Calomys callosus
| Large vesper mouse | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Rodentia |
| Family: | Cricetidae |
| Genus: | Calomys |
| Species: | C. callosus |
| Binomial name | |
|
Calomys callosus Rengger, 1830 |
|
The large vesper mouse, Calomys callosus, is a South American rodent species of the family Cricetidae.
It is found in Argentina, Bolivia, Brazil and Paraguay.
Its karyotype has 2n = 50 and FN = 66. It was formerly synonymized with C. expulsus, but the latter has 2n = 66 and FN = 68.
It is particularly notable as the vector of Bolivian hemorrhagic fever.
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