Sewellina reductus   Krishnaswamy  1957 (Copepod)
Organism information awaits expert curation
Class: Maxillopoda

Size: Length 0.50 – 0.52 mm.

Body cylindrical, vermiform and highly modified. Much reduced and filiform appendages. Anal operculum present. Antennule 6-segmented, with an aesthete on the fourth segment. Exopod of antenna 1-segmented and rudimentary, with two apical setae. Maxilliped prehensile with a terminal claw. P.1 uniramous with 3 segments, the terminal segment with 2 geniculate setae. P.2 biramous, with a single-segmented exopod and endopod, each bearing a modified seta. P.5 is reduced to a triangular lamina with 3 setae. Egg sac single with 1 or 2 eggs arranged in a linear row. Caudal ramus three times longer than wide, with a terminal claw, an internal spine, 3 lateral and 3 terminal setae. The well developed terminal seta is about half the length of the body.

Synonym (s)
Sewellina reductus Krishnaswamy 1957

Common Name (s)
Economic Importance and Threats

Habitat:  Sandy, Coastal


• Lakshadweep, Andrott INDIA (Record: 24/02/1983)
• Lakshadweep, Kilttan INDIA (Record: 2/3/1983)
• Lakshadweep INDIA
• Andhra Pradesh, Waltair Coast INDIA (Record: 1966)
• Bay of Bengal INDIA (Record: 1966)
• East Coast INDIA

Literature Source(s)
  • Nagabhushanam, AK and Krishnan, S (1993) Observations on the distribution of some of the marine organism inhabiting the inter-tidal zone along the western continental shelf of the Bay of Bengal, with particular reference to the Tamil Nadu coastal strip Records of the Zoological Survey of India 93(3-4) 449-490 Available at - ZSI, Pune
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Rao, GC (1991) Meiofauna State fauna series 2: Fauna of Lakshadweep ZSI, Calcutta 41-135 Available at - NIO, Goa
  • Rao, GC and Ganapati, PN (1966) The interstitial fauna inhabiting the beach sands of Waltair coast Proceedings of the National Institute of Sciences of India 34(2) Available at -

Page last updated on:2009-06-10

Back to Search