| Day's grass mouse | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Rodentia |
| Family: | Cricetidae |
| Subfamily: | Sigmodontinae |
| Genus: | Akodon |
| Species: | A. dayi |
| Binomial name | |
| Akodon dayi Osgood, 1916 | |
Day's grass mouse (Akodon dayi) is a species of rodent in the family Cricetidae. It is found only in Bolivia.
The rodent subfamily Sigmodontinae includes New World rats and mice, with at least 376 species. Many authorities include the Neotominae and Tylomyinae as part of a larger definition of Sigmodontinae. When those genera are included, the species count numbers at least 508. Their distribution includes much of the New World, but the genera are predominantly South American, such as brucies. They invaded South America from Central America as part of the Great American Interchange near the end of the Miocene, about 5 million years ago. Sigmodontines proceeded to diversify explosively in the formerly isolated continent. They inhabit many of the same ecological niches that the Murinae occupy in the Old World.
Akodon is a genus consisting of South American grass mice. They mostly occur south of the Amazon Basin and along the Andes north to Venezuela, but are absent from much of the basin itself, the far south of the continent, and the lowlands west of the Andes. Akodon is one of the most species-rich genera of Neotropical rodents. Species of Akodon are known to inhabit a variety of habitats from tropical and tropical moist forests to altiplano and desert. Fossils are known from the late Pliocene onwards.
Lindbergh's grass mouse is a rodent species from South America. It is found in Brazil.
The Serra do Mar grass mouse or Cerrado grass mouse is a rodent species from South America. It is found in Brazil.
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 smoky grass mouse is a species of rodent in the family Cricetidae. It is found in Argentina, Bolivia and 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 thespian grass mouse or hocicudo-like akodont is a species of rodent in the family Cricetidae. It is found in Bolivia and Peru.
The Altiplano grass mouse is a species of rodent in the family Cricetidae. It is found in Bolivia, and Peru.
The Cochabamba grass mouse is a species of rodent in the family Cricetidae. It is found only in Bolivia. Its natural habitat is subtropical or tropical moist lowland forests.
The white-throated or grey-bellied grass mouse is a species of rodent in the family Cricetidae. It is found in Argentina and Bolivia.
Akodon spegazzinii, also known as Spegazzini's akodont or Spegazzini's grass mouse, is a rodent in the genus Akodon found in northwestern Argentina. It occurs in grassland and forest at 400 to 3,500 m above sea level. After the species was first named in 1897, several other names were given to various populations now included in A. spegazzinii. They are now all recognized as part of a single, widespread and variable species. Akodon spegazzinii is related to Akodon boliviensis and other members of the A. boliviensis species group. It reproduces year-round. Because it is widely distributed and common, Akodon spegazzinii is listed as "least concern" on the IUCN Red List.
The Puno grass mouse is a species of rodent in the family Cricetidae. It is found in Bolivia and Peru.
Akodon sylvanus, also known as the forest grass mouse or woodland akodont, is a species of rodent in the family Cricetidae. It is found only in a small part of northwestern Argentina.
The Chaco grass mouse is a species of rodent in the family Cricetidae. It is found in Argentina, Bolivia, and Paraguay.
The variable grass mouse is a species of rodent in the family Cricetidae. It is known only from Bolivia, where it is found at elevations from 400 to 3000 m.
Akodon caenosus is a rodent in the genus Akodon found in northwestern Argentina and south-central Bolivia. Since its description in 1918, it has been alternatively classified as a separate species or a subspecies of Akodon lutescens. The species Akodon aliquantulus, described from some very small Argentine specimens in 1999, is now recognized as a synonym of A. caenosus.
The Tarija akodont, or Tarija grass mouse, is a species in the family Cricetidae native to Bolivia, and possibly Argentina.
