The Popayán Oldfield mouse (''Thomasomys popayanus''), also called the "Popayán thomasomys", is a species of rodent in the family Cricetidae. It is present in the Andes of southwestern and central western

Colombia Colombia (, ; ), officially the Republic of Colombia, is a country in South America with insular regions in North America—near Nicaragua's Caribbean coast—as well as in the Pacific Ocean. The Colombian mainland is bordered by the Car ...

, at elevations from 1800 to 3200 m. It has been found in

páramo Páramo () can refer to a variety of alpine tundra ecosystems located in the Andes Mountain Range, South America. Some ecologists describe the páramo broadly as "all high, tropical, montane vegetation above the continuous timberline". A narrower ...

, montane forest, and

secondary forest A secondary forest (or second-growth forest) is a forest or woodland area which has re-grown after a timber harvest or clearing for agriculture, until a long enough period has passed so that the effects of the disturbance are no longer evident. ...

. It was formerly considered a subspecies of '' T. aureus''. '' T. nicefori'' ( Thomas, 1921), presently considered a synonym, will likely be raised to the status of a separate species. The specific name comes from the Colombian city of Popayán.

References

Mammals of Colombia Thomasomys Mammals described in 1912 Páramo fauna {{Thomasomys-stub