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line:xlsx:hash://sha256/181a039844a33e66a35a457b7ece741051086608e425a040051b79581d606b97!/Sheet1!/L695	application/vnd.openxmlformats-officedocument.spreadsheetml.sheet	Molossus sinaloae	Molossus sinaloae	Molossus sinaloae	Molossus sinaloae	Molossus sinaloae	Molossus sinaloae	Molossus sinaloae	Molossus sinaloae	Molossus sinaloae	Molossus sinaloae	Molossus sinaloae	Molossus sinaloae	Molossus sinaloae	Molossus sinaloae	Molossus sinaloae		[MSW2] Includes trinitatus, but see Freeman (1981:158).; [MSW3] Includes trinitatus, see Dolan (1989) and Simmons and Voss (1998). Reviewed by Jennings et al. (2002).; [HMW] Molossus sinaloae J. A. Allen, 1906 , “Escuinapa, Sinaloa ,” Mexico . Specimens of M. sinaloae from Yucatan were described as M. alvarezi based on morphology. Based on genetic data, individuals of M. sinaloae from Central and South America cluster with M. alvarexi and not with individuals from Pacific slope of Mexico where the type locality of M. sinaloae is located. Therefore, distribution of M. alvarezi was expanded to South America, and distribution of M. sinaloae was restricted to western part of Mexico . Monotypic.; [batnames2022] Some specimens of sinaloae from Honduras and French Guiana were transferred to alvarezi by Loureiro et al. (2019). Includes trinitatus , see Dolan (1989) and Simmons and Voss (1998). Reviewed by Jennings et al. (2002).; [IUCN] Includes trinitatus , see Dolan (1989) and Simmons and Voss (1998). Reviewed by Jennings et al. (2002).; [batnames2023] Some specimens of sinaloae from Honduras and French Guiana were transferred to alvarezi by Loureiro et al. (2019). Includes trinitatus , see Dolan (1989) and Simmons and Voss (1998). Reviewed by Jennings et al. (2002).; [batnames2025_1.7] Some specimens of sinaloae from Honduras and French Guiana were transferred to alvarezi by Loureiro et al. (2019). Includes trinitatus, see Dolan (1989) and Simmons and Voss (1998). Reviewed by Jennings et al. (2002).						trinitatus.	sinaloae, trinitatis	sinaloae, trinitatus				sinaloae, trinitatus		sinaloae, trinitatus	Includes trinitatus , see Dolan (1989) and Simmons and Voss (1998). Reviewed by Jennings et al. (2002).	sinaloae, trinitatus		sinaloae, trinitatus	sinaloae, trinitatus, trinitatis	sinaloae, trinitatus		sinaloae J. A. Allen, 1906|trinitatus G. G. Goodwin, 1959|trinitatis Corbet & J. Edwards Hill, 1980 [incorrect subsequent spelling]		Corbet, G.B. and Hill, J.E. 1980. A World List of Mammalian Species. British Museum (Natural History), London, 226 pp.	Allen's mastiff-bat	W Mexico – N Venezuela	Honacki, J.H., Kinman, K.E. and Koeppl, J.W. 1982. Mammal Species of the World: A Taxonomic and Geographic Reference. Allen Press, Lawrence, 694 pp.	Molossus sinaloae	Mexico, Sinaloa, Esquinapa.	J. A. Allen	1906	Bull. Am. Mus. Nat. Hist., 22:236.	Distribution: Ranging from southwestern Mexico to Colombia and Suriname, including Trinidad.		Corbet, G.B. and Hill, J.E. 1991. A World List of Mammalian Species. Third edition. Oxford University Press, London, 243 pp. ISBN 0-19-854017-5	Alien's mastiff-bat	W Mexico – Costa Rica	Koopman, K.F. 1993. Order Chiroptera. Pp. 137–242 in Wilson, D.E. and Reeder, D.M. (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference. Second edition. Smithsonian Institution Press, Washington, 1206 pp.	J. A. Allen	1906	Bull. Am. Mus. Nat. Hist., 22:236.	Includes trinitatus, but see Freeman (1981:158).	