Bidentate yellow-shouldered bat

The bidentate yellow-shouldered bat (Sturnira bidens) is a species of leaf-nosed bat in the family Phyllostomidae that lives in the northern Andes of South America. It was described as a new species in 1915 by the British zoologist Oldfield Thomas from a specimen collected by Walter Goodfellow in April 1914 at Baeza, Ecuador. Thomas first placed it in a genus he named Corvira, now defunct, and the name bidens is Latin for two teeth, a reference to its having only two lower incisors. The forearm measures 39.3 to 43.3 millimetres, the snout is long and narrow and the skull overall is narrow. It ranges through Peru, Ecuador, Colombia and Venezuela, in association with the Andes at elevations of 1,700 to 3,000 metres, and it was evaluated as least concern by the IUCN in 2018.