Species: Myotis yumanensis
Yuma 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
Un Murciélago - Yuma Bat - chauve-souris de Yuma
Informal Taxonomy
Animals, Vertebrates - Mammals - Bats
Formal Taxonomy
Animalia - Craniata - Mammalia - Chiroptera - Vespertilionidae - Myotis - .
Ecology and Life History
Short General Description
A small bat (Yuma myotis).
Migration
false - false - false - Location of winter roost sites unknown. A few winter records from California. A few may winter in Texas (Schmidly 1977).
Non-migrant
false
Locally Migrant
false
Food Comments
Insectivorous. Small moths are believed to be the primary food source in some areas; dipterans and ground beetles are other common prey items. Often feeds over ponds and streams, flying just above the water surface. In British Columbia, fed opportunistically on the flying stages of aquatic insects; foraged in open, uncluttered habitats over land and low over water (Brigham et al. 1992).
Reproduction Comments
Females form maternity colonies in April. Single young born late May-July (peak apparently mid-June in western Oklahoma, Caire et al. 1989). In California young born apparently from late May to mid-June; in Arizona about mid-June. Colonies disperse by the end of September. Females first breed in their second summer. In British Columbia, may delay or forego reproduction in wet years (Grindal et al. (1992).
Ecology Comments
May be locally abundant. Availability of dayroosts may be a limiting factor in some areas. Males solitary during birthing season.
Length
10
Conservation Status
NatureServe Global Status Rank
G5
Global Status Last Reviewed
1998-08-04
Global Status Last Changed
1998-08-04
Other Status
LC - Least concern
Distribution
Conservation Status Map
<img src="http://www.natureserve.org/explorer/servlet/GetMapGif?CA.BC=S5&US.AZ=S3&US.CA=S4&US.CO=S3&US.ID=S3&US.MT=S3&US.NN=S5&US.NV=S3&US.NM=S5&US.OK=S1&US.OR=S3&US.TX=S4&US.UT=S3&US.WA=S5&US.WY=S1" alt="Conservation Status Map" style="width: 475px; height: auto;" />
Global Range
GH - 200,000 to >2,500,000 square km (about 80,000 to >1,000,000 square miles) - GH - Range includes western North America from British Columbia south through the western United States to Hidalgo, Morelos, Michoacan, and Baja California, Mexico; east to Montana and western Texas. The precise range is difficult to plot due to frequent mistaken identifications of specimens (Barbour and Davis 1969).
Global Range Code
GH
Global Range Description
200,000 to >2,500,000 square km (about 80,000 to >1,000,000 square miles)