Sinaloa (Mexico) to Colombia and Surinam; Trinidad.	Mexico, Sinaloa, Esquinapa.		J. A. ALLEN	1906	Size fairly large (forearm length, 46-51 mm). Dorsal hairs with pale bases.	Distribution: Ranging from southwestern Mexico to Colombia and Suriname, including Trinidad.	Two subspecies are here recognized:	M. s. sinaloae (Mexico to Costa Rica), M. s. trinitatis (Panama and South American range).	144	species	M. sinaloae	J. A. ALLEN	1906	Molossus	genus	Molossus sinaloae				Size fairly large (forearm length, 46-51 mm). Dorsal hairs with pale bases.	Two subspecies are here recognized:		3. M. sinaloae J. A. ALLEN 1906.	3	NA			Don E. Wilson & DeeAnn M. Reeder (editors). 2005. Mammal Species of the World. A Taxonomic and Geographic Reference (3rd ed), Johns Hopkins University Press, 2,142 pp. (Available from Johns Hopkins University Press, 1-800-537-5487 or (410) 516-6900, or at http://www.press.jhu.edu).	CHIROPTERA	Molossidae	Molossinae		Molossus sinaloae	Molossus		sinaloae	J. A. Allen		1906		Bull. Am. Mus. Nat. Hist.	22		236		Sinaloan Mastiff Bat	Mexico, Sinaloa, Esquinapa.	Sinaloa and Michoacan (Mexico) to Colombia, Guyana, Surinam, and French Guiana; Trinidad.	IUCN 2003 and IUCN/SSC Action Plan (2001) – Lower Risk (lc).	trinitatus Goodwin, 1959.	Includes trinitatus, see Dolan (1989) and Simmons and Voss (1998). Reviewed by Jennings et al. (2002).	194287C9FFB4BA18B49BFDA6BB02F922	Handbook of the Mammals of the World – Volume 9 Bats, Barcelona: Lynx Edicions	978-84-16728-19-0	hbmw_9_Molossidae_598.pdf.imf	hash://md5/e57bffb1ffbcba10b412f760b226ffce	627	zip:hash://sha256/ec5fd314a06aba1a7b0b72f23e54ac625ae272bd98f82f1d01f4c09627d9e8e0!/treatments-xml-main/data/19/42/87/194287C9FFB4BA18B49BFDA6BB02F922.xml	Molossus sinaloae	Molossidae	Molossus	sinaloae	J. A. Allen	1906	Molosse du Sinaloa @fr | Sinaloa-Samtfledermaus @de | Moloso de Sinaloa @es | Allen's Mastiff Bat @en | Sinaloan Free-tailed Bat @en | Trinidadian Free-tailed Bat @en	Molossus sinaloae J. A. Allen, 1906 , “Escuinapa, Sinaloa ,” Mexico . Specimens of M. sinaloae from Yucatan were described as M. alvarezi based on morphology. Based on genetic data, individuals of M. sinaloae from Central and South America cluster with M. alvarexi and not with individuals from Pacific slope of Mexico where the type locality of M. sinaloae is located. Therefore, distribution of M. alvarezi was expanded to South America, and distribution of M. sinaloae was restricted to western part of Mexico . Monotypic.	Pacific slope of Mexico in the states of S Sinaloa , Nayarit , Jalisco , Colima , Michoacan , Guerrero , Morelos , Puebla , and Chiapas .	Head-body 70-85 mm, tail 40-52 mm, ear 13-17 mm, hindfoot 9-14 mm, forearm 45-49 mm; weight 14-28 g. The Sinaloan Mastiff Bat overlaps in size with Alvarez’s Mastiff Bat ( M. alvarezi ) and is smaller than the Black Mastiff Bat ( M. rufus ) and Miller’s Mastiff Bat ( M. pretiosus ). Dorsal pelage of the Sinaloan Mastiff Bat is dull, varying from medium to dark brown; dorsal hairs have large basal pale band covering from one-quarter to one-half the hair length and are long, reaching up to 6: 5 mm on shoulders. Ventral pelage is lighter than dorsal pelage. Ears are rounded and arise from same point on forehead. Tragusis small, and antitragus is constricted at its base. Upperlip and snout are smooth and lack any medial ridge. Face, wings, and uropatagium are medium to dark brown. Skull has elongated braincase, triangular occipital region, and infraorbital foramen opening laterally in frontal view. Basioccipital pits are moderately deep. I? is elongated, with parallel tips.	