Annotated checklist of free-living flatworms (Plathelminthes: Catenulida, Rhabditophora) of the Volga–Kama basin, Russia

Abstract

This article provides an overview of the taxonomic composition of free-living flatworms (Plathelminthes: Catenulida, Rhabditophora) in the Volga–Kama basin. A total of 143 flatworm species from 43 genera have been recorded from this region over more than 150 years of research, i.e. starting from the 1870s. The annotated checklist includes synonymy and taxonomic notes on some species. It also summarises the available data on the distribution of free-living flatworms across the largest river basin of Europe.