Monotypic copepod genera

Ommatokoita is a monotypic genus of copepods, the sole species being Ommatokoita elongata. However, a specimen has been found on the skin of the great lanternshark (Etmopterus princeps), which has been assigned to the genus but not the species.

Dussartius baeticus is a species of crustacean in the family Diaptomidae. It is endemic to the Iberian Peninsula, having been found in south-eastern Spain, and in the waters of the Tagus estuary, the Caniçada reservoir (Cávado drainage basin), and four reservoirs in the Mondego system in Portugal.

Abergasilus amplexus is a species of parasitic copepod endemic to euryhaline habitats in New Zealand. It is the only known species in the genus Abergasilus.

Idiodiaptomus gracilipes is a species of copepod in the family Diaptomidae. It is endemic to "a pool at Itapura", in São Paulo state, Brazil.

Spelaeodiaptomus is a genus of copepods in the family Diaptomidae. It is monotypic, being represented by the single species, Spelaeodiaptomus rouchi. It is endemic to France.

Ponticyclops is a genus of copepods in the family Cyclopidae. It is monotypic, being represented by the single species Ponticyclops boscoi. It is endemic to Brazil, where its natural habitat is swamps.

Thermomesochra reducta is a species of copepod in the family Canthocamptidae, and the only species in the genus Thermomesochra. It is listed as Data Deficient on the IUCN Red List.