Evergreen forests, lowland rainforests, dry deciduous forests, savannas, pastures, urban areas, dry and wet forest regions, and pre-montane moist tropical forests from lowlands up to elevations of ¢. 2400 m .	The Sinaloan Mastiff Batis an aerial insectivore. Coleoptera , Lepidoptera , and even seeds have been found in its feces.	Female Sinaloan Mastiff Bats can start to reproduce in their first year. On the Pacific side of Mexico , pregnant females were found in July; reproductively active males in February, May, September, and November; and young in November. No reproductively active females were found in February or September—October.	The Sinaloan Mastiff Bat starts foraging minutes before sunset to benefit from peaks in insect densities at dusk. It roosts in caves, buildings, and cracks in stonewalls; between rafters; and under fronds of coconut palms. Search calls are alternate high and low frequency pulses, with durations of 6-12 milliseconds. First call has final frequency of ¢.30 kHz, and second call has final frequency of ¢.40 kHz. Both pulses have a FM component at the start and in the end of the call with a CF component in between.	Small colonies of Sinaloan Mastiff Bats with three individuals and medium colonies with ¢.70 individuals have been reported, but structure of groups varies in the same geographical region. The Sinaloan Mastiff Bat roosts with the Southern Yellow Bat ( Lasiurus ega) and Pallas’s Longtongued Bat (Glossophaga soricina).	Classified as Least Concern on The IUCN Red List. The Sinaloan Mastiff Bat has a wide distribution and presumably large population, occurs in protected areas, and tolerates some habitat modification.	Alvarez (1968) | Freeman (1979, 1981) | Gonzalez-Ruiz et al. (2011) | Goodwin (1959a) | Hall (1981) | Ingles (1958) | Jung et al. (2014) | Lukens & Davis (1957) | Orozco-Lugo et al. (2014) | Reid (2009) | Sanchez et al. (1985) | Simmons (2005) | de la Torre (1955) | Warner et al. (1974) | Watkins et al. (1972)	https://zenodo.org/record/6772270/files/figure.png	20. Sinaloan Mastiff Bat Molossus sinaloae French: Molosse du Sinaloa / German: Sinaloa-Samtfledermaus / Spanish: Moloso de Sinaloa Other common names: Allen's Mastiff Bat , Sinaloan Free-tailed Bat , Trinidadian Free-tailed Bat Taxonomy. Molossus sinaloae J. A. Allen, 1906 , “Escuinapa, Sinaloa ,” Mexico . Specimens of M. sinaloae from Yucatan were described as M. alvarezi based on morphology. Based on genetic data, individuals of M. sinaloae from Central and South America cluster with M. alvarexi and not with individuals from Pacific slope of Mexico where the type locality of M. sinaloae is located. Therefore, distribution of M. alvarezi was expanded to South America, and distribution of M. sinaloae was restricted to western part of Mexico . Monotypic. Distribution. Pacific slope of Mexico in the states of S Sinaloa , Nayarit , Jalisco , Colima , Michoacan , Guerrero , Morelos , Puebla , and Chiapas . Descriptive notes. Head-body 70-85 mm, tail 40-52 mm, ear 13-17 mm, hindfoot 9-14 mm, forearm 45-49 mm; weight 14-28 g. The Sinaloan Mastiff Bat overlaps in size with Alvarez’s Mastiff Bat ( M. alvarezi ) and is smaller than the Black Mastiff Bat ( M. rufus ) and Miller’s Mastiff Bat ( M. pretiosus ). Dorsal