Malacological news from the Czech and Slovak Republics in 2021

This paper presents important faunistic records conducted in the Czech and Slovak Republics during 2021. In the Šumava Mts, South Bohemia, a hydrobiid snail of the genus Alzoniella was found. Monacha cantiana s. lato was genetically confirmed for the first time in the city of Bratislava, Slovakia. New sites of Cornu aspersum (Prague) and Tandonia kusceri (southern and central Slovakia) were confirmed. A new colony of the slug Limacus maculatus was found in SE Moravia. New records of several endangered species, e.g. Vertigo angustior, V. moulinsiana, Anisus septemgyratus, Gyraulus acronicus, G. rossmaessleri, Planorbis carinatus, Pisidium amnicum, P. globulare, P. moitessierianum, P. pseudosphaerium and P. tenuilineatum, are also presented. Location data are published with all details in a supplementary table.