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Pipistrellus subflavus

Eastern Pipistrelle

Order: Chiroptera
Family: Vespertilionidae

Image of Pipistrellus subflavus
Pipistrellus subflavus - inset shows tri-colored hair
Click to enlarge. (106 kb)

Conservation Status: Least Concern.

Not as small as its western cousin, the eastern pipistrelle weighs in at 6 to10 g and is comparable in size to many bats in the family Vespertilionidae. Eastern pipistrelles are stronger fliers than western pipistrelles, and some migrate several hundred miles in late summer and early fall, to the caves where they hibernate. Like their cousins, female eastern pipistrelles give birth to twins. The neonates are hairless, but develop rapidly and are able to fly when they are two to three weeks old. Males have been known to live to 15 years of age; the maximum recorded longevity for females is 10 years.

Also known as:

Sexual Dimorphism:
Females are larger than males.

Range: 75-90 mm

Range: 6-01 g


Cuvier F., 1832.  "Essai de classification naturelle des vespertilions et description de plusieurs espèces de ce genre", in Nouvelles annales du Muséum d’histoire naturelle, Paris, Tome 1, p. 17.


Mammal Species of the World

Mammalian Species, American Society of Mammalogists' species account

Distribution of Pipistrellus subflavus

Image of Pipistrellus subflavus
Click to enlarge. (87kb)

Skull of Pipistrellus subflavus
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