Eurythoe complanata   (Pallas,  1766) (Marine Worm)
Organism information awaits expert curation
Class: Polychaeta

Image copyrights: Hawai'i coral reef network

Size: Length 100-200 mm.

Color: Light red in life.

Body large, carancle extending up to setiger 4, branchiae from setiger 2 onwards. Notosetae of three types, i) smooth, pointed setae, ii) harpoon setae and iii) fine setae with a small basal spur.
Neurosetae of two types, i) short forked setae with unequal prongs and ii) slender setae with a small basal spur.

On irritation the worms erect their setae which break off easily, releasing poisonous contents.

Synonym (s)
Amphinome alcyonia Quatrefages, 1866
Eurythoe alcyona[sic] Gravier, 1906
Eurythoe alcyonia Gravier, 1902
Eurythoe complanata Amoureux et al., 1978
Eurythoe complanata Day, 1965
Eurythoe complanata Fauvel, 1957
Eurythoe complanata Fauvel, 1932
Eurythoe complanata Fauvel, 1933
Eurythoe complanata Fauvel, 1953
Eurythoe complanata Fauvel, 1958
Eurythoe complanata Fauvel, 1955
Eurythoe complanata Fauvel, 1951
Eurythoe complanata Fauvel, 1919
Eurythoe complanata Fishelson, 1971
Eurythoe complanata Fishelson & Rullier, 1969
Eurythoe complanata Hartman, 1959
Eurythoe complanata Hartman, 1974
Eurythoe complanata Kiseleva, 1971
Eurythoe complanata Monro, 1937
Eurythoe complanata Monro, 1939
Eurythoe complanata Wesenberg-Lund, 1949
Pleione alcyonia Savigny, 1826
Amphinome jamaicensis Schmarda, 1861
(Heterotypic synonym)
Amphinome macrotricha Schmarda, 1861
(Heterotypic synonym)
Aphrodita complanata Pallas, 1766
(Homotypic synonym)
Blenda armata Kinberg, 1867
Eurythoe albosetosa Kinberg, 1857
(Heterotypic synonym)
Eurythoe alcyonaria Gravier, 1902
(Heterotypic synonym)
Eurythoe assimilis McIntosh, 1925
(Heterotypic synonym)
Eurythoe capensis Kinberg, 1857
(Heterotypic synonym)
Eurythoe corallina Kinberg, 1857
(Heterotypic synonym)
Eurythoe ehlersi Kinberg, 1867
(Heterotypic synonym)
Eurythoe havaica Kinberg, 1867
(Heterotypic synonym)
Eurythoe indica Kinberg, 1867
(Heterotypic synonym)
Eurythoe kamehameha Kinberg, 1857
(Heterotypic synonym)
Eurythoe laevisetis Fauvel, 1914
(Heterotypic synonym)
Eurythoe pacifica Kinberg, 1857
(Heterotypic synonym)
Eurythoe pacifica levukaensis McIntosh, 1885
(Heterotypic synonym)
Lycaretus neocephalicus Kinberg, 1867
(Heterotypic synonym)
Pleione alcyonea Savigny in Lamarck, 1818
(Heterotypic synonym)
Aphrodita complanata Pallas, 1766
(Senior synonym)
Eurythoe pacifica Kinberg, 1857
(Junior synonym)
Pleione alcyonia Savigny, 1822
(Junior synonym)