pelage of the Sinaloan Mastiff Bat is dull, varying from medium to dark brown; dorsal hairs have large basal pale band covering from one-quarter to one-half the hair length and are long, reaching up to 6: 5 mm on shoulders. Ventral pelage is lighter than dorsal pelage. Ears are rounded and arise from same point on forehead. Tragusis small, and antitragus is constricted at its base. Upperlip and snout are smooth and lack any medial ridge. Face, wings, and uropatagium are medium to dark brown. Skull has elongated braincase, triangular occipital region, and infraorbital foramen opening laterally in frontal view. Basioccipital pits are moderately deep. I? is elongated, with parallel tips. Habitat. Evergreen forests, lowland rainforests, dry deciduous forests, savannas, pastures, urban areas, dry and wet forest regions, and pre-montane moist tropical forests from lowlands up to elevations of ¢. 2400 m . Food and Feeding. The Sinaloan Mastiff Batis an aerial insectivore. Coleoptera , Lepidoptera , and even seeds have been found in its feces. Breeding. Female Sinaloan Mastiff Bats can start to reproduce in their first year. On the Pacific side of Mexico , pregnant females were found in July; reproductively active males in February, May, September, and November; and young in November. No reproductively active females were found in February or September—October. Activity patterns. The Sinaloan Mastiff Bat starts foraging minutes before sunset to benefit from peaks in insect densities at dusk. It roosts in caves, buildings, and cracks in stonewalls; between rafters; and under fronds of coconut palms. Search calls are alternate high and low frequency pulses, with durations of 6-12 milliseconds. First call has final frequency of ¢.30 kHz, and second call has final frequency of ¢.40 kHz. Both pulses have a FM component at the start and in the end of the call with a CF component in between. Movements, Home range and Social organization. Small colonies of Sinaloan Mastiff Bats with three individuals and medium colonies with ¢.70 individuals have been reported, but structure of groups varies in the same geographical region. The Sinaloan Mastiff Bat roosts with the Southern Yellow Bat ( Lasiurus ega) and Pallas’s Longtongued Bat (Glossophaga soricina). Status and Conservation. Classified as Least Concern on The IUCN Red List. The Sinaloan Mastiff Bat has a wide distribution and presumably large population, occurs in protected areas, and tolerates some habitat modification. Bibliography. Alvarez (1968), Freeman (1979, 1981), Gonzalez-Ruiz et al. (2011), Goodwin (1959a), Hall (1981), Ingles (1958), Jung et al. (2014), Lukens & Davis (1957), Orozco-Lugo et al. (2014), Reid (2009), Sanchez et al. (1985), Simmons (2005), de la Torre (1955), Warner et al. (1974), Watkins et al. (1972).	Simmons, N.B. and A.L. Cirranello. 2022B. Bat Species of the World: A taxonomic and geographic database. Accessed on 10/11/2022.	Molossidae	Molossus sinaloae	Molossus		sinaloae	J. A. Allen	1906	0	Bull. Am. Mus. Nat. Hist.	1.0806	Sinaloan Mastiff Bat	<b> trinitatus </b>Goodwin, 1959.	Mexico, Sinaloa, Esquinapa	Sinaloa and Michoacan (Mexico) to Panama	Not listed.	Least Concern	Some specimens of sinaloae from Honduras and French Guiana were transferred to alvarezi by Loureiro et al. (2019). Includes trinitatus , see Dolan (1989) and Simmons and Voss (1998). Reviewed by Jennings et al. (2002).	