This East Asian free-tailed bat has relatively short dorsal hair and thin, rounded ears in comparative descriptions. Acoustic records on Amami-Oshima have not confirmed the species identity.
A comparative study describes relatively short dorsal hair and thin, rounded ears; dental characters also help distinguish it from related bats.
At Amami-Oshima, open coastal and upland areas were selected for flight and foraging more often than broad-leaved forest. The acoustic identification was presumptive because a close relative could not be excluded.
An extinction-risk assessment has not been added yet.