Oligoryzomys fornesi


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Oligoryzomys fornesi
Species Authority: (Massoia, 1973)
Common Name(s):
English Fornes’ Colilargo
Taxonomic Notes: It was considered a synonym of O. microtus by Carleton and Musser (1999).

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2008
Date Assessed: 2008-06-30
Assessor(s): Weksler, M., Bonvicino, C., D'Elia, G. & Pardinas, U.
Reviewer(s): Amori, G. (Small Nonvolant Mammal Red List Authority) & Schipper, J. (Global Mammal Assessment Team)
This species is listed as Least Concern in because of its wide distribution, presumed stable population, likely occurrence in a number of protected areas, and because it is unlikely to be declining at nearly the rate required to qualify for listing in a threatened category.

Geographic Range [top]

Range Description: This species occurs in northeast Argentina (Formosa, Chaco, Santa Fe and Corrientes provinces), east Paraguay, and south central Brazil (Goiás to Paraíba States; Bonvicino and Weksler, 1998).
Argentina; Brazil; Paraguay
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: This species is uncommon (Weksler and Bonvicino, 2005).
Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and Ecology: This species inhabits in open areas (Weksler and Bonvicino, 2005), grasslands and gallery forests/shrublands (wet Chaco).
Systems: Terrestrial

Threats [top]

Major Threat(s): Some populations are threatened by deforestation due to agriculture.

Conservation Actions [top]

Conservation Actions: This species occurs in several protected areas within its range.

Bibliography [top]

Musser, G. G. and Carleton, M. D. 2005. Superfamily Muroidea. In: D. E. Wilson and D. A. Reeder (eds), Mammal Species of the World: a geographic and taxonomic reference, pp. 894-1531. The John Hopkins University Press, Baltimore, USA.

Citation: Weksler, M., Bonvicino, C., D'Elia, G. & Pardinas, U. 2008. Oligoryzomys fornesi. The IUCN Red List of Threatened Species. Version 2015.2. <>. Downloaded on 29 August 2015.
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