University of Tasmania, Australia

UTAS Home | UTAS Staff | UTAS Contacts


UTAS Home > IMAS Home > Image Key > Copepoda > Calanoida > Centropagidae >  Centropages elongatus

Centropages elongatus

Giesbrecht (1896)

Download a fact sheet for Centropages elongatus (PDF 598KB)


Phylum Arthropoda
Subphylum Crustacea
Class Maxillopoda
Subclass Copepoda
Order Calanoida
Family Centropagidae
Genus Centropages
Species elongatus


  • Female: 1.50 – 1.90 mm
  • Male: 1.74 – 2.00 mm

Distinguishing characteristics

  • P5 form


  • Last prosome somite quite rounded
  • Right P5 exopodal segment 3 terminated by 2 thick spine like extensions
  • Distinctive shape to end exopodal segment of left P5


  • A1 passes the caudal rami by the last 2 segments
  • Last prosome somite quite rounded
  • Spine like extension on exopodal segment 2 of P5 reaches or just exceeds the distal end of exopodal segment 3
  • Notch in proximal internal part of exopodal segment 1 of P5
  • No spines on urosome
  • Genital somite almost symmetrical
  • Caudal rami as long as 2 preceding somites


  • Epipelagic, coastal
  • Indian and Pacific, not Atlantic
  • Tropical, subtropical


  • Little is known about the ecology of this species


  • Conway DVP, White, R.G., Hugues-Dit-Ciles, J., Gallienne, C.P. and Robins, D.B. (2003). Guide to the coastal and surface zooplankton of the south-western Indian Ocean, Vol Occasional Publications No. 15. Marine Biological Association of the United Kingdom.
  • Grice G.D., (1961) 1962. Calanoid copepods from equatorial waters of the Pacific Ocean. Fishery Bull. Fish Wildl. Serv. U.S., 61 (186): 167-246.
  • Razouls C., de Bovée F., Kouwenberg J. et Desreumaux N., 2005-2009. Diversity and Geographic Distribution of Marine Planktonic Copepods. Available at