Abstract. We report the first record of the greater mastiff bat Eumops perotis from Oklahoma. This specimen represents a 1, km range extension from the. Geographic distribution of the greater mastiff bat. Eumops perotis is unusual in that there are two widely disjunct regions of occurrence. The northern portion. Information about the Western Mastiff Bat (Eumops perotis), a species found in the State of Texas.

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Suitable habitat for the western mastiff bat consists of extensive open areas with potential roost locations having vertical faces to drop off from and take flight, such as crevices in rock outcropings and cliff faces, tunnels and tall buildings. National Park Service, Wildlife Health.

Eumops perotis is an insectivore feeding primarily on flying insects. The Western Mastiff Bat normally prefers a colonial roosting site with fewer than members, but there are some instances when it will roost individually Burt and Grossenheider, It will often drop down and forage on the ground with its tail sticking up.

Their colonies are small, usually numbering fewer than members, and adult males can be found in maternity colonies Cockrum, ; Texas Tech, ; Ahlborn, Its pelage is short, velvety, and whitish at the roots.

Mating System polygynous Males and females of this species remain together throughout the year, including the period when young are produced. ADW doesn’t cover all species in the world, nor does it include all the latest scientific information about organisms we describe. Males attract females with secretions from their enlarged dermal gland during the mating season. There are openings on both the lower and upper edges of the slab. Eumops perotis Schinz Description. The fungus grows on, and in some cases invades, the bodies of hibernating bats and seems to result in disturbance from hibernation, causing a debilitating loss of important metabolic resources and mass deaths.


The distribution of E. Nursery roosts are located in tight rock crevices or holes in buildings at least 90 cm deep and 5 cm wide Texas Tech, ; Ahlborn, The subspecies that occurs in North America, E.

Western mastiff bat – Wikipedia

A nursery colony of these bats may contain young ranging from newborn individuals to ones already several weeks old. Twenty individuals is ejmops large colony of these bats although colonies of up to 70 are known.

While little specific information is available on population trends in Texas, severe declines have been documented in the Los Angeles basin in California, where it is considered a Species of Special Concern.

Eumops perotis western bonneted bat Facebook. To cite this page: This species is non-migratory Hall,Allen,Cockrum, These prey items are likely to be taken from surfaces such as canyon walls Cockrum ; Protis Tech, ; Ahlborn, Positive Western mastiff bats feed on various insects and may ehmops a role in controlling their populations, hence decreasing losses to agricultural products upon which these insects feed.


Coloration is dark to greyish brown dorsally and more pale ventrally. From southwestern United States western Texas to California southward to northern Argentina and southern Brazil, but not yet reported from Central America.

The range of this subspecies is principally southwest desert regions of the United States, along the border with Mexico; however, the range perptis as far north on the Pacific coast to Alameda CountyCalifornia.

Western mastiff bat

There are openings on both the lower and upper edges of the slab. The stomachs of 18 bats collected in Big Bend National Park contained moths They usually feed from ground to tree-level but may soar to heights of some 60 m in rugged terrain. Eumops perotis exhibits yearlong nocturnal activity and generally goes into daily torpor from December through February, maintaining foraging activity at night except when temperatures drop below 5 degrees C.

John Wiley and Sons, Inc. Normally only one young is produced per pregnancy, but occasionally a female may give birth to twins. In dune areas vegetation is also sparse and conditions are dry.

Tadarida brasiliensis which undergo perotia distance seasonal migrations, E.