Trinomys albispinus


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Trinomys albispinus
Species Authority: (I. Geoffroy, 1838)
Common Name(s):
English White-spined Spiny Rat
Proechimys albispinus (I. Geoffroy, 1838)
Taxonomic Notes: The genus Trinomys was formerly placed in the genus Proechimys, but see Lara and Patton (2000) for reasons to place this taxon in the genus Trinomys. This species was recently revised (PhD dissertation by Ximenes Gilson at Sao Paulo University) splitting T. albispinus into two species.

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2008
Date Assessed: 2008-06-30
Assessor(s): Catzeflis, F., Patton J., Percequillo, A., Bonvicino, C. & Weksler, M.
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. Species of this genus are the most abundant in forest of this region.
1996 Lower Risk/near threatened (Baillie and Groombridge 1996)

Geographic Range [top]

Range Description: The species occurs in the states of Sergipe, Bahia and Minas Gerais in northeastern Brazil (Pessôa and Reis, 2002).
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: This species is abundant in forest.
Population Trend: Unknown

Habitat and Ecology [top]

Habitat and Ecology: This rodent occurs in drier habitats than others in the genus. T. a. albispinus occurs in climax forest with some deciduous trees. T. a. sertonius inhabits typical ‘caatinga’, a climax forest of mainly deciduous trees characterized by unpredictable rainfall and semiarid conditions, with vegetation including plants of the families Cactaceae and Bromeliaceae (Pessôa and Reis, 2002). T. a. minor occurs in the Morro do Chapeu at the northern edge of the Espinhaco range in the state of Bahia, an area with rock formations at 800-2,000 m asl. From 800 to 1,000 m, the vegetation is characteristically savanna, which grades into grasslands between 1,000 and 1,100 m. Some records indicate that females are pregnant between January and June; these specimens contained two to four embryos.
Systems: Terrestrial

Threats [top]

Major Threat(s): The major threat is habitat destruction in the form of forest fragmentation and degradation.

Conservation Actions [top]

Conservation Actions: The species occurs in Sergipe protected area.

Citation: Catzeflis, F., Patton J., Percequillo, A., Bonvicino, C. & Weksler, M. 2008. Trinomys albispinus. The IUCN Red List of Threatened Species. Version 2014.3. <>. Downloaded on 31 March 2015.
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