Townsend's Pocket Gopher

Thomomys townsendii

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T. townsendii is one of the larger Thomomys species. Its coloration is generally dark brown to blackish. The upper incisors are smooth, lacking grooves. Cranial character…

Townsend's Pocket Gopher illustration

How to identify

T. townsendii is one of the larger Thomomys species. Its coloration is generally dark brown to blackish. The upper incisors are smooth, lacking grooves. Cranial characteristics, particularly the shape and size of the skull and teeth, are essential for distinguishing this species. Total length can range from 220-290 mm.

Range

T. townsendii is found in parts of eastern Oregon, southern Idaho, and northern Nevada.

Habitat

T. townsendii prefers deep, well-drained soils in a variety of habitats, including grasslands, sagebrush steppe, and agricultural areas. It is often found in irrigated fields and pastures.

Similar species

T. townsendii can be confused with other large Thomomys species in areas where their ranges may overlap. Careful comparison of cranial characteristics is important for accurate identification.

Name and etymology

Genus

Thomomys

Greek for mound (thomos) mouse (mys)

Origin

Language root

Sources

  • Palmer, Index Generum Mammalium (1904) ↗

    Palmer, T. S. 1904. Index Generum Mammalium: a list of the genera and families of mammals. North American Fauna 23. Government Printing Office, Washington. https://doi.org/10.5962/bhl.title.39809

Species epithet

townsendii

Honoring naturalist and ornithologist John Kirk Townsend

Origin

Person

Sources

Explore more names in the etymology index.

At a glance

Range

T. townsendii is found in parts of eastern Oregon, southern Idaho, and northern Nevada.

Habitat

T. townsendii prefers deep, well-drained soils in a variety of habitats, including grasslands, sagebrush steppe, and agricult…

Guide

Mammals of North America

Range map

Range map for Townsend's Pocket Gopher

Approximate range. © Mapbox © OpenStreetMap

Sources & further reading