Molossus molossus


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Molossus molossus
Species Authority: (Pallas, 1766)
Common Name(s):
English Pallas's Mastiff Bat
Taxonomic Notes: Includes fortis, milleri, debilis, and tropidorhynchus. Does not include aztecus, barnesi, coibensis, cherriei, and lambi; see Dolan (1989) and Simmons and Voss (1998). Includes daulensis. Antillean populations reviewed by Genoways et al. (1981) and Timm and Genoways (2003). This complex is desperately in need of revision.

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2008
Date Assessed: 2008-06-30
Assessor(s): Barquez, R., Rodriguez, B., Miller, B. & 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.

Geographic Range [top]

Range Description: This species occurs from Sinaloa and Coahuila (Mexico) to Peru, northern Argentina, Paraguay, Uruguay, Brazil, Surinam and Guianas; Greater and Lesser Antilles; Florida Keys (USA); Margarita Isl (Venezuela); Curaçao and Bonaire (Netherlands Antilles); Trinidad and Tobago (Simmons 2005).
Argentina; Belize; Bonaire, Sint Eustatius and Saba (Sint Eustatius); Brazil; Colombia; Costa Rica; Curaçao; Ecuador; El Salvador; French Guiana; Guyana; Mexico (Coahuila, Sinaloa); Nicaragua; Panama; Paraguay; Peru; Saint Martin (French part); Sint Maarten (Dutch part); Suriname; Trinidad and Tobago; United States (Florida); Uruguay; Venezuela, Bolivarian Republic of (Venezuelan Antilles)
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: Abundant species (Barques and Diaz pers. comm.).
Population Trend: Unknown

Habitat and Ecology [top]

Habitat and Ecology: Found in urban areas. Large colonies found in palm leaves, refuges (Barquez pers. comm.). They roosts in attics on the islands (Rodriguez Duran pers. comm.).
Systems: Terrestrial

Threats [top]

Major Threat(s): There are no major threats to this species.

Conservation Actions [top]

Conservation Actions: Found in protected areas. Research actions.

Bibliography [top]

Dolan, P. G. 1989. Systematics of Middle American mastiff bats of the genus Molossus. Special Publications of the Museum of Texas Tech University 29: 1–71.

Genoways, H. H., Williams, S. L. and Groex, J. A. 1981. Results of the Alcoa Foundation Suriname Expeditions. V. Noteworthy records of Surinamese mammals. Annals of Carnegie Museum 50: 319-332.

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.

Simmons, N. B. and Voss, R. S. 1998. The mammals of Paracou, French Guiana: A Neotropical lowland rainforest fauna. Part 1. Bats. Bulletin of the American Museum of Natural History 237: 1-219.

Timm, R. M. and Genoways, H. H. 2003. West Indian mammals from the Albert Schwartz Collection: Biological and historical information. Scientific Papers of the University of Kansas Natural History Museum 29: 1-47.

Citation: Barquez, R., Rodriguez, B., Miller, B. & Diaz, M. 2008. Molossus molossus. The IUCN Red List of Threatened Species. Version 2014.3. <>. Downloaded on 27 March 2015.
Disclaimer: To make use of this information, please check the <Terms of Use>.
Feedback: If you see any errors or have any questions or suggestions on what is shown on this page, please provide us with feedback so that we can correct or extend the information provided