抄録
Karyotypes of Rhinolophus pusillus (2n=62), R. affinis (2n=62), R. stheno (2n=62), R. marshalli (2n=62), R. yunanensis (2n=60) and R. luctus perniger (2n=32) from Thailand are investigated. The karyotype evolution in these species seems to be due to the Robertsonian fusion from the species with 2n=62.