It was
described by Genoways and Baker in 1975. The
holotype used for the species description was collected in July 1974 by the authors in eastern
Baie-Mahault of
Guadeloupe. They believed that it was most closely related to the
big brown bat,
Eptesicus fuscus. They placed it in the
fuscus group of the genus
Eptesicus, as defined by Davis in 1966. Before the description of the Guadeloupe big brown bat, the only other member of the
fuscus group was its identifier,
Eptesicus fuscus: the
big brown bat. Its
species name guadeloupensis is a
Latinized version of Guadeloupe, where the bat is found. ==Description==