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Farranula concinna

Dana (1853)

Download a fact sheet for Farranula concinna (PDF 347KB)


Phylum Arthropoda
Subphylum Crustacea
Class Maxillopoda
Subclass Copepoda
Order Cyclopoida
Family Corycaeidae
Genus Farranula
Species concinna


  • Female: 0.79 – 1.04 mm
  • Male: 0.73 – 0.90 mm

Distinguishing characteristics

  • Cuticular lenses
  • Genital somite form


  • Very difficult to identify
  • Similar to F.gibbula but smaller in size


  • 2 plumose or spiny setae at base of A2
  • Prosome 2 segmented
  • Prosome 2 times as long as urosome
  • Prosome points < half genital somite
  • Beak like keel on ventral surface
  • P4 with no trace of endopod, 1 naked seta at the base
  • Urosome 1 segmented
  • Urosome 3 times longer than caudal rami
  • In lateral view, female genital somite with anterior thickened part longer than narrow posterior section
  • In lateral view, dorsal and ventral margins of the genital somite appear almost parallel in part before tapering, similar to F.gibbula which has an irregularly humpbacked genital somite
  • Setae on antero ventral part of genital somite
  • Caudal rami 3 times longer than wide




  • 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.
  • Farran, G. P. (1911). "Plankton from Christmas Island, Indian Ocean. I. On Copepoda of the Family Corycaeidae." London Proc. Zool. Soc. 1911: (282-296).
  • Tanaka, O. (1957). "On copepoda of the family Corycaeidae in Japanese waters." Journal of the Faculty of Agriculture, Kyushu University 11(1): 77-97.