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 Nycticeius aenobarbus Temminck 1840 Nycticeius aenobarbus Temminck 1840 , Monogr. Mamm., Vol. 2: 247 . Type Locality: "Amérique méridionale." . Vernacular Names: Temminck's Mysterious Bat . Distribution: Unknown; Carter and Dolan (1978) have suggested that the type and only known specimen is probably not from South America. Conservation: IUCN 2003 – Not evaluated; not considered in IUCN / SSC Action Plan (2001). Discussion: Listed as a synonym of Myotis albescens by many authors following Miller and Allen (1928) , but clearly distinct at both the genus and species level; see Husson (1962) and Carter and Dolan (1978) . The latter authors suggested that this species probably belongs with Nycticeius , but its status remains unclear. If the holotype originated in the Old World, this taxon might be referable to Scotoecus , Scotorepens , or Scoteanax .