Patagonian chinchilla mouse

The Patagonian chinchilla mouse (Euneomys chinchilloides) is a species of rodent in the family Cricetidae.[2] It was first described by George Robert Waterhouse in 1839.[3] It is found in Tierra del Fuego and neighboring areas of southernmost Argentina and Chile.[1]

Patagonian chinchilla mouse
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Rodentia
Family: Cricetidae
Subfamily: Sigmodontinae
Genus: Euneomys
Species:
E. chinchilloides
Binomial name
Euneomys chinchilloides
(Waterhouse, 1839)

Taxonomy

Euneomys chinchilloides is the current name for the Patagonian chinchilla mouse.

Distribution and habitat

Euneomys chinchilloides can be found in the Tierra del Fuego, and are generally widespread in mainland Patagonia.[4] They are also fairly abundant in the Sierras de Tecka, a region situated in the Andes mountains.[5] Their habitat consists of scree that is windswept and bare.[6]

Life history

Morphology

The genus Euneomys are described as having medium to large body size. They have short tails and dense fur. Their molars are hypsodont.[7]

Measurements of the body length, including the head, of Euneomys chinchilloides ranges from 103–143 mm. Tail length ranges from 62–90 mm. Hindfoot length ranges from 25–30 mm. The length of the ear ranges from 18.5-22.2 mm.[8]

Ecology

The genus Euneomys are herbivorous and nocturnal.[7]

Genetics

Euneomys chinchilloides have 34 chromosomes, although some specimens exhibited an extra pair of chromosomes.[9]

References
  1. Pardinas, U.; D'Elia, G. (2019). "Euneomys chinchilloides". IUCN Red List of Threatened Species. 2019: e.T8256A22352322. Retrieved 3 February 2020.
  2. Musser, G.G.; Carleton, M.D. (2005). "Superfamily Muroidea". In Wilson, D.E.; Reeder, D.M (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. p. 1114. ISBN 978-0-8018-8221-0. OCLC 62265494.
  3. Tate, G. H. H. (George Henry Hamilton), 1894-1953. (1932). The taxonomic history of the South American cricetid genera Euneomys (subgenera Euneomys and Galenomys), Auliscomys, Chelemyscus, Chinchillula, Phyllotis, Paralomys, Graomys, Eligmodontia and Hesperomys. American Museum of Natural History. OCLC 31840168.CS1 maint: multiple names: authors list (link)
  4. Pardiñas, Ulyses F. J.; Teta, Pablo; D'Elía, Guillermo; Lessa, Enrique P. (June 2011). "The evolutionary history of sigmodontine rodents in Patagonia and Tierra del Fuego: SIGMODONTINE RODENTS OF FUEGO-PATAGONIA". Biological Journal of the Linnean Society. 103 (2): 495–513. doi:10.1111/j.1095-8312.2011.01679.x.
  5. Schiaffini, Mauro I.; Giménez, Analía L.; Martin, Gabriel M. (2011-12-01). "Didelphimorphia and Rodentia (Mammalia) from Sierras de Tecka and surrounding areas, northwestern Chubut, Argentina". Check List. 7 (6): 704. doi:10.15560/11005. ISSN 1809-127X.
  6. Pardiñas, Ulyses F. J.; Teta, Pablo; Sauthier, Daniel Udrizar (2008-07-01). "Mammalia, Didelphimorphia and Rodentia, southwest of the province of Mendoza, Argentina". Check List. 4 (3): 218. doi:10.15560/4.3.218. ISSN 1809-127X.
  7. PARDIÑAS, ULYSES F. J.; TETA, PABLO; D'ELÍA, GUILLERMO; LESSA, ENRIQUE P. (2011-05-31). "The evolutionary history of sigmodontine rodents in Patagonia and Tierra del Fuego". Biological Journal of the Linnean Society. 103 (2): 495–513. doi:10.1111/j.1095-8312.2011.01679.x. ISSN 0024-4066.
  8. Reise, Detlef; Gallardo, Milton H. (1990). "A taxonomic study of the South American genus Euneomys (Cricetidae, Rodentia)" (PDF). Revista Chilena de Historia Natural. 63: 73–82 – via Google Scholar.
  9. Ojeda, Agustina A.; Novillo, Agustina; Ovejero, Ramiro J. A.; Cuello, Pablo A.; Lanzone, Cecilia; Borisenko, Alex V.; Braun, Janet K.; Mares, Michael A.; Ojeda, Ricardo A. (2014-10-24). "A cytogenetic, molecular genetic and morphological study of Patagonian chinchilla mice Euneomys (Rodentia, Cricetidae) in the Southern Central Andes". Mammal Research. 60 (1): 61–69. doi:10.1007/s13364-014-0200-2. ISSN 2199-2401. S2CID 3939054.
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