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Pleuromamma piseki

Farran (1929)

Download a fact sheet for Pleuromamma piseki (PDF 514KB) 


Phylum Arthropoda
Subphylum Crustacea
Class Maxillopoda
Subclass Copepoda
Order Calanoida
Family Metridinidae
Genus Pleuromamma
Species piseki


  • Female: 1.70 – 2.02 mm
  • Male: 1.70 – 1.96 mm

Distinguishing characteristics

  • Pigment spot on right side
  • Form of P5
  • Size
  • The female genital somite has a marked groove or constriction on the left side


  • Geniculate antennae 1 with a double toothed row on segment 18 and on proximal parts of 19-21, segment 17 naked
  • Left P5 segment 3 with knob separated from process with a slight notch


  • P5 imperfectly segmented, 4.5 – 5 times as long as wide, 3 short, stout spines, shorter than the width of the segment.
  • The genital somite has a marked groove or constriction on the left side parallel to, and close to, the posterior margin of the somite and a large, black pigmented area around the pore.
  • Anal somite has parallel lateral margins
  • Very similar to P. borealis and P. gracilis, look at form of P5 and size




  • Bradford-Grieve, J. M., E. L. Markhaseva, et al. (1999). Copepoda. South Atlantic Zooplankton. D. Boltovskoy. Leiden, The Netherlands, Backhuys Publishers. 1: 869-1098.