The least big-eared bat (''Neonycteris pusilla'') is a

bat Bats are flying mammals of the order Chiroptera (). With their forelimbs adapted as wings, they are the only mammals capable of true and sustained flight. Bats are more agile in flight than most birds, flying with their very long spread-out ...

species of the family Phyllostomidae, found in northwestern

Brazil Brazil, officially the Federative Republic of Brazil, is the largest country in South America. It is the world's List of countries and dependencies by area, fifth-largest country by area and the List of countries and dependencies by population ...

and eastern

Colombia Colombia, officially the Republic of Colombia, is a country primarily located in South America with Insular region of Colombia, insular regions in North America. The Colombian mainland is bordered by the Caribbean Sea to the north, Venezuel ...

. It is the only species within its genus.

References

Bats of South America Bats of Brazil Mammals of Colombia Phyllostomidae Mammals described in 1949 {{leafnosed-bat-stub