Species: Myotis thysanodes
Fringed Myotis
Species
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Encyclopedia of Puget Sound
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This article originally appeared in the State of Washington Bat Conservation Plan. Further information is available from the Washington Department of Fish and Wildlife.
The Washington Department of Fish and Wildlife recently released a Bat Conservation Plan for the 15 species of bats found in Washington State. All but four of these species occur within the greater Puget Sound watershed1, including:
Classification
Kingdom
Animalia
Phylum
Craniata
Class
Mammalia
Order
Chiroptera
Family
Vespertilionidae
Genus
Myotis
NatureServe
Classification
Other Global Common Names
Fringed Bat - Un Murciélago - chauve-souris à queue frangée
Informal Taxonomy
Animals, Vertebrates - Mammals - Bats
Formal Taxonomy
Animalia - Craniata - Mammalia - Chiroptera - Vespertilionidae - Myotis - See Manning (1988) for a description of the new subspecies VESPERTINUS from California, Oregon, and Washington.
Ecology and Life History
Short General Description
A small bat (fringed myotis).
Migration
false - false - false - Known to migrate, but little is known about migration distances and destinations (O'Farrell and Studier 1980). Arrives in Trans-Pecos Texas in May (Schmidly 1991).
Non-migrant
false
Locally Migrant
false
Food Comments
Insectivorous; beetles are a common prey item. Wings have a high puncture strength, which is characteristic of bats that forage by gleaning from the ground or near thick or thorny vegetation (O'Farrell and Studier 1980). Often forages close to vegetative canopy.
Reproduction Comments
Seemingly there is little variation in the timing of reproduction throughout the range. In northeastern New Mexico, copulates in fall; ovulation, fertilization, and implantation from late April to mid-May; gestation lasts 50-60 days; births late June to mid-July (O'Farrell and Studier 1973). Litter size is 1. Young can fly at 16-17 days. Colony size ranges up to several hundred; colonies begin to disperse by October.
Ecology Comments
M. THYSANODES is found with many other species including: M. EVOTIS, M. VOLANS, M. CALIFORNICUS, etc.
Length
10
Conservation Status
NatureServe Global Status Rank
G4G5
Global Status Last Reviewed
1998-08-03
Global Status Last Changed
1998-08-03
Distribution
Conservation Status Map
<img src="http://www.natureserve.org/explorer/servlet/GetMapGif?CA.BC=S2&US.AZ=S3&US.CA=S4&US.CO=S3&US.ID=S2&US.MT=S3&US.NN=S4&US.NE=S1&US.NV=S2&US.NM=S5&US.OR=S2&US.SD=S2&US.TX=S3&US.UT=S3&US.WA=S3&US.WY=S2" alt="Conservation Status Map" style="width: 475px; height: auto;" />
Global Range
H - >2,500,000 square km (greater than 1,000,000 square miles) - H - Patchy range includes western North America from southcentral British Columbia (low numbers, but known to breed; Balcombe, 1988 COSEWIC report) south through the western United States to Veracruz and Chiapas in southern Mexico. An apparently disjunct population occurs in the Black Hills region, WyomingMyotis thysanodes-South Dakota-Nebraska (O'Farrell and Studier 1980, Hall 1981). Winter range is little known. Elevational range extends from sea level to around 2,850 meters.
Global Range Code
H
Global Range Description
>2,500,000 square km (greater than 1,000,000 square miles)