; Sinha, NK and Chakraborty, S (2002) Checklist of mammals of India Occasional paper no. 199 ZSI, Kolkata 289 pp Available at - NCL, Pune
  • ASAHI Net Available at - http://www.ne.jp/
  • 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 - http://www.sdmri.org/reports/proceedings%202005%20-%20sdmri.pdf
  • 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:2011-10-11

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