Aricia exarmata   Fauvel,  1932 (Marine Worm)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Annelida
Class: Polychaeta
Order:
Family:Orbiniidae

Description
Size: Length of thorax 20 mm. long, 9-10 mm. broad and 4-5 mm. thick.

Body of very large size, depressed, enlarged in the thoracic region, semi-cylindrical in the abdominal region. Prostomium rather small, blunt, conical, without eyes. Thoracic setigerous segments 15-16 (the 16th often smaller, intermediate). Gills begin in the 5th setigerous segment. The anterior ones are triangular, lanceolate; the abdominal ones long and narrow. Dorsal ramus with an asymmetrical chopper-shaped dorsal cirrus with pointed tip; a bundle of camerated capillary setae. Ventral ramus a flattened vertical pad, with a narrow elongated lamella bearing a fringe of about 12-15 long conical papillae, several vertical rows of bent subuluncini and long serrated capillary setae. Genuine hooks (uncini) and spear-shaped spines absent. Ventral papillae (sub-podiale) absent. In the abdominal region, a long dorsal cirrus faintly cultriform, a bundle of long slender, forked, serrated setae. Intermediate cirrus (inter-cirrus) absent. Ventral ramus erect, bilobed, with an aciculum and a few slender capillary setae. Ventral cirrus reduced to a small subulate knob. Proboscis with reduced to a small subulate knob. Proboscis with membranaceous lobes encircling the mouth. A dorsal three-lobed sense-organ.


Synonym (s)

Common Name (s)
Economic Importance and Threats

Ecology

Biogeography


• Bay of Bengal INDIA (Depth: 243 mts)

Literature Source(s)
  • Fauvel, P (1953) The fauna of India including Pakistan, Ceylon, Burma and Malaya: Annelida, Polychaeta The Indian press ltd., Allahabad 507 pp Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org

Page last updated on:2011-03-24

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