Onychodiaptomus

Onychodiaptomus is a genus of copepods in the family Diaptomidae, containing the following species: Onychodiaptomus louisianensis, a species endemic to the United States, is listed as Data Deficient on the IUCN Red List.
 * Onychodiaptomus birgei (Marsh, 1894)
 * Onychodiaptomus hesperus M. S. Wilson & Light, 1951
 * Onychodiaptomus louisianensis M. S. Wilson & W. G. Moore, 1953
 * Onychodiaptomus sanguineus (S. A. Forbes, 1876)
 * Onychodiaptomus virginiensis (Marsh, 1915)