Mammal Diversity Database. (2023). Mammal Diversity Database (Version 1.11) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.7830771 released 15 April 2023	Molossus sinaloae	23	Sinaloan Mastiff Bat	Allen's Mastiff Bat|Sinaloan Free-tailed Bat|Trinidadian Free-tailed Bat	Theria	Placentalia	Boreoeutheria	Laurasiatheria	CHIROPTERA	VESPERTILIONIFORMES	NA	NA	VESPERTILIONOIDEA	MOLOSSIDAE	MOLOSSINAE	NA	Molossus	NA	sinaloae	J. A. Allen	1906	0	Molossus_sinaloae	Allen, J. A. (1906). Mammals from the states of Sinaloa and Jalisco, Mexico, collected by J. H. Batty during 1904 and 1905. Bulletin of the American Museum of Natural History, 22, 236.	http://digitallibrary.amnh.org/handle/2246/521	AMNH 24524		"Escuinapa, Sinaloa," Mexico.			sinaloae J. A. Allen, 1906|trinitatus G. G. Goodwin, 1959	NA	NA	Mexico	North America	Nearctic|Neotropic	LC	0	0	0	Molossus_sinaloae	0	sciname match	Molossus_sinaloae	0	IUCN. 2022. The IUCN Red List of Threatened Species. Version 2022-1. https://www.iucnredlist.org. Accessed on [28 September, 2022].	13650	Molossus sinaloae	ANIMALIA	CHORDATA	MAMMALIA	CHIROPTERA	MOLOSSIDAE	Molossus	sinaloae	J.A. Allen, 1906	Includes trinitatus , see Dolan (1989) and Simmons and Voss (1998). Reviewed by Jennings et al. (2002).	20000000	Molossus sinaloae	Least Concern		2016	2016-07-01 00:00:00 UTC	3.1	English	This species is listed as Least Concern in because of its wide distribution, presumed large population, occurrence in a number of protected areas, tolerance to some degree of habitat modification, and because it is unlikely to be declining at nearly the rate required to qualify for listing in a threatened category.	This species is aerial insectivore, it can be found in evergreen and dry deciduous forest, pasture, and populated areas (Reid 2009). It roosts in caves and houses, often in large groups. In Costa Rica, 76 individuals were captured from a single roost (Timm et al. ;1989). A long-term study in Yucatan, Mexico, found this species to be the most commonly encountered molossid in the region (Bowles et al . 1990). Individuals are most active during the first 2 hours after sunset and again before dawn. The diet consists mainly of moths, with some beetles and other insects taken. In Yucatan, pregnant females have been recorded from March to June (Reid 2009). A large colony in Puerto Viejo contained at least some pregnant females in most months of the year round reproduction. However, a far large percentage were pregnant in May than in later months. (LaVal and Rodriguez-H. 2002). May be found in rural and urban areas.	Threats for this species are unknown.	This bat is uncommon to locally common (Reid 2009). Needs acoustic surveying, it is not as abundant as M. rufus (Miller pers. comm.).	Stable	This species occurs from Sinaloa and Michoacan (Mexico) to Colombia, Guyana, Surinam, and French Guiana; Trinidad (Simmons, 2005). It occurs in lowlands to 2,400 m (usually below 1,000 m).		Terrestrial	It is found in protected areas. Further studies are needed into the distribution, habitat, ecology, and threats to this species.	Neotropical		FALSE	FALSE	Global	Simmons, N. B., & Cirranello, A. L. (2023). Batnames.org Species List Version 1.4 (1.4). Zenodo. https://doi.org/10.5281/zenodo.8136157 	Molossidae	Molossus		sinaloae	J. A. Allen	1906	0	Bull. Am. Mus. Nat. Hist.	1.080556	Sinaloan Mastiff Bat	<b> trinitatus </b>Goodwin, 1959.	Mexico, Sinaloa, Esquinapa	Sinaloa and Michoacan (Mexico) to Panama	Not listed.	