Small Big-eared Brown Bat
- kingdom: Animalia
- phylum: Chordata
- class: Mammalia
- order: Chiroptera
- family: Vespertilionidae
- genus: Histiotus
- species: Histiotus montanus
El Bolsón
Rio Negro
ArgentinaSantana do Livramento
Rio Grande do Sul
BrazilChonchi
Puerto Quellón
Los Lagos Region
ChileCocachacra
Arequipa
Peru