Page last updated Wed 05 Feb 2020


Image from An Image-Based Key To The Zooplankton Of North America.

Use the links to navigate the hierarchy of invertebrate classification.

  Genus Ophryoxus

Species O. gracilis

Taxon Information

The Species O. gracilis has been reported (or is assumed) to occur in fresh waters. This taxon has been reported from Wisconsin.

(These statements were generated automatically from the WInvertebrates database.)

Literature Records

  • Ophryoxus gracilis canadensis, "NA" (Kotov et al., 2013).
  • Ophryoxus gracilis gracilis, "NA, PA" (Kotov et al., 2013).
  • Ophryoxus gracilis kolymensis, "PA" (Kotov et al., 2013).
  • Ophryoxus gracilis, [North Central United States] (Underhill et al., 1982).
  • Ophryoxus gracilis, "Widely distributed" [North America] (Brooks, 1959).


  • Kotov, A., L. Forró, N.M. Korovchinksy & A. Petrusek. 2013. World checklist of freshwater Cladocera species. World Wide Web electronic publication. Available online at Generated 28 June 2013. 38 pp. [Available online]
  • Underhill, J.C., W.D. Schmid & D.E. Gilbertson. 1982. Taxonomic Keys to the Common Animals of the North Central States, exclusive of the parasitic worms, terrestrial insects, and birds, 4th edition. 205 pp.
  • Brooks, J.L. 1959. Cladocera. [in] W.T. Edmondson (ed.). Ward & Whipple Fresh-Water Biology, 2nd edition: 587-656.

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