Loimia medusa   (Savigny in Lamarck,  1818) (Marine Worm)
Organism information awaits expert curation
Class: Polychaeta

Image copyright: Roberto Sozzani

Size: 60-120 mm. by 6-10 mm.

Body with 17 thoracic setigers. Prostomium reduced; tentacular lobe short, collar-like with long tentacles on atero-ventral surface. Lateral lobe membranous, horizontally placed over segments 2 and 3. Buccal segment with a large, rounded foliaceous lower lip. Uncini pectiniform with a single vertical series of 5-6 teeth, in double rows, set back to back on posterior thorax. Abdominal uncini on square pinnules. Thoracic region swollen, abdomen long and slender. A large rounded foliaceous arched lip over the mouth. Lateral lobes of the first segments large and foliaceous. 3 pairs of subequal gills with numerous, slender, branches. The uncini are flat pectinate plates with 4-5 log curved teeth set in a single row. Capillary dorsal setae winged, with a smooth tip, on 17 thoracic segments. About 9- 10 ventral shields. Tube membranous coated with sand and debris.

Synonym (s)
Terebella medusa Savigny, 1820
Loimia medusa Fauvel, 1932
Loimia medusa Fauvel, 1953
Loimia medusa Willey, 1905
Terebella medusa Savigny in Lamarck 1818
(Objective synonym)

Common Name (s)
Economic Importance and Threats

Habitat:  Pelagic, Estuarine, Coastal


• Lakshadweep, Kavaratti INDIA (Record: 3/1/1980)
• Lakshadweep INDIA
• Andaman and Nicobar Islands, Andamans INDIA
• Orissa, Arkhakuda INDIA (Record: 1995)
• West Bengal, Gangetic Delta INDIA (Record: 1995)
• Orissa INDIA (Record: 1995)
• Tamil Nadu, Gulf of Mannar INDIA (Record: 1991, 1995, 2001)
• Tamil Nadu, Vellar Estuary INDIA (Record: 1995)
• Gujarat INDIA (Record: 1991, 1995)
• Andaman and Nicobar Islands INDIA (Record: 1995)
• Red Sea (Record: 1991, 1995, 1998)
• Persian Gulf (Record: 1991, 1998)
• INDIA (Record: 1998)
• Tamil Nadu, Parangipettai Coast (Lat: 11.48) (Long: 79.76) INDIA (Record: 1998)
• West Bengal, Ganga Sagar INDIA (Record: 22/03/1981, 12/07/1983)
• Kerala, Kochi Estuary INDIA (Record: 03/1974-03/1976)
• Andaman and Nicobar Islands, Andaman Islands INDIA (Record: 2001)
• Bay of Bengal (Record: 2001)
• Andhra Pradesh, Kakinada Bay INDIA (Record: 2005)
• Tamil Nadu, Porto Novo INDIA
• Tamil Nadu, Adyar Estuary INDIA
• Orissa, Subarnarekha estuary INDIA
• West Bengal, South 24 Parganas INDIA
• West Bengal, East Medinipur INDIA

Literature Source(s)
  • Wehe, T and Fiege, D (2002) Annotated checklist of the polychaete species of the seas surrounding the Arabian Peninsula: Red Sea, Gulf of Aden, Arabian Sea, Gulf of Oman, Arabian Gulf Fauna of Arabia 19 7-238 Available at - http://www.senckenberg.de/files/content/forschung/abteilung/aquazool/mev2/wehe_&_fiege.pdf
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • Misra, A and Chakraborty, RK (1991) Annelida: Polychaeta State fauna series 2: Fauna of Lakshadweep ZSI, Calcutta 137-165 Available at - NIO, Goa
  • Rao, CAN (1995) Annelida: Polychaeta Wetland ecosystem series 1: Fauna of Chilika lake ZSI, Calcutta 319-336 Available at - NIO, Goa
  • Sozzani, R (1999) 2009 BELOW Available at - www.robertosozzani.it
  • Srikrishnadhas, B; Murugesan, P and Khan, SA (1998) Polychaetes of Parangipettai coast Annamalai University, Parangipettai 110 pp Available at - NIO, Goa
  • Misra, A (1995) Polychaetes Estuarine ecosystem series, Part 2: Hugli Matla Estuary ZSI, Calcutta 93-155 Available at - NIO, Goa
  • Pillai, NGK (2001) On some benthic polychaetes from Cochin Estuary Journal of the Marine Biological Association of India The Marine Biological Association of India, Cochin 43(1&2) 120-135 Available at - NIO, Goa
  • Raut, D; Ganesh, T; Murty, NVSS and Raman, AV (2005) Macrobenthos of Kakinada Bay in the Godavari delta, East coast of India: comparing decadal changes Estuarine, Coastal and Shelf Science Elsevier 62(4) 609-620 Available at - http://dx.doi.org/10.1016/j.ecss.2004.09.029
  • 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 - http://eprints.cmfri.org.in/567/1/Bulletin_7.pdf
  • Srikrishnadhas, B; Ramamoorthi, K and Balasubrahmanyan, K (1987) Polychaetes of Porto Novo waters Journal of the Marine Biological Association of India The marine biological association of India 29(1&2) 134-139 Available at - NIO, Goa
  • 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
  • Krishnamoorthi, B (1963) On the distribution of six species of polychaetes in the Adyar estuary, Madras Journal of the marine biological association of India The marine biological association of India 5(1) 97-102 Available at - NIO, Goa
  • Mitra, S (2010) Habitat and population density of Lingula anatina (Brachiopoda) - A living fossil from subarnarekha estuary, orissa Journal of Environment and Sociobiology Social Environmental and Biological Association, Kolkata, India 7(2) 140 Available at - NIO,Goa
  • Mitra, S; Misra, A (2010) Polychaetes of the Wetlands of West Bengal Journal of Environment and Sociobiology Social Environmental and Biological Association, Kolkata, India 7(2) 141-146 Available at - NIO,Goa

Page last updated on:2011-10-25

Back to Search