An annotated checklist of the freshwater molluscs (Gastropoda, Bivalvia) of Crete, Greece

An updated checklist of the freshwater molluscs of the island of Crete (Greece) based on an extensive literature review is presented herein. Twenty-four gastropods and three bivalve species were documented and placed in 13 families. Eleven more taxa were reported, their presence on the island and/or taxonomic status are discussed. The most species-rich family was Planorbidae Rafinesque, 1815 counting seven species in Crete. One record of the alien species Potamopyrgus antipodarum (Gray, 1843) was reported. New species belonging to the genera Pseudamnicola Paulucci, 1878 and Bythinella Moquin-Tandon, 1856 have been identified by previous research efforts, but have not been described yet. More field studies are necessary in order to reveal the true freshwater molluscan richness of Crete. This study aims to be a guide for malacologists wishing to explore the gastropod and bivalve diversity of Cretan fresh waters.