Least Concern	Some specimens of sinaloae from Honduras and French Guiana were transferred to alvarezi by Loureiro et al. (2019). Includes trinitatus , see Dolan (1989) and Simmons and Voss (1998). Reviewed by Jennings et al. (2002).	Molossus sinaloae	1005206	23	Sinaloan Mastiff Bat	Allen's Mastiff Bat|Sinaloan Free-tailed Bat|Trinidadian Free-tailed Bat	Theria	Placentalia	Boreoeutheria	Laurasiatheria	CHIROPTERA	VESPERTILIONIFORMES	NA	NA	VESPERTILIONOIDEA	Molossidae	MOLOSSINAE	NA	Molossus	NA	sinaloae	J. A. Allen	1906	0	Molossus_sinaloae	Allen, J. A. (1906). Mammals from the states of Sinaloa and Jalisco, Mexico, collected by J. H. Batty during 1904 and 1905. Bulletin of the American Museum of Natural History, 22, 236.	http://digitallibrary.amnh.org/handle/2246/521	AMNH 24524		"Escuinapa, Sinaloa," Mexico.			sinaloae J. A. Allen, 1906|trinitatus G. G. Goodwin, 1959	NA	NA				Mexico	North America	Nearctic|Neotropic	LC	0	0	0	Molossus_sinaloae	0	sciname match	Molossus_sinaloae	0	Burgin, C. J., Zijlstra, J. S., Becker, M. A., Handika, H., Alston, J. M., Widness, J., Liphardt, S., Huckaby, D. G., and Upham, N. S. (2025). How many mammal species are there now? Updates and trends in taxonomic, nomenclatural, and geographic knowledge. Journal of Mammalogy in revision: TBD. https://doi.org/10.1101/2025.02.27.640393	Molossus_sinaloae	1005206	23	Sinaloan Mastiff Bat	Allen's Mastiff Bat|Sinaloan Free-tailed Bat|Trinidadian Free-tailed Bat	Theria	Placentalia	Boreoeutheria	Laurasiatheria	Chiroptera	Yangochiroptera	NA	NA	Vespertilionoidea	Molossidae	Molossinae	NA	Molossus	NA	sinaloae	J. A. Allen	0	Molossus sinaloae	Allen, J.A. 1906-07-25. Mammals from the states of Sinaloa and Jalisco, Mexico, collected by J.H. Batty during 1904 and 1905. Bulletin of the American Museum of Natural History 22(12):191-262.	https://www.biodiversitylibrary.org/page/26889274	AMNH M-24524	holotype	http://portal.vertnet.org/o/amnh/mammals?id=urn-catalog-amnh-mammals-m-24524	"Escuinapa, Sinaloa," Mexico.			NA	NA				Mexico	North America	Nearctic|Neotropic	LC	0	0	0	Molossus_sinaloae	0	sciname match	Molossus_sinaloae	0	Simmons, N. B., & Cirranello, A. L. (2025). Batnames.org Species List Version 1.7 (1.7). Zenodo. https://doi.org/10.5281/zenodo.14796586	Molossidae	Molossus		sinaloae	J. A. Allen	1906	0	Bull. Am. Mus. Nat. Hist.	1.080556	Sinaloan Mastiff Bat	trinitatus Goodwin, 1959.	Mexico, Sinaloa, Esquinapa	Sinaloa and Michoacan (Mexico) to Panama	<a href='https://cites.org/eng/app/appendices.php' target='_blank'>Not Listed</a>	<a href='https://www.iucnredlist.org/species/13650/22106433/' target='_blank'>Least Concern</a>	Some specimens of sinaloae from Honduras and French Guiana were transferred to alvarezi by Loureiro et al. (2019). Includes trinitatus, see Dolan (1989) and Simmons and Voss (1998). Reviewed by Jennings et al. (2002).		Mammal Diversity Database. (2025). Mammal Diversity Database (Version 2.2) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.15007505	NA	Molossus sinaloae; Molossus sinaloae; Molossus sinaloae; Molossus sinaloae; Molossus sinaloae; Molossus sinaloae; sinaloae; trinitatus; trinitatus; sinaloae; trinitatus; Molosse du Sinaloa; Sinaloa-Samtfledermaus; Moloso de Sinaloa; Allen's Mastiff Bat; Sinaloan Free-tailed Bat; Trinidadian Free-tailed Bat; Sinaloan Mastiff Bat; Allen's Mastiff Bat; Sinaloan Free-tailed Bat; Trinidadian Free-tailed Bat; Sinaloan Mastiff Bat; Sinaloan Mastiff Bat; M. sinaloae