Allen's yellow bat (Rhogeessa alleni ) is a species of vesper bat. There is some taxonomic debate surrounding this species, with some authors considering Baeodon a genus rather than a subgenus. It is endemic to Mexico.
It is a small species of bat, weighing only 5.8–8 g (0.20–0.28 oz).It has large ears, with long tragi.The tragi are rounded at the tips, with a straight or slightly concave inner margin and a slightly convex outer margin.The posterior edges of its wings are white.It has a small and narrow calcar.The head and body is 47 mm (1.9 in), while the tail is 41 mm (1.6 in) long.Its forearm length is 35 mm (1.4 in).Its dental formula is 1.1.1.33.1.2.3 for a total of 30 teeth.
It is endemic to Mexico, with its range encompassing several states in southwest Mexico.It has been documented at a range of elevations, from 125–1,990 m (410–6,529 ft) above sea level.However, most records of this species are at elevations greater than 1,000 m (3,300 ft) above sea level.Its habitat consists of tropical deciduous forests, thorny forests, deciduous forests, and xeric shrublands.
It is currently evaluated as least concern by the IUCN—its lowest conservation priority.It meets the criteria for this assessment because it has a large geographic range; its range includes protected areas; and it lacks major threats to its continued existence.However, it is infrequently encountered and is considered rare or locally uncommon.
