This species has been recorded from Peninsular Malaysia, Singapore, the island of Borneo, the Indonesian islands of Java, Sulawesi, Mendanau, Kangean, Flores, the Togian Islands and Karakelong (Corbet and Hill 1992; Flannery 1995) and Taiwan (Smith et al. 2008). There are doubtful records of this species by Huynh et al. (1994) from Sa Pa and Hanoi in Viet Nam (Bates et al. 1999). Records of a Myotis species from New South Wales, Australia have been allocated to M. adversus but refer to M. macropus (T. Reardon pers. comm.). The Vanuatu record is of unclear taxonomic affinity (T. Reardon pers. comm.), but is included here pending resolution of its taxonomic status.