Abstract
Bats in southwestern Hokkaido were studied from 1999 to 2004. In this study, we caught and gathered 177 individuals of the following 11 species using mist nets and harp traps: Rhinolophus cornutus, Rhinolophus ferrumequinum, Myotis frater, Myotis ikonnikovi, Myotis macrodactylus, Murina leucogaster, Murina ussuriensis, Pipistrellus abramus, Plecotus auritus, Nyctalus aviator and Vespertilio superans. Among these species, R. cornutus, M. frater, M macrodactylus, M. leucogaster and M. ussuriensis were newly recorded in southwestern Hokkaido. Also, we found roost sites of 4 bat species (Rhinolophus cornutus, Rhinolophus ferrumequinum, Myotis macrodactylus, Nyctalus aviator).
