| abstract | Three new species of tyroglyphoid mites found on bats in Czechoslovakia and Bulgaria are described. These are: Nycteriglyphus tuerkorum sp.n., found on Nyctalus noctula (Schreb.) and Myotis myotis (Borkh.) in Czechoslovakia, N. bulgaricus sp.n., detected on Pipistrellus pipistrellus (Schreb.) and Plecotus auritus (L.) in Bulgaria and Calvolia miniopteri sp.n., found on Miniopterus schreibersi (Kuhl) in Czechoslovakia. Evaluating earlier findings of tyroglyphoid mites on bats, the author assumes that those were only found by chance, without any relation of the mites to their host bats. By this time free living, i.e., nonparasitic forms or stages of development have been detected on bats used only for transport purposes. The author assumes that only the representatives of the genus Nycteriglyphus Zachv., 1941 demonstrate a certain affinity to bats and a predisposition to a parasitic life. |