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 Nyctalus azoreum Thomas 1901 Nyctalus azoreum Thomas 1901 , Ann. Mag. Nat. Hist., ser. 7, 8: 34 . Type Locality: Portugal , Azores , St. Michael. Vernacular Names: Azores Noctule . Distribution: Azores Isls ( Portugal ). Conservation: IUCN 2003 and IUCN / SSC Action Plan (2001) – Vulnerable. Discussion: Listed as a subspecies of leisleri by Corbet (1978 c ) , but see Palmeirim (1991) and Horácek et al. (2000).