Page last updated Thu 04 May 2017


Image from Zooplankton of the Great Lakes.

Use the links to navigate the hierarchy of invertebrate classification.

  Genus Diacyclops

Species D. thomasi

Taxon Information

The Species D. thomasi 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

  • Diacyclops thomasi, "Widespread in Canada and the conterminous USA; no records from Alaska or Mexico. Usually planktonic in large lakes and reservoirs, but has been found in small waterbodies including riverside rock pools and cave pools" (Reid & Williamson, 2010).
  • Cyclops (Diacyclops) bicuspidatus thomasi, "A widely distributed and common limnetic species in [North America]" (Wilson & Yeatman, 1959).


  • Reid, J.W. & C.E. Williamson. 2010. Copepoda. [in] J.H. Thorp & A.P. Covich (eds.). Ecology and Classification of North American Freshwater Invertebrates, 3rd edition: 829-899.
  • Wilson, M.S. & H.C. Yeatman. 1959. Free-Living Copepoda. [in] W.T. Edmondson (ed.). Ward & Whipple Fresh-Water Biology, 2nd edition: 735-861.

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