v. Key to species of Megadermatidae
This family is represented by a single genus, Megaderma in Southeast Asia, and M. spasma is the only known species in Sumatra. Posterior noseleaf elliptic, round on the top, narrower than posterior edge of intermediate noseleaf, and the length is shorter than or subequal to the length of intermediate + anterior noseleaves; FA 52–63 mm; TB 30–35 mm; BM 16–30 g.