- Scientific Name
- Lasiurus xanthinus
- Family
- Vespertilionidae
- Region
- North America, USA, Arizona, California, New Mexico, Texas

Pronunciation: lay-zee-your-us zan-thigh-nuss
The Western Yellow Bat is from the family Vespertilionidae. It is found in Mexico and the southwestern United States. This species roosts in trees such as Populus fremontii, Platanus wrightii, and Quercus arizonica. There is still much to be learned about this species.