Fisheries & Wildlife

Mammal Collection

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Thomomys mazama (western pocket gopher)

Specimen Images | FW1901 | FW2795 | FW4231 |


Class Mammalia
Order Rodentia
Family Geomyidae
Genus Thomomys
Species Thomomys mazama
Common western pocket gopher
Diet herbivore – leaves, stems, tubers and roots of grasses, forbs, and other plants
Habitat Prairies, meadows, orchards. Range limited to Pacific Northwest, rare.
Description Usually brown back with lighter belly, large black patch behind ear; chest often has white splotches. (Some populations are black.) Tip of tail is usually buff, white, or light gray and may be almost naked. Smaller than T. bulbivorus. Generally darker than T. talpoides but cannot be reliably distinguished by pelt from this species.
Use range to assist ID.
Skull Characteristics No (or small) sphenoidal fissure; small size
Notes
Links to more species information:
Smithsonian
Animal Diversity Web