Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Mammalia Chiroptera Molossidae

Scientific Name: Nyctinomops macrotis
Species Authority: (Gray, 1839)
Common Name(s):
English Big Free-tailed Bat
Taxonomic Notes: Called Tadarida molossa but see Husson (1962).

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2008
Date Assessed: 2008-06-30
Assessor(s): Barquez, R., Arroyo-Cabrales, J. & Diaz, M.
Reviewer(s): Medellín, R. (Chiroptera Red List Authority) & Schipper, J. (Global Mammal Assessment Team)
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:
1996 Lower Risk/least concern (LR/lc)

Geographic Range [top]

Range Description: SW British Columbia and Iowa (USA) to SW Mexico; Colombia, Venezuela, Guyana, and Surinam to Peru, N Argentina and Uruguay; Cuba; Jamaica; Hispaniola (Simmons 2005). Not found either in Rio Grande do Sul (Reis et al. 2006) nor Uruguay (Lopez-Gonzalez 2004)
Countries occurrence:
Argentina; Brazil; Canada (British Columbia); Colombia; Cuba; Dominican Republic; Ecuador; French Guiana; Guyana; Haiti; Jamaica; Mexico; Suriname; United States (Arizona, California, Colorado, Kansas, Minnesota, Nevada, New Mexico, Oklahoma, Texas, Utah); Venezuela, Bolivarian Republic of
Upper elevation limit (metres): 2600
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: Common species (Barquez pers. comm.). Not very common in Mexico (Arita, 2005). Common in Dominican Republic (Sixto Inchaustegui pers. comm.)
Current Population Trend: Unknown
Additional data:
Population severely fragmented: No

Habitat and Ecology [top]

Habitat and Ecology: N. macrotis is a seasonal migrant throughout much of its range and it is insectivourous (Milner et al. 1990; Barquez 1999). Found in urban areas (Barquez 1999). In North America is found in dry forests and pine forests. In South America and Antillas is found in tropical evergreen forests. From sea level up to 2,600 m (Arita, 2005)
Systems: Terrestrial
Movement patterns: Full Migrant

Threats [top]

Major Threat(s): No major threats.

Conservation Actions [top]

Conservation Actions: No conservation measures cited. Found in protected areas.

Classifications [top]

1. Forest -> 1.4. Forest - Temperate
suitability: Suitable  
1. Forest -> 1.5. Forest - Subtropical/Tropical Dry
suitability: Suitable  
1. Forest -> 1.6. Forest - Subtropical/Tropical Moist Lowland
suitability: Suitable  
14. Artificial/Terrestrial -> 14.5. Artificial/Terrestrial - Urban Areas
suitability: Marginal  

In-Place Research, Monitoring and Planning
In-Place Land/Water Protection and Management
In-Place Species Management
In-Place Education
1. Research -> 1.6. Actions

Bibliography [top]

Barquez, R. M. 1999. The Bats of Argentina (Special Publications (Texas Tech University Museum)). Museum of Texas Tech University.

Husson, A. M. 1962. The bats of Suriname. Zoologische Verhandelingen 58: 1–282.

López-González, C. 2004. Ecological zoogeography of the bats of Paraguay. Journal of Biogeography 31: 33-45.

Milner, J., Jones, C. and Jones, J. K. 1990. Nyctinomops macrotis. Mammalian Species 351: 1-4.

Reis, N. R., Peracchi, A. L., Pedro, W. A. and Lima, I. P. 2006. Mamíferos do Brasil. Universidade Estadual de Londrina, Londrina.

Sanchez-Hernandez, C. 1978. Registro de murcielagos para el estado de Jalisco, Mexico. Anales del Intituto de Biologia 49: 249-255.

Simmons, N. B. 2005. Order Chiroptera. In: D. E. Wilson and D. M. Reeder (eds), Mammal Species of the World, pp. 312-529. The Johns Hopkins University Press, Baltimore, MD, USA.

Citation: Barquez, R., Arroyo-Cabrales, J. & Diaz, M. 2008. Nyctinomops macrotis. The IUCN Red List of Threatened Species 2008: e.T14996A4485729. . Downloaded on 06 October 2015.
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