Calomys tener 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Mammalia Rodentia Cricetidae

Scientific Name: Calomys tener (Winge, 1887)
Common Name(s):
English Delicate Vesper Mouse, Delicate Laucha
Taxonomic Notes: Will be transferred to family Cricetidae.

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2016
Date Assessed: 2016-09-10
Assessor(s): Leite, Y. & Patterson, B.
Reviewer(s): Amori, G.
This species is listed as Least Concern in because of its wide distribution, presumed large population, occurrence in a number of protected areas, tolerance to habitat modification (even likely to thrive in disturbed habitat) and because it is unlikely to be declining at nearly the rate required to qualify for listing in a threatened category.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This species occurs in the Atlantic Forest region and habitats bordering the Cerrado, south east Brazil (south Goiás, Minas Gerais, São Paulo States), in northeast Argentina (Misiones Province; Massoia 1988) and east Bolivia (Anderson1997); range limits need refinement (Musser and Carleton 2005).
Countries occurrence:
Argentina; Bolivia, Plurinational States of; Brazil
Additional data:
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:This rodent is relatively common in Brazil (Bonvicino and Reis pers. comm.) and there are no reasons to suggest that it would not be relatively common through the rest of the range (Weksler pers. comm.).
Current Population Trend:Increasing
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:This species occurs mainly in cerrado; it is also found in Atlantic forest borders (Bonvicino pers. comm.) and thrives in disturbed habitats (Marihno-Filho pers. comm.).
Generation Length (years):1-2

Threats [top]

Major Threat(s): Although habitat destruction occurs throughout the range, it is not considered to be a serious threat to this species (Marihno-Filho pers. comm.).

Conservation Actions [top]

Conservation Actions: The species occurs in several protected areas throughout the range (Marihno-Filho pers. comm.).

Errata [top]

Errata reason: This errata assessment has been created because the map was accidentally left out of the version published previously.

Citation: Leite, Y. & Patterson, B. 2016. Calomys tener (errata version published in 2017). The IUCN Red List of Threatened Species 2016: e.T3617A115066286. . Downloaded on 22 January 2018.
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