Sumatran mastiff bat

The Sumatran mastiff bat (Mormopterus doriae) is a species of bat in the family Molossidae, the free-tailed bats, and it is known only from Sumatra in Indonesia. Danish mammalogist Knud Andersen described it as a new species in 1907 and named it for the Italian naturalist Giacomo Doria, whose museum in Genoa supplied the holotype, which the German entomologist Heinrich Wolfgang Ludwig Dohrn had first collected. The holotype came from Soekaranda in the Deli Serdang Regency of northwest Sumatra, below 250 metres above sea level, and Andersen wrote that it looked most similar to Peters's wrinkle-lipped bat. The species has not been recorded since that original specimen, which remains the only individual ever documented. The IUCN considers it Data Deficient as of 2016, after rating it Vulnerable from 1996 to 2008.