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Abstract

Peromyscus nasutus has been considered to occur in Utah since it was first reported in the state in 1935. Authors since then have considered the distribution of P. nasutus to include southeastern Utah. However, the original Utah specimen was later reidentified as Peromyscus boylii. A query of museums revealed only 1 other specimen considered to be P. nasutus from Utah. This specimen was examined and found to be P. boylii. Thus, there is no evidence of the occurrence of P. nasutus in Utah, and the northwesternmost accepted records of this species are in the Chuska Mountains of northeastern Arizona.

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