The Javan mastiff bat (''Otomops formosus'') is a species of bat in the family Molossidae that is

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found els ...

Indonesia Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania between the Indian and Pacific oceans. It consists of over 17,000 islands, including Sumatra, Java, Sulawesi, and parts of Borneo and New Guine ...

References

Otomops Bats of Indonesia Endemic fauna of Indonesia Fauna of Java Taxonomy articles created by Polbot Mammals described in 1939 Taxa named by Frederick Nutter Chasen {{Molossidae-stub