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 Hypsugo eisentrauti Hill 1968 Hypsugo eisentrauti Hill 1968 , Bonn. Zool. Beitr., Vol. 19: 45 . Type Locality: Cameroon , Western Province, Rumpi Highlands, Dikume-Balue. Vernacular Names: Eisentraut's Pipistrelle . Distribution: Cameroon , Rwanda , Kenya , and Somalia . Conservation: IUCN 2003 and IUCN / SSC Action Plan (2001) – Lower Risk (lc) as Pipistrellus eisentrauti . Discussion: Formerly included bellieri (e.g., Koopman, 1989, 1993, 1994), which is here listed as a synonym of crassulus following Heller et al. (1994) .