Distribution
The Great Basin pocket mouse occurs in the Columbia River Basin and the Great Basin and adjacent lands. It is distributed from south-central British Columbia and eastern Washington south to southeastern California, Nevada and northern Arizona, and east to southeastern Montana and Wyoming. Distribution of subspecies is:
- Perognathus parvus bullatus: (Durrant and Lee) – central and east-central Utah
- P. p. clarus (Goldman) – extreme southwestern Montana; southeastern Idaho; extreme north-central Utah; extreme southwestern Wyoming
- P. p. columbianus (Merriam) – central and southern Washington
- P. p. idahoensis (Goldman) – south-central Idaho
- P. p. laingi (Anderson) – south-central British Columbia
- P. p. lordi (Gray) – extreme south-central British Columbia; central and eastern Washington; northwestern Idaho
- P. p. mollipilosus (Coues) – south-central Oregon; north-central and northeastern California
- P. p. olivaceus (Merriam) – most of Nevada; eastern California; extreme southeastern Oregon; southern Idaho; western Colorado; the most widely distributed subspecies
- P. p. parvus (Peale) – southeastern Washington; central and eastern Oregon
- P. p. trumbullensis (Benson) – southern Colorado; northern Arizona
- P. p. yakimensis (Broadbooks) – south-central Washington
The yellow-eared pocket mouse occurs on the eastern slope of the Tehachapi Mountains in Kern County, California. It is not certain whether its distribution is disjunct or joins that of P. parvus olivaceus.
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