Bats affected by WNS

White-nose syndrome (WNS) is known to predominantly affect hibernating bats. More than half of the 47 bat species living in the United States and Canada rely on hibernation for winter survival.

Eleven bat species, including three endangered species and one proposed species, are already affected by WNS or exposed to the causative fungus, Pseudogymnoascus destructans (Pd).

Confirmed: Bat species identified with diagnostic symptoms of WNS:

  • Big brown bat (Eptesicus fuscus)
  • Eastern small-footed bat (Myotis leibii)
  • Gray bat (Myotis grisescens) *endangered
  • Indiana bat (Myotis sodalis) *endangered
  • Little brown bat (Myotis lucifugus)
  • Northern long-eared bat (Myotis septentrionalis)*proposed for listing
  • Tricolored bat (Perimyotis subflavus)


Pd positive: Bat species on which Pseudogymnoascus destructans has been detected, but no diagnostic sign of WNS has been documented:

  • Cave bat (Myotis velifer)
  • Southeastern bat (Myotis austroriparius)
  • Silver-haired bat (Lasionycteris noctivagans)
  • Virginia Big-Eared Bat (Corynorhinus townsendii virginianus) *endangered