Oryzomys (Oligoryzomys) utiaritensis J.A. Allen, 1916
Oligoryzomys nigripes is found in South America.
Oligoryzomys nigripes, also known as the black-footed colilargo[2] or the black-footed pygmy rice rat,[1] is a rodent in the genus Oligoryzomys of family Cricetidae. Oligoryzomys nigripes is a species that has been further divided into different sister taxa throughout history. It is found in different countries in South America.[3] It is a large species with long ears, dark yellow to dark brown upperparts, sharply delimited from the whitish underparts, and often a pink girdle on the chest. This species of rat spends much of its life among the trees.[4] The karyotype is 2n = 62, FNa = 78–82.[3]
The pelage colors for this species resemble brown, dark yellow, and grey.[7] This species of Oligoryzomys have small bodies and long tails.[4] The totaled head plus body length of the model species for O. nigripes is 9 cm.[8] The tail length for the model species for O. nigripes is 10.5 cm.[8] The weight of the animal ranges from 26.32 grams to 33.3 grams.[8] The eyes of this species are rounded and jet black.
Oligoryzomys nigripes is a nocturnal species of rodent.[4] They live entirely on land and many of them dwell in the trees.[4] They are proficient at climbing these trees.[9] This species is a known insectivore, but can be frugivorous. Therefore, O. nigripes is considered an omnivore.[9] They scavenge for nutrient sources in things such as fruits, insects, and seeds.[4]
^ abcWeksler, M. & Bonvicino, C.R. 2005. Taxonomy of pygmy rice rats genus Oligoryzomys Bangs, 1900 (Rodentia, Sigmodontinae) of the Brazilian Cerrado, with the description of two new species. Arquivos do Museu Nacional 63(1):119.
^ abcdeGonzález-Ittig, Raul E.; Rivera, Paula C.; Levis, Silvana C.; Calderón, Gladys E.; Gardenal, Cristina N. (June 2014). "The molecular phylogenetics of the genus O ligoryzomys (Rodentia: Cricetidae) clarifies rodent host-hantavirus associations: Rodent Host-Hantavirus Genotype Relationships". Zoological Journal of the Linnean Society. 171 (2): 457–474. doi:10.1111/zoj.12133. hdl:11336/8004.
^Leite, Y. and Patterson, B. 2008. Oligoryzomys nigripes. In IUCN. IUCN Red List of Threatened Species. Version 2009.2.
^AGRELLOS, RODRIGO; BONVICINO, CIBELE R.; ROSA, ELIZABETH SALBÉ T.; MARQUES, APARECIDO A.R.; D’ANDREA, PAULO S.; WEKSLER, MARCELO (2012-03-02). "The taxonomic status of the Castelo dos Sonhos Hantavirus reservoir, Oligoryzomys utiaritensis Allen 1916 (Rodentia: Cricetidae: Sigmodontinae)". Zootaxa. 3220 (1): 1. doi:10.11646/zootaxa.3220.1.1. ISSN1175-5334. S2CID88269086.
^ abcMario, Lara Carolina; Borghesi, Jéssica; G. Hayashi, Rafael; O. Favaron, Phelipe; N. Rodrigues, Marcio; C. Carvalho, Rafael; Miglino, Maria A. (2018-06-04). "Morphology of the Oligoryzomys nigripes respiratory system". Anatomia, Histologia, Embryologia. 47 (4): 364–371. doi:10.1111/ahe.12363. ISSN0340-2096. PMID29869399.
^ abde França Silveira Ribeiro, Martim; da Rocha, Pedro Luiz Bernardo; Mendes, Lys Angela Favaroni; Perry, Steven Franklin; Oliveira, Elisabeth Spinelli de (August 2004). "Physiological effects of short-term water deprivation in the South American sigmodontine rice rat Oligoryzomys nigripes and water rat Nectomys squamipes within a phylogenetic context". Canadian Journal of Zoology. 82 (8): 1326–1335. doi:10.1139/z04-104. ISSN0008-4301.
