Lysilla pambanensis   Fauvel,  1928 (Marine Worm)
Organism information awaits expert curation
Class: Polychaeta

Size: Upto 90 mm. and more, by 2 mm.

Body often much swollen anteriorly, ventral side convex, dorsal concave, posterior region narrow, cylindrical. In the anterior region the skin is covered with small papillae, glandular, rounded, hemispherical or flattened and often little conspicuous. In the posterior region the superficial rings are often very distinct, even nearly moniliform. There are 13-18 thoracic segments bearing dorsal setae. A wide, frilled, prostomial lobe, eyeless and bearing numerous tentacular cirri, some cylindrical slender, spirally twisted, others much stouter, strongly enlarged at the tip and grooved. A prominent upper lip, hollowed sppon like. A small triangular fleshy knob under the lower lip. First segment as a large Y-shaped pad with bent edges. The ventral shields are short, narrow, square, sunk into a ventral groove. They are not visible when the thoracic region is much swollen. Small pointed nephridial papillae on the three first setigerous segments, sometimes on the next seven, a swelling with a small central spot is visible on the base of the foot. It appears to have 8-9 pairs of nephridia, the first 4-5 pairs, often visible through the transparent teguments, being short and oval. The dorsal capillary setae, very slender and smooth, noticeably emerge from the long cylindrical foot which is slightly enlarged at the tip. Tori and uncini are utterly wanting, as well in the abdomen as in the thorax. Anus terminal, without papillae.

Synonym (s)

Common Name (s)
Economic Importance and Threats



• Tamil Nadu, Mandapam, Palk Bay INDIA

Literature Source(s)
  • Hartman, O (1974) Polychaetous annelids of the Indian Ocean including an account of species collected by members of the International Indian Ocean Expeditions, 1963-1964, and a catalogue and bibliography of the species from India. Part II Journal of the Marine Biological Association of India 16(2) 609-644 Available at - NCL, Pune
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • James, PSBR ; Thomas, PA ; Pillai, CSG and Achari Kumaraswamy, GP (1969) ´╗┐Catalogue of types and of sponges, corals, polychaetes, crabs and echinoderms in the reference collections of the Central Marine Fisheries Research Institute Bulletin of Central Marine Research Institute CMFRI, Cochin 7 1-66 Available at -
  • 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

Page last updated on:2011-04-19

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