Spadella cephaloptera   (Busch,  1851) (Marine Worm)
Organism information awaits expert curation
Class: Sagittoidea

Size: Maximum adult body length 4 mm; tail 49 %

Body slender; transversal musculature on trunk wide; head wide; hooks not serrated. Fin bridge absent; one pair of short lateral fins both on trunk and tail; lateral fins fully rayed, rounded. Collarette long; gut diverticula absent; large eyes with rectangular pigment. Seminal vesicles crescent shaped; position of seminal vesicles: touching both posterior fins and tail fin. Ovaries of medium length, near posterior end of ventral ganglion. Ovaries immature. Adhesive papillae present; adhesive organs with adhesive appendages absent. Hooks: 7-11; anterior teeth: 2; posterior teeth: 0-4.

Synonym (s)

Common Name (s)
Economic Importance and Threats

Habitat:  Benthic, Coastal


• Tamil Nadu, Gulf of Mannar INDIA (Record: 01/1955-12/1958)
• Palk Bay INDIA (Record: 01/1955-12/1958)

Literature Source(s)
  • Alfred, JRB; Das, AK and Sanyal, AK (Eds.) (1998) Faunal diversity in India ZSI, Calcutta 1-497 Available at - NCL, Pune
  • Venkatraman, K; Srinivasan, M; Satyanarayana, CH and Prabhakar D (2002) Faunal diversity of Gulf of Mannar biosphere reserve Conservation area series 15 ZSI 77 pp; VIII pla Available at - NCL, Pune
  • Balasubramanian, T Lagoons of India Environmental Information System Centre, Envis Publication Series: 3/2001 105 pp Available at -
  • Pierrot-Bults, A (2004) Chaetognatha of the world World biodiversity database Available at -
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Sealifebase Available at -
  • Sudarsan, D (1961) Observations on the chaetognatha of the waters around Mandapam Indian Journal of Fisheries Indian Council of Agricultural Research 8 (2) 364-382 Available at -

Page last updated on:2011-05-31

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