Language: English
The recent West European species of the genus Potamocypris with long swimming setae on the second antennae are revised. Among the 17 nominal species described in the literature, 9 existing species are recognized. A key to the species is proposed. Diagnosis, complements of description, taxonomic history and discussion, data on ecology and geographic distribution are given for each species. The carapace of each species (except for P. rullieri) is shown on scanning electron micrographs. Tables allowing direct comparison between related species are given.