Colombian Oldfield Mouse vs Swampmahogany

Thomasomys dispar compared with Eucalyptus robusta

Key Differences

• Colombian Oldfield Mouse is Data Deficient while Swampmahogany is Near Threatened.

Taxonomic Classification

Rank	Colombian Oldfield Mouse	Swampmahogany
Kingdom	Animalia (động vật)	Plantae (thực vật)
Phylum	Chordata (động vật có dây sống)	Magnoliophyta (Flowering Plants)
Class	Mammalia (lớp Thú)	Magnoliopsida (Dicots)
Order	Rodentia (Bộ Gặm nhấm)	Myrtales (Bộ Đào kim nương)
Family	Cricetidae	Myrtaceae
Genus	Thomasomys	Eucalyptus
Species	Thomasomys dispar	Eucalyptus robusta

Conservation Status

Colombian Oldfield Mouse

DD — Data Deficient

Swampmahogany

NT — Near Threatened

Physical Characteristics

Attribute	Colombian Oldfield Mouse	Swampmahogany
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Colombian Oldfield Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Colombia.

Swampmahogany

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 8 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (10 countries), Asia (India, Taiwan, Vietnam), Europe (6 countries), North America (Nicaragua, Panama, United States), Oceania and the Pacific (Micronesia), and South America (Brazil). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.