page_title: Western yellow bat
section_title: Description
hierarchical_section_title: Western yellow bat / Description
caption_attribution_description: English: Lasiurus xanthinus, formerly Dasypterus ega xanthinus
context_page_description: The western yellow bat is a species of vesper bat. It is found in Mexico and the southwestern United States. This species roosts in trees such as Populus fremontii, Platanus wrightii, and Quercus arizonica. If available, the western yellow bat will use the dead fronds that encircle palm trees as a roosting site.
context_section_description: The western yellow bat is a small species, though it is larger than the southern yellow bat. Its fur is bright yellow. Individuals weigh approximately 16 g (0.56 oz). Its forearm length is 42–47 mm (1.7–1.9 in). Its dental formula is  for a total of 32 teeth.
caption: The cranial anatomy of the western yellow bat.
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