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Photo credit: Andrea Schuhmann

Perimyotis subflavus

Order: Chiroptera

Suborder: Yangochiroptera

Family: Vespertilionidae

Call characteristics:

High frequency caller (~40 kHz range)


  1/8 - 1/4 oz

(4.6 - 7.9 g)

Body Length

3 - 3 1/2 in

(7.7 – 8.9 cm)

There are various sources for bat species range maps including IUCN, NatureServe, U.S. Fish and Wildlife Service ECOS, and the National Atlas of the United States

Tricolored Bat

Tricolored Bat

The tricolored bat (previously known as the eastern pipistrelle) is one of the smallest species in North America, with a short face and large eyes and ears. Its name comes from the characteristically tri-colored fur on its back, which shifts from dark at the base, yellowish-brown in the middle, and reddish-brown at the tips. This species prefers open woodlands and woodland edges, especially areas near water. Maternity roosts can be found in dead or live foliage, while caves, mines, and other rock crevices are used for summer roosts and winter hibernation. Tricolored bats prey on flying insects such as moths, mosquitoes, and ants. This species has suffered rapid population declines due to white-nose syndrome.

Information used to populate this page was obtained from the following sources:
NatureServe Explorer
United States Fish and Wildlife Service Environmental Conservation Online System
Bat Conservation International Bat Profiles
National Atlas of the United States. (2011). North American Bat Ranges, 1830-2008. National Atlas of the United States. Available at:
Taylor, M. 2019. Bats: an illustrated guide to all species. Washington, DC: Smithsonian Books.

Conservation Status

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