To study helminths of bats from Mordovia

Data on a helminthofauna of bats from the Republics of Mordovia are generalized in paper. The Helminths fauna of bats from three areas is studied in 2008, 2009. 85 individuals of 4 species are investigated: Nathusius’ pipistrelle, noctule, Daubenton’s and parti-coloured bats. 18 species of parasites are registered at bats of region on view of our and literature data: 13 trematodes and 5 nematodes. Trematode Parabascus joannae is specified for bat fauna of Russia for the first time. The ecological analysis of helminthofauna of bats is lead. Regular position, life style, a circle of hosts, places of detection, brief data in biology and geographical distribution are specified for everyone helminths marked at bats of the Mordovia.