Chihuahua Gray vs Colombian Oldfield Mouse

Aphonopelma pallidum compared with Thomasomys dispar

Key Differences

• Chihuahua Gray is Least Concern while Colombian Oldfield Mouse is Data Deficient.

Taxonomic Classification

Rank	Chihuahua Gray	Colombian Oldfield Mouse
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum	Arthropoda (Gliederfüßer)	Chordata (Chordatiere)
Class	Arachnida (Spinnentiere)	Mammalia (Säugetiere)
Order	Araneae (Webspinnen)	Rodentia (Nagetiere)
Family	Theraphosidae	Cricetidae
Genus	Aphonopelma	Thomasomys
Species	Aphonopelma pallidum	Thomasomys dispar

Evolutionary Relationship

Chihuahua Gray and Colombian Oldfield Mouse share a common ancestor at the Kingdom level: Animalia. (Tier)

Conservation Status

Chihuahua Gray

LC — Least Concern

Colombian Oldfield Mouse

DD — Data Deficient

Physical Characteristics

Attribute	Chihuahua Gray	Colombian Oldfield Mouse
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Chihuahua Gray

Habitat

Typically found in terrestrial habitats from forests to deserts.

Colombian Oldfield Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Colombia.

Chihuahua Gray

The Chihuahua Gray (Aphonopelma pallidum) is a species in the genus Aphonopelma. It is currently classified as Least Concern on the IUCN Red List. Typically found in terrestrial habitats from forests to deserts.

Colombian Oldfield Mouse

<em>Thomasomys dispar</em>, commonly known as the Colombian Oldfield Mouse, is a small rodent species belonging to the genus <em>Thomasomys</em> within the family Cricetidae. This species is classified as Data Deficient, indicating that insufficient information is currently available to evaluate its conservation status with confidence. It has been documented in Colombia, where it inhabits diverse terrestrial and aquatic-adjacent environments. Members of the genus <em>Thomasomys</em> are typically associated with high-altitude Andean habitats, including páramo grasslands, shrublands, and montane forest edges, where they occupy ground-level microhabitats and burrow in soft soils. These mice are generally omnivorous, consuming seeds, plant material, and invertebrates, though specific dietary data for <em>Thomasomys dispar</em> have not been recorded. Biological traits of this species remain poorly documented in the scientific literature. The Data Deficient classification highlights the need for targeted surveys in Colombian Andean regions to determine population size, distribution, and the ecological requirements of this poorly known rodent.