New York Natural Heritage Program
Northern Long-eared Bat
Myotis septentrionalis (Trovessart, 1897)
Mammals
Family: Evening Bats and Vesper Bats (Vespertilionidae)

State Protection: Threatened
A native species likely to become an endangered species within the foreseeable future in New York (includes any species listed as federally Threatened by the United States). It is illegal to take, import, transport, possess, or sell an animal listed as Threatened, or its parts, without a permit from NYSDEC. 1) Any native species likely to become an endangered species within the foreseeable future in New York. 2) Any species listed as threatened by the U.S. Department of the Interior.

Federal Protection: Threatened
Listed as Threatened in the United States by the US Department of Interior.


State Rarity Rank: S1
A State Rarity Rank of S1 means: Typically 5 or fewer occurrences, very few remaining individuals, acres, or miles of stream, or some factor of its biology makes it especially vulnerable in New York State.

Global Rarity Rank: G1G2
A Global Rarity Rank of G1G2 means: Critically Imperiled or Imperiled globally - At very high or high risk of extinction due to rarity or other factors; typically 20 or fewer populations or locations in the world, very few individuals, very restricted range, few remaining acres (or miles of stream), and/or steep declines. More information is needed to assign a single conservation status.


Did you know?
Northern myotis (Myotis septentrionalis), also referred to as the northern long-eared bat, is one of three different species with a similar common name. Long-eared myotis (Myotis evotis) occur in western North America and brown long-eared bats (Plecotus auritus) occur in Europe. Records previously referring to Keen's myotis (Myotis keenii) in New York and eastern North America, are now known to be northern myotis which was first recognized as a distinct species, rather than a subspecies of Keen's Myotis, in 1979 (Van Zyll De Jong 1979).

State Ranking Justification [-]
Northern myotis were relatively common in New York prior to the first appearance of white-nose syndrome (WNS) in 2006. They have since declined dramatically with only an estimated 2% of the pre-WNS population numbers remaining in 2012 (NYSDEC 2012). The northern myotis is now one of the least commonly encountered species during winter hibernacula surveys (NYSDEC unpublished data).

Short-term Trends [-]

Long-term Trends [-]