This species roosts in trees such as Populus fremontii, Platanus wrightii, and Quercus arizonica.

[2] If available, the western yellow bat will use the dead fronds that encircle palm trees as a roosting site.

He listed it as a subspecies of the southern yellow bat, with a trinomen of Dasypterus ega xanthinus.

[7] In a 2017 follow-up to their 2015 study, Baird et al. again expressed that Aeorestes, Dasypterus, and Lasiurus should be separate genera comprising the tribe Lasiurini.

[8] Its species name "xanthinus" is from Ancient Greek xanthos, meaning "pertaining to yellow.