Akodon aerosus, also known as the highland grass mouse or Yungas akodont, is a species of rodent in the family Cricetidae. It is found in the eastern Andes from eastern Ecuador through Peru into central Bolivia.
Akodon albiventer, also known as the white-bellied grass mouse or white-bellied akodont, is a species of rodent in the family Cricetidae. It is found in the Andean highlands from southeastern Peru to southwestern Bolivia, northwestern Argentina, and far northeastern Chile at elevations from 2400 m to over 5000 m.
Akodon boliviensis, also known as the Bolivian grass mouse or Bolivian akodont, is a species of rodent in the family Cricetidae. It is found in the Andes from southeastern Peru through Bolivia into northwestern Argentina.
The Junín grass mouse is a species of rodent in the family Cricetidae. It is found only in Peru.
Koford's grass mouse is a species of rodent in the family Cricetidae. It is found only in Peru. It is named after American biologist Carl B. Koford.
The Altiplano grass mouse is a species of rodent in the family Cricetidae. It is found in Bolivia, and Peru.
The Puno grass mouse is a species of rodent in the family Cricetidae. It is found in Bolivia and Peru.
The silent grass mouse or slate-bellied akodont is a species of rodent in the family Cricetidae. It is endemic to Peru.
The cloud forest grass mouse is a species of rodent in the family Cricetidae. It is found only in Peru.
The Andean mouse is a species of rodent in the family Cricetidae. It is the only species in the genus Andinomys. It is found in Argentina, Bolivia, Chile, and Peru.
The Altiplano chinchilla mouse or achallo is a species of rodent in the family Cricetidae. It is the only species in the genus Chinchillula. It is found in Argentina, Bolivia, Chile, and Peru.
Melanomys caliginosus, also known as the dusky melanomys or dusky rice rat, is a species of rodent in the genus Melanomys of family Cricetidae. It is found from Central America, in Honduras, Nicaragua, Costa Rica, and Panama, into South America, where it occurs in Venezuela, Colombia, and Ecuador. Populations currently classified under M. caliginosus may in fact include more than one species.
Melanomys robustulus, also known as the robust melanomys or robust dark rice rat, is a species of rodent in the genus Melanomys of family Cricetidae. It is found on the eastern slope of the Andes in Ecuador.
The Andean swamp rat is a species of rodent in the family Cricetidae. It is the only species in the genus Neotomys. It is found in Argentina, Bolivia, Chile, and Peru.
The Peruvian fish-eating rat is a species of semiaquatic rodent in the family Cricetidae. It is found only in eastern Peru, where it is known from locations at elevations from 200 to 400 m.
Oligoryzomys arenalis, also known as the sandy colilargo or sandy pygmy rice rat, is a species of rodent in the genus Oligoryzomys of family Cricetidae. It is found in the Andes of Peru at 400 to 2850 m altitude, but may include more than one species.
Aegialomys xanthaeolus, also known as the yellowish oryzomys or yellowish rice rat, is a species of rodent in the family Cricetidae. It belongs to the genus Aegialomys in tribe Oryzomyini, which was not recognized as distinct from Oryzomys until 2006. It is found in coastal Ecuador and Peru. Though it is currently the only formally recognized mainland species of Aegialomys, at least one other exists. The specific name is sometimes incorrectly spelled "xantheolus", without the second "a".
The definitive leaf-eared mouse is a species of rodent in the family Cricetidae. It is found only in west central Peru, in rocky and shrub-covered areas at elevations between 2600 and 3000 m.
The Peruvian cotton rat is a species of rodent in the family Cricetidae. It is found in Ecuador and Peru.
Amphinectomys savamis, also known as the Ucayali water rat or amphibious rat, is a rodent from the Peruvian Amazon. It is placed as the only member of genus Amphinectomys in the tribe Oryzomyini of family Cricetidae. It is similar to Nectomys, but its discoverers considered it to be different enough to require its own genus. When it was described as a new genus in 1994, knowledge of the variation within Nectomys was much more limited than it is now, and it has been suggested that the status of the taxon be re-examined considering this new information. The species's karyotype, 2n = 52, falls within the known range of Nectomys.
