Microryzomys minutus


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Microryzomys minutus
Species Authority: (Tomes, 1860)
Common Name(s):
English Forest Small Rice Rat, Montane Colilargo
Taxonomic Notes: Due to its wide distribution it is probably a species complex, a revision is required.

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2008
Date Assessed: 2008-06-30
Assessor(s): Gómez-Laverde, M. & Delgado, C.
Reviewer(s): Amori, G. (Small Nonvolant Mammal Red List Authority) & Schipper, J. (Global Mammal Assessment Team)
This species is listed as Least Concern in view of its wide distribution, presumed large population, 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 from north Venezuela, through Colombia, Ecuador and Peru, to west central Bolivia (Musser and Carletob, 2005). It has an altitudinal range of 1,500 to 4,000 m (Soriano et al. 1999; Tirira, in prep.).
Bolivia, Plurinational States of; Colombia; Ecuador; Peru; Venezuela, Bolivarian Republic of
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: This mouse is common throughout the range.
Population Trend: Unknown

Habitat and Ecology [top]

Habitat and Ecology: This species inhabits in lower montane, subalpine forest (Musser and Carleton, 2005) and paramo (B. Rivas pers. comm.). This species is terrestrial and arboreal, it is found in high mountain habitats, frequently near rocks, especially in cloud forest. Presumably it feeds on seeds and vegetation (Lord, 1999).
Systems: Terrestrial

Threats [top]

Major Threat(s): Major threats are deforestation in some parts of its range (R. Anderson pers. comm.).

Conservation Actions [top]

Conservation Actions: The species occurs in a number of protected areas.

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.

Soriano, P. J., De Pascual, A. D., Ochoa, J. and Aguilera, M. 1999. Biogeographic analysis of the mammal communities in the Venezuelan Andes. Interciencia 24(1): 17-25.

Citation: Gómez-Laverde, M. & Delgado, C. 2008. Microryzomys minutus. The IUCN Red List of Threatened Species. Version 2015.2. <>. Downloaded on 01 September 2015.
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