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UTAS Home > IMAS Home > Image Key > Copepoda > Cyclopoida > Corycaeidae >  Monocorycaeus robustus

Monocorycaeus robustus

Giesbrecht (1891)

Download a fact sheet for Monocorycaeus robustus (PDF 442KB)


Phylum Arthropoda
Subphylum Crustacea
Class Maxillopoda
Subclass Copepoda
Order Cyclopoida
Family Corycaeidae
Genus Monocorycaeus
Species robustus


  • Female: 2.00 - 2.40 mm
  • Male: 1.60 - 2.40 mm

Distinguishing characters

  • Large and robust
  • 2 setae on antenna are of subequal length
  • Female genital somite protrudes dorsally over the basis of the anal somite
  • Caudal rami short and divergent


  • Genital somite large
  • Anal somite short
  • Caudal rami divergent and more than 2 times as long as anal somite


  • Large and robust
  • Genital somite large and oval, 1.4 times as long as wide, tubuncle present on dorso lateral margin, posterior overlaps anal somite
  • Anal somite very short
  • Caudal rami 1.5x as long as anal somite and very divergent


  • Epipelagic
  • Oceanic and coastal
  • Atlantic and Pacific oceans



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