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 Myotis grisescens A. H. Howell 1909 Myotis grisescens A. H. Howell 1909 , Proc. Biol. Soc. Wash., 22: 46 . Type Locality: USA , Tennessee , Marion Co., Nickajack Cave, near Shellmound. Vernacular Names: Gray Myotis . Distribution: Florida Panhandle to Kentucky , Indiana , Illinois , E Kansas and NE Oklahoma ( USA ). Conservation: U.S. ESA – Endangered; IUCN 2003 and IUCN / SSC Action Plan (2001) – Endangered.