Common Name (s)
Economic Importance and Threats

Habitat:  Reef Associated, Rocky, Coastal


• Gujarat, Gulf of Kachchh (Lat: 22.6) (Long: 69.5) INDIA
• Goa, Mandovi Estuary (Lat: 15.28) (Long: 73.52) INDIA
• Lakshadweep, Andrott INDIA (Record: 19/12/1979)
• Lakshadweep, Agatti INDIA (Record: 10/03/1983)
• Lakshadweep, Kavaratti INDIA (Record: 05/02/1986)
• Lakshadweep INDIA
• Andaman and Nicobar Islands, Andaman Islands INDIA
• Persian Gulf
• Red Sea
• Gulf of Aden
• Andaman and Nicobar Islands, Andaman Islands INDIA
• Arabian Sea
• Tamil Nadu, Kilakarai INDIA
• Tamil Nadu, Kanniyakumari INDIA
• Tamil Nadu, Pamban INDIA
• Maharashtra INDIA
• Maharashtra, Malvan (Lat: 16.08) (Long: 73.05) INDIA
• Andaman and Nicobar Islands, North Reef Island INDIA
• Gujarat, Okha Reef INDIA
• Gujarat, Adatra Reef INDIA
• Gujarat, Hanumandandi Reef INDIA
• Andaman and Nicobar Islands, Car Nicobar INDIA
• Andaman and Nicobar Islands, Mayabunder INDIA
• Tamil Nadu, Kodikkarai (Lat: 10.3) (Long: 79.85) INDIA (Record: 09/2007-08/2008)
• Tamil Nadu, Mallipattinam (Lat: 10.27) (Long: 79.32) INDIA (Record: 09/2007-08/2008)
• Tamil Nadu, Manalmelkudi (Lat: 10.42) (Long: 79.31) INDIA (Record: 09/2007-08/2008)
• Tamil Nadu, Gulf of Mannar INDIA
• Tamil Nadu, Rameswaram Island INDIA
• Andaman and Nicobar Islands, Car Nicobar INDIA
• Kerala, Kollam INDIA
• Andaman and Nicobar Islands INDIA

Literature Source(s)
  • Tikadar, BK; Daniel, A and Subbarao, NV (1986) Sea shore animals of Andaman and Nicobar Islands The Director, ZSI, Kolkatta 188 Available at - ZSI, Pune
  • Russell, FE and Nagabhushanam, R (1996) Minor phyla in the venomous and poisonous marine invertebrates of the Indian Ocean 1-271 Available at - NIO, Goa
  • Tikader, BK and Das, AK (1985) Glimpses of animal life of Andaman and Nicobar Islands ZSI, Kolkata 1-170 Available at - NCL, Pune
  • Fauvel, P (1941) On a small collection of Annelida Polychaeta of the Indian Museum, Calcutta Records of the Indian Museum ZSI, Calcutta 42 253-268 Available at - Pune University, Pune
  • 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
  • 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 -
  • Subba Rao, NV and Sastry, DRK (2005) Fauna of Marine National Park, Gulf of Kuchchh (Gujarat) ZSI 79 pp Available at - NCL, Pune
  • Parulekar, AH; Dhargalkar, VK and Singbal, SYS (1980) Benthic studies in Goa estuaries: Part III- Annual cycle of macrofaunal distribution, production and trophic relations Indian Journal of Marine Sciences 9 189-200 Available at - NIO, RC Kochi
  • A guide to Singapore Polychaetes Available at -
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Misra, A and Chakraborty, RK (1991) Annelida: Polychaeta State fauna series 2: Fauna of Lakshadweep ZSI, Calcutta 137-165 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
  • Sealifebase Available at -
  • Parulekar, AH (1971) Polychaetes from Maharashtra and Goa Journal of Bombay Natural History Society Bombay Natural History Society 68(3) 726-749 Available at - NIO, Goa
  • Parulekar, AH (1981) Marine fauna of Malvan, central west coast of India Mahasagar - Bulletin of National Institute of Oceanography NIO 14(1) 33-44 Available at - NIO, Goa
  • Rao, GC; Rao, DV and Devi, K (1994) A faunal exploration of the North Reef Island sanctuary, North Andaman Journal of the Andaman Science Association Andaman Science Association, Port Blair 10(1&2) 68-81 Available at - NIO, Goa
  • Gopalakrishnan, P (1970) Some observations on the shore ecology of the Okha Coast Journal of the Marine Biological Association of India Cochin, India 120(1&2) 15-34 Available at - NIO, Goa
  • Tampi, PRS and Rangarajan, K (1964) Some polychaetous Annelids from the Andaman waters Journal of the Marine Biological Association of India The Marine Biological Association of India, Cochin, India 6(1) 98-123 Available at -
  • Varadharajan, D; Soundarapandian, P; Gunalan, B and Babu, R (2010) Seasonal abundance of macro benthic composition and diversity along the south east coast of India European Journal of Applied Sciences IDOSI Publications 2 (1) 1-5 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 -
  • Das, AK and Roy, MKD (1989) A general account of the mangrove fauna of Andaman and Nicobar islands Fauna of conservation areas Zoological survey of India 1-152 Available at - NIO, Goa
  • Rao, GC (1991) Distribution of plants and animals on the rocky sea shores of Andaman and Nicobar Islands Journal of the Andaman Science Association Andaman Science Association, Port Blair 7(2) 30-42 Available at - NIO, Goa

Page last updated on:2011-08-29

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