Tricolored Bat
(aka Eastern Pipistrelle Bat)
(Perimyotis subflavus

  • Recognition

    • The smallest bat in Maryland;
    • Yellowish-brown fur is tri-colored: dark brown base, pale middle band and a dark tip;
    • Wing membranes are blackish brown;
    • Face/ears are pale brown;
    • Tragus is blunt.
    • Found solitary or in small groups.

  • Weight: one fifth of an ounce (6 g)
  • Body length: 2 3/4 - 3 3/4 in. (71-95 mm)
  • Wingspan: 8-10 in. (21-26 cm)
  • Forearm: 1 1/4 - 1 3/8 in. (33-36 mm)

Photo of Eastern Pipistrelle Bat 

  • Summer Roost: Clumps of leaves, sometimes open houses and buildings.
  • Winter Roost: Caves, rock crevices and mines.


Moths, beetles, true bugs, mosquitoes, ants and other insects.

Similar Species:

Only bat in Maryland with tri-colored fur.

Photo by: Dr. J. Scott Altenbach​