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Subeucalanus longiceps

Matthews (1925)

Download a fact sheet for Subeucalanus longiceps (PDF 349KB)


Phylum Arthropoda
Subphylum Crustacea
Class Maxillopoda
Subclass Copepoda
Order Calanoida
Family Subeucalanidae
Genus Subeucalanus
Species longiceps


  • Female: 4.20 - 4.90 mm
  • Male: 3.20 - 8.80 mm

Distinguishing characteristics

  • Female with pointed cephalosome
  • Large species of Subeucalanus


  • Secondary sexual characters not distinct
  • Males of the genus poorly known and morphology highly variable
  • Anterior head rounded
  • Left leg 3 extends to the posterior border of the urosome
  • Terminal seta about the same length as the terminal segment


  • Anterior head triangulated and elongated
  • A2 endopod segment 1 shorter than endopod segment 2 and about 2 times as long as wide
  • Basis of mandibular palp with 3 setae, endopod does not reach the distal border of basis, endopod segment 1 with 2 setae, endopod segment 2 with 3 setae
  • Maxillule basal endite 2 with 5 setae
  • Genital segment slightly wider than longer
  • Caudal rami slightly asymmetrical


  • Boreal-temperate
  • Circumglobal
  • Southern hemisphere West wind drift system

Mostly epipelagic



  • Bradford-Grieve J., (1994). The marine fauna of New Zealand: Pelagic calanoid copopoda: Megacalanidae, Calanidae, Paracalanidae, Mecynoceridae, Eucalanidae, Spinocalanidae, Clausocalanidae. New Zealand Oceanographic Memoir 102.
  • Bradford-Grieve, J. M., E. L. Markhaseva, et al. (1999). Copepoda. South Atlantic Zooplankton. D. Boltovskoy. Leiden, The Netherlands, Backhuys Publishers. 1: 869-1098.@