Large vesper mouse

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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.[2]

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.[2]

It is particularly notable as the vector of Bolivian hemorrhagic fever.


  1. ^ Dunnum, J.; Vargas, J.; Bernal, N.; D'Elia, G.; Pardinas, U. & Teta., P. (2008). "Calomys callosus". IUCN Red List of Threatened Species. Version 2008. International Union for Conservation of Nature. Retrieved 31 March 2009. 
  2. ^ a b Musser, G.G.; Carleton, M.D. (2005). "Superfamily Muroidea". In Wilson, D.E.; Reeder, D.M. Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. pp. 1106–1107. ISBN 978-0-8018-8221-0. OCLC 62265494.