Natalus stramineus 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Mammalia Chiroptera Natalidae

Scientific Name: Natalus stramineus Gray, 1838
Common Name(s):
English Mexican Funnel-eared Bat
Taxonomic Notes: Does not include N. espiritosantensis, N. jamaicensis, N. major and N. primus - those are all treated as distinct species. Arroyo-Cabrales et al. (1997) reviewed genetic variation and possible relationships of populations of major and stramineus (Simmons 2005).

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2016
Date Assessed: 2016-07-09
Assessor(s): Davalos, L. & Tejedor, A.
Reviewer(s): Solari, S.
Listed as Least Concern in view of its abundance within its restricted distribution, its presumed large population, and because its habitat is unlikely to be declining fast enough to qualify for listing in a more threatened category.
Previously published Red List assessments:

Geographic Range [top]

Range Description:The species is known from Islands of Lesser Antilles north of St Lucia Chanel: Anguilla, Antigua, Barbuda, Dominica, Guadeloupe, Marie Galante, Martinique, Montserrat, Nevis, Saba, and Sait Maarten (skeletal remains only) (Tejedor 2006, 2011).
Countries occurrence:
Anguilla; Antigua and Barbuda; Dominica; Guadeloupe; Martinique; Montserrat; Saint Kitts and Nevis
Additional data:
Upper elevation limit (metres):473
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:The species seems locally common in at least four islands (Antigua, Barbuda, Dominica and Saba; Genoways et al. 2001; S.C. Pedersen, pers. comm.)
Current Population Trend:Unknown
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:Natalus stramineus occurs from sea level to middle elevations and in habitats ranging from relatively dry (e.g., Barbuda, 925 mm annual precipitation) to rain forest (e.g., Sylvania, Dominica, 3232 mm) (Tejedor 2011). Often capured in xerophitic habitats among dry forest scrub (Pedersen 2005). Only found in dark humid caves, usually in the most remote portions of the cave system. Although its diet has never been studied, N. stramineus is surely insectivorous, as are other representatives of Natalidae. This species can fly very slowly in clutter and that it hunts by slow hawking and/or by gleaning (Tejedor 2011).

Threats [top]

Major Threat(s): Threatened by cave issues (mining and tourism), as well as by activity of hurricanes and volcanic eruptions on small islands.

Conservation Actions [top]

Conservation Actions: Its apparent requirement for humid caves, points to a limited availability of suitable habitat and therefore to a potential vulnerable status. Therefore, it is important to protect these caves.

Classifications [top]

1. Forest -> 1.5. Forest - Subtropical/Tropical Dry
1. Forest -> 1.6. Forest - Subtropical/Tropical Moist Lowland
7. Caves and Subterranean Habitats (non-aquatic) -> 7.1. Caves and Subterranean Habitats (non-aquatic) - Caves
suitability:Suitable  major importance:Yes
1. Land/water protection -> 1.1. Site/area protection
2. Land/water management -> 2.1. Site/area management

In-Place Research, Monitoring and Planning
In-Place Land/Water Protection and Management
In-Place Species Management
In-Place Education
10. Geological events -> 10.1. Volcanoes
♦ timing:Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

1. Residential & commercial development -> 1.3. Tourism & recreation areas
♦ timing:Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

11. Climate change & severe weather -> 11.4. Storms & flooding
♦ timing:Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation
  • 2. Species Stresses -> 2.1. Species mortality

3. Energy production & mining -> 3.2. Mining & quarrying
♦ timing:Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

6. Human intrusions & disturbance -> 6.1. Recreational activities
♦ timing:Ongoing    
→ Stresses
  • 2. Species Stresses -> 2.2. Species disturbance

Bibliography [top]

Arroyo-Cabrales, J., van den Bussche, R. A., Haiduk-Sigler, K., Chesser, R. K. and Baker, R. J. 1997. Genic variation in island populations of Natalus stramineus (Chiroptera: Natalidae). Occasional Papers, Museum of Texas Tech University 1771: 1-9.

Genoways, H.H., R.M. Timm, R.J. Baker, C.J. Phillips, and D.A. Schlitter. 2001. Bats of the West Indian Island of Dominica. Special Publications, Museum of Texas Tech University 43: 1-43.

IUCN. 2016. The IUCN Red List of Threatened Species. Version 2016-3. Available at: (Accessed: 07 December 2016).

Pedersen, S. 2005. Bathead. “Short Guide to the Bats of the Northern Lesser Antilles”. Available at:

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.

Tejedor, A. 2006. The type locality of Natalus stramineus (Chiroptera: Natalidae): implications for the taxonomy and biogeography of the genus Natalus. Acta Chiropterologica 8(2): 361-380.

Tejedor, A. 2011. Systematics of funnel-eared bats (Chiroptera: Natalidae). Bulletin of the American Museum of Natural History 353: 1-140.

Citation: Davalos, L. & Tejedor, A. 2016. Natalus stramineus. The IUCN Red List of Threatened Species 2016: e.T14360A22040956. . Downloaded on 25 May 2018.
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