Order Chiroptera - Family Vespertilionidae 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 1 451 529 book chapter 0-8018-8221-4 10.5281/zenodo.7316519 Idionycteris phyllotis (G. M. Allen 1916) [Corynorhinus] phyllotis G. M. Allen 1916 , Bull. Mus . Comp. Zool., 60: 352 . Type Locality: Mexico , San Luis Potosi , probably near city of San Luis Potosi (see Hall, 1981 ). Vernacular Names: Allen's Big-eared Bat . Synonyms: Idionycteris mexicanus Anthony 1923 . Distribution: Distrito Federal and Michoacan ( Mexico ) to S Utah and S Nevada ( USA ). Conservation: IUCN 2003 and IUCN / SSC Action Plan (2001) – Lower Risk (lc). Discussion: See Czaplewski (1983) .