Lasiurus xanthinus 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Mammalia Chiroptera Vespertilionidae

Scientific Name: Lasiurus xanthinus
Species Authority: Thomas, 1897
Common Name(s):
English Western Yellow Bat
Taxonomic Notes: Subgenus Dasypterus. Often considered a subspecies of ega.

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2008
Date Assessed: 2008-06-30
Assessor(s): Arroyo-Cabrales, J. & Álvarez-Castañeda, S.T.
Reviewer(s): Medellín, R. & Schipper, J.
This species is listed as Least Concern in because of its wide distribution, presumed large population, occurrence in a number of protected areas, and because it is unlikely to be declining at nearly the rate required to qualify for listing in a threatened category.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This species occurs in south California, Arizona, and New Mexico south to Baja California, west and central Mexico (Simmons, 2005).
Countries occurrence:
Mexico; United States (Arizona, California, New Mexico)
Additional data:
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:It is common (Wilson and Ruff, 1999). Some populations may be migratory, although some individuals appear to be present year-round, even in the northern most portion of the range. Western yellow bats probably do not hibernate; activity has been observed year round in both the southern and northern portions of the range. Capture sites are often associated with water features (e.g. stock tanks, ponds, streams, and rivers) in open grassy areas and scrub, as well as canyon and riparian situations.
Current Population Trend:Stable
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:This species occupies a range of habitats of extremely arid areas to dry areas. It inhabits savannas, secluded woodlands, regions dominated by pasture or croplands, and even tolerates residential areas. It is insectivorous. It often roosts in trees, where it generally hangs from the midrib of a leaf using its hind claws and possibly its thumbs. Mating probably occurs in autumn; the litter size in this species varies from one to four, with three being most common (Wilson and Ruff, 1999). Western yellow bats are thought to be noncolonial. Individuals usually roost in trees, hanging from the underside of a leaf. Usually two babies are born in June, but the presence of up to four embryos suggests that size of litter may vary from two to four.

Threats [top]

Major Threat(s): Probably one of the primary threats in the U.S., however, is the cosmetic trimming of palm fronds. The use of pesticides in date palm and other orchards may also constitute a threat to both roosting bats and the insects upon which they forage. Domestic cats, whether pets or feral, may be a significant source of predation, as they are for many lizards, songbirds, and rodents. Few threats for the survival for this bat can be reported.

Conservation Actions [top]

Conservation Actions: Avoid habitat destruction. It occurs in several protected areas.

Citation: Arroyo-Cabrales, J. & Álvarez-Castañeda, S.T. 2008. Lasiurus xanthinus. The IUCN Red List of Threatened Species 2008: e.T41532A10492544. . Downloaded on 23 May 2017.
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