Eumops perotis 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Mammalia Chiroptera Molossidae

Scientific Name: Eumops perotis (Schinz, 1821)
Common Name(s):
English Western Mastiff Bat, Greater Bonneted Bat, Western Bonneted Bat
Taxonomic Notes: This taxonomic concept does not include trumbulli; see Eger (1977). The large geographic gap between the North American and South American ranges of this taxon suggests that this complex may include more than one species (Simmons 2005).

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2015
Date Assessed: 2015-07-20
Assessor(s): Barquez, R. & Diaz, M.
Reviewer(s): Solari, S.
This species is listed as Least Concern in view of its wide distribution, presumed large population, 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 from California to Texas (USA), south to Zacatecas and Hidalgo (Mexico), in western Peru, Bolivia, northern Argentina, Paraguay, Brazil and Cuba (Simmons 2005). The distribution includes Misiones in Argentina and all of Paraguay and exclude southern tip of distribution in Argentina (Barquez et al. 2006). The Cuban material may be misidentified (Mancina pers. comm.). It also includes south Colombia.
Countries occurrence:
Argentina; Bolivia, Plurinational States of; Brazil; Colombia; Ecuador; Mexico; Paraguay; Peru; United States (Arizona, California, Nevada, Texas)
Additional data:
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:This species is non-migratory (Best et al. 1996), although in Mexico apparently is a migratory species (Aragon 2005). It is a common species (Barquez pers. comm.).
Current Population Trend:Decreasing
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:The habitat consists of extensive open areas with potential roost sites having vertical faces to drop off from and take flight, such as crevices in rock outcroppings and cliff faces, tunnels and tall buildings. This species inhabits various types of open, semi-arid to arid habitats (Cockrum 1960, Allen 1987, Best et al. 1996, Ahlborn 2000). It is an insectivore (Barquez et al. 1993).

Use and Trade [top]

Use and Trade: This species is not used.

Threats [top]

Major Threat(s): It uses only select drinking sites and is severely limited by the availability of drinking water. Due to its wing structure, it is unable to drink from water sources less than 30 m long. As a consequence, Western Mastiff Bats are no longer found in many previously occupied areas and subpopulations may be in decline (Acker 2001).

Conservation Actions [top]

Conservation Actions: The recommended conservation action is to avoid loss of drinking sites and habitat. It is found in protected areas.

Errata [top]

Errata reason: Added missing Bibliography reference for Aragon (2005) which was cited in the text.

Citation: Barquez, R. & Diaz, M. 2015. Eumops perotis (errata version published in 2016). The IUCN Red List of Threatened Species 2015: e.T8247A97207171. . Downloaded on 18 June 2018.
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