Rediscovery of Histiotus alienus Thomas, 1916 a century after its description (Chiroptera, Vespertilionidae): distribution extension and redescription

Histiotus is a Neotropical genus of bat that currently includes 11 species. The systematics has been the focus several studies over last decades. However, no broad systematic revision made, and taxonomic issues such as synonymies, use subspecies, specimens do not fit description valid species still persist, pointed out by authors. alienus was described in 1916 known only holotype. Here we present second record H. an amended diagnosis this We qualitative, quantitative, morphometric analyses based on data from 184 almost all Our establishes limits , well comprehensive comparison with congeners. also explore new diagnostic characters for provide few notes natural history results highlight skull similarities among reinforce usefulness external morphology their correct identification. Despite our insights into taxonomy genus, remain, needed.