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HOME --> CLASS MAMMALIA  --> ORDER RODENTIA  --> SUBORDER MYOMORPHA  --> SUPERFAMILY Muroidea  --> FAMILY Cricetidae  --> SUBFAMILY Sigmodontinae  --> GENUS Oligoryzomys

SPECIES Oligoryzomys flavescens

Author:Waterhouse, 1837.
Citation:Proc. Zool. Soc. Lond., 1837: 19.
Common Name:Flavescent Colilargo
Type Locality:Uruguay, Maldonado Dept., Maldonado.
Distribution:E Paraguay (Bonvicino and Weksler, 1998), SE Brazil (Rio Grande do Sul to Bahia), Uruguay, and N to SC Argentina; range limits uncertain.
Status:IUCN – Lower Risk (lc).
Comments:Chromosomal variation reported and taxonomic implications discussed by Sbalqueiro et al. (1991); allozymic polymorphisms and gene flow among populations distributed along the lower Río Paraná, EC Argentina, discussed by Chiappero et al. (1997). Morphometrically (Myers and Carleton, 1981) and karyotypically (Sbalqueiro et al., 1991) similar to O. fornesi; their level of differentiation deserves further illumination (see next). In their informal review, Carleton and Musser (1989) acknowledged three flavescens like forms from Peru, Bolivia, and Brazil; these morphs should be critically identified, and named as necessary, as part of a much-needed revision of flavescens.



    antoniae (Massoia, 1979)
    occidentalis Contreras and Rosi, 1980

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