Order Rodentia - Family Heteromyidae Author Wilson, Don E. Author Reeder, DeeAnn text 2005 The Johns Hopkins University Press Baltimore Mammal Species of the World: a Taxonomic and Geographic Reference (3 rd Edition), Volume 2 844 858 book chapter 0-8018-8221-4 10.5281/zenodo.7316535 Chaetodipus formosus Merriam 1889 Chaetodipus formosus Merriam 1889 , N. Amer. Fauna, 1: 17 . Type Locality: USA , Utah , Washington Co., St. George. Vernacular Names: Long-tailed Pocket Mouse . Subspecies: : Subspecies Chaetodipus formosus subsp. formosus Merriam 1889 Subspecies Chaetodipus formosus subsp. cinerascens Nelson and Goldman 1929 Subspecies Chaetodipus formosus subsp. incolatus Hall 1941 Subspecies Chaetodipus formosus subsp. infolatus Huey 1954 Subspecies Chaetodipus formosus subsp. melanurus Hall 1941 Subspecies Chaetodipus formosus subsp. mesembrinus Elliot 1904 Subspecies Chaetodipus formosus subsp. mohavensis Huey 1938 Distribution: W Utah , Nevada , E California , and NW Arizona ( USA ), and E coast of Baja California to Bahía Concepcion ( Baja California Sur , Mexico ). Conservation: IUCN – Lower Risk (lc). Discussion: Reviewed by Huey (1964) . Included in Perognathus by Hall (1981:542) and earlier workers, but allocated to Chaetodipus by Patton et al. (1981) and Hafner and Hafner (1983) . Subspecies reviewed by Williams et al. (1993) .