Disasterina leptalacantha [Status Unaccepted]   (H. L. Clark)  1916 (Starfish)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Echinodermata
Class: Stelleroidea
Order:Valvatida
Family:Asterinidae

Description
Size: Distance from the centre of the mouth to the tip of the arm (R) = 27 mm;
Distance from the centre of the mouth to the interradial margin (r) = 9 mm.

Arms five, equal, well differentiated from the disc, breadth at the base 9-10 mm, tapering to a narrow tip. Abactinal plates on disc in five elevated groups of larger plates in the interradii – one of the groups harboring the small madreporite – central and radial regions partially naked with scattered smaller plates. Arms with irregularly arranged plates leaving naked areas at the base, plates on the midradial region irregularly arranged and not reaching the tip of the arm, regular series of somewhat ovate, slightly imbricating plates laterally. Papular pores single, scattered on disc and in about 6-8 series at the base of the arm, only two series reaching upto about 4/5th of the arm. Superomarginal plates not distinct from the rest of the abactinals. Inferomarginal plates distinct with a tuft of sacculate spines, the plates reaching beyond the superomarginals. Actinal intermediate plates in 7 series interradially, only the series adjacent to the adambulacrals reaching the tip of the arm, each with a single sacculate spine, actinal plates absent behind the oral plates in the interradii leaving a large naked patch with only sacculate spines in four interradii and a smaller patch in the fifth. Oral plates with eight marginal spines, the innermost the longest, and the two spines on the actinal surface. Adambulacrals with five, rarely six, furrow spines on the first, and four on the rest, and two subambulacral spines. The spines of the oral and adambulacral plates are slightly calcified at the base leaving a sacculate tip.


Synonym (s)
Asterina leptalacantha H. L. Clark 1916
Disasterina leptalacantha Clark and Rowe 1917

Common Name (s)
Economic Importance and Threats

Ecology
Habitat:  Coastal

Biogeography


• Lakshadweep, Agatti INDIA (Record: 27/12/1979)
• Lakshadweep INDIA
• INDIA

Literature Source(s)
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • Sastry, DRK (1991) Echinodermata: Asteroidea, Ophiuroidea and Echinoidea State fauna series 2: Fauna of Lakshadweep ZSI, Calcutta 363-397 Available at - NIO, Goa
  • Sastry, DRK (2007) Echinodermata of India : An annotated list Records of Zoological Survey of India Occassional paper No. 271 ZSI, Kolkata 1-387 Available at - http://zsi.gov.in/checklist/Echinodermata_India_Checklist.pdf

Page last updated on:2011-08-23

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