Mesomys hispidus


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Mesomys hispidus
Species Authority: (Desmarest, 1817)
Common Name(s):
English Spiny Tree Rat

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 because of its wide distribution, presumed large population, occurrence in a number of protected areas and tolerance to some degree of habitat modification. It is, therefore, unlikely to be declining at nearly the rate required to qualify for listing in a threatened category.

Geographic Range [top]

Range Description: This species is considered to be widespread throughout northern and western Amazonia (Patton et al., 2000). It occurs in two large overlapping areas: the first in northern Peru to northern Bolivia and eastward to the middle reaches of the Rio Jurua; the second in central Amazonia, Brazil, from the middle part of the Rio Jurua eastward to the upper Rio Urucu, and then north of the Rio Solimoes to the Rio Jau west of the Rio Negro. It is also known French Guiana, Suriname from three single localities in northern Bolivia, southern Venezuela and northern Guyana (Patton et al. 2000). Its altitudinal range is from sea level to 1,000 m asl (Orlando et al. 2003).
Bolivia, Plurinational States of; Brazil; Colombia; Ecuador; French Guiana; Guyana; Peru; Suriname; Venezuela, Bolivarian Republic of
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: The spiny tree rats of the genus Mesomys are common components of the arboreal fauna (Patton et al., 2000).
Population Trend: Unknown

Habitat and Ecology [top]

Habitat and Ecology: It is present in evergreen forest and low cloud forest. This species is most common around tree falls or disturbed areas and around villages where they inhabit house rafters (Patton et al., 2000). Reproduction occurs through the year with litter size ranging from 1 to 3, with the majority producing a single young (Patton et al. 2000).
Systems: Terrestrial

Threats [top]

Major Threat(s): There are no major threats to this species at this time.

Conservation Actions [top]

Conservation Actions: This rodent occurs in several protected areas.

Citation: Catzeflis, F., Patton J., Percequillo, A., Bonvicino, C. & Weksler, M. 2008. Mesomys hispidus. The IUCN Red List of Threatened Species. Version 2014.3. <>. Downloaded on 27 March 2015.
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