Redescription of Paludina rufescens Küster, 1852 (Gastropoda, Caenogastropoda, Rissooidea)

Boeters (1988) and Bernasconi (2000) treated Paludina rufescens Küster, 1852, as a valid species of Bythinella Moquin- Tandon, 1856, but their understanding of Küster’s taxon was different. This “imbroglio taxonomique” was analysed by Falkner et al. (2002: 88-89) without presenting a solution and Bythinella rufescens was still treated as a valid species of uncertain identity. In the present paper we conclude that Paludina rufescens is a junior synonym of Bythinella reyniesii (Dupuy, 1851). For P. rufescens a lectotype is selected.