Keen's myotis
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Chiroptera
Family: Vespertilionidae
Genus: Myotis
Species:
M. keenii
Binomial name
Myotis keenii
(Merriam, 1895)

Keen's myotis (Myotis keenii) is a species of vesper bat. It is found in British Columbia in Canada and in Washington and Alaska in the United States.[1] It is named after the Rev. John Henry Keen, who collected the specimen that formed the basis for the first scientific description of the species.[2] Classification for Keen's myotis formerly included the northern long-eared myotis (Myotis septentrionalis), resulting in older studies confusing the species for one another.[3]

Description

Measurements: Forearm 1.4-1.6 in., WT 0.25–0.33 oz (7.1–9.4 g). Average body length 8–9 cm, tail length 4–5 cm.[4] In appearance, Keen's myotis is very similar to other long-eared bats of the same range, with characteristic dark brown patches on the shoulders.[5]

Behavior

Keen's myotis prefers coastal habitats, but is often found in urban areas as well. It frequently roosts in trees and rock crevices.[6] It is nocturnal and insectivorous.[5] Keen's myotis probably exhibits the same breeding habits of other temperate vespertilionids, but there is little data available.[7]

Lifespan

In the wild, Keen's myotis is recorded living upwards of 12 years,[8] while in captivity, it is reported living 19 years.[7]

See also

References

  1. 1 2 Arroyo-Cabrales, J.; Álvarez-Castañeda, S.T. (2017). "Myotis keenii". IUCN Red List of Threatened Species. 2017: e.T14171A22055579. doi:10.2305/IUCN.UK.2017-2.RLTS.T14171A22055579.en.
  2. ↑ "Keen's myotis". State University of New York College of Environmental Science and Forestry. Retrieved 7 November 2010.
  3. ↑ Arroyo-Cabrales, J.; Álvarez-Castañeda, S.T. (2017). "Myotis keenii". IUCN Red List of Threatened Species. 2017: e.T14171A22055579. doi:10.2305/IUCN.UK.2017-2.RLTS.T14171A22055579.en. Retrieved 11 November 2021.
  4. ↑ "Mammals of Washington". Burke Museum. University of Washington. Retrieved 9 December 2014.
  5. 1 2 "Myotis Keenii". NatureServe Explorer. NatureServe. Retrieved 9 December 2014.
  6. ↑ "COSEWIC Assessment and Update Report on the Keen's Long-eared Bat Myotis Keenii in Canada" (PDF). Sera Registry. COSEWIC. 2003. p. iv. Retrieved 9 December 2014.
  7. 1 2 Filla, Joe. "Myotis Keenii". Animal Diversity Web. University of Michigan Museum of Zoology. Retrieved 9 December 2014.
  8. ↑ "COSEWIC Assessment and Update Report on the Keen's Long-eared Bat Myotis Keenii in Canada" (PDF). Sera Registry. COSEWIC. 2003. p. v. Retrieved 9 December 2014.
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