Megaderma is a genus of bat in the Megadermatidae family. It contains the following two species: Lesser False Vampire Bat (Megaderma spasma) Greater False Vampire Bat (Megaderma lyra)Megaderma lyra has a larger wingspan than Megaderma spasma. Members of this genus are found in Southeast Asia, India and Sri Lanka. The ranges of the two species overlap in the Malayan Peninsula, Sri Lanka, Thailand, Vietnam, Cambodia, Myanmar and along the east coast of India.