''Oecomys concolor'', also known as the unicolored oecomys,Musser and Carleton, 2005 unicolored rice rat, or unicolored arboreal rice rat, is a species of

rodent Rodents (from Latin , 'to gnaw') are mammals of the order Rodentia (), which are characterized by a single pair of continuously growing incisors in each of the upper and lower jaws. About 40% of all mammal species are rodents. They are n ...

in the genus ''

Oecomys ''Oecomys'' is a genus of rodent within the tribe Oryzomyini of family Cricetidae. It contains about 17 species, which live in trees and are distributed across forested parts of South America, extending into Panama and Trinidad Trinidad i ...

'' of family

Cricetidae The Cricetidae are a family of rodents in the large and complex superfamily Muroidea. It includes true hamsters, voles, lemmings, muskrats, and New World rats and mice. At almost 608 species, it is the second-largest family of mammals, and h ...

. It is found in

tropical rainforest Tropical rainforests are rainforests that occur in areas of tropical rainforest climate in which there is no dry season – all months have an average precipitation of at least 60 mm – and may also be referred to as ''lowland equa ...

in the Amazon biome, but its range is poorly documented; it has been recorded in northwestern

Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...

, southeastern Colombia, and southern

Venezuela Venezuela (; ), officially the Bolivarian Republic of Venezuela ( es, link=no, República Bolivariana de Venezuela), is a country on the northern coast of South America, consisting of a continental landmass and many islands and islets in th ...

.Carleton et al., 2009, fig. 6

References

Literature cited

*Carleton, M.D., Emmons, L.H. and Musser, G.G. 2009
A new species of the rodent genus ''Oecomys'' (Cricetidae: Sigmodontinae: Oryzomyini) from eastern Bolivia, with emended definitions of ''O. concolor'' (Wagner) and ''O. mamorae'' (Thomas)
''American Museum Novitates'' 3661:1–32. *Costa, L., Percequillo, A., Weksler, M., Langguth, A., Patton, J. and Catzeflis, F. 2008. . In IUCN. ''IUCN Red List of Threatened Species''. Version 2009.2.
www.iucnredlist.org
. Downloaded on November 30, 2009. *Musser, G.G. and Carleton, M.D. 2005. Superfamily Muroidea. Pp. 894–1531 in Wilson, D.E. and Reeder, D.M. (eds.)
''Mammal Species of the World: a taxonomic and geographic reference''. 3rd ed
Baltimore: The Johns Hopkins University Press, 2 vols., 2142 pp. Oecomys Mammals of Colombia Fauna of the Amazon Mammals described in 1845 Taxa named by Johann Andreas Wagner {{Oecomys-stub