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(1=author & date in parentheses)	Citation	Pages	Common Name	Synonyms	Type Locality	Distribution	CITES	IUCN	Comments	column3781	column3791	subtribe	CONCAT_ALTNAMES
line:xlsx:hash://sha256/181a039844a33e66a35a457b7ece741051086608e425a040051b79581d606b97!/Sheet1!/L1102	application/vnd.openxmlformats-officedocument.spreadsheetml.sheet	N/A	Otomops formosus	Otomops formosus	Otomops formosus	Otomops formosus	Otomops formosus	Otomops formosus	Otomops formosus	Otomops formosus	Otomops formosus	Otomops formosus	Otomops formosus	Otomops formosus	Otomops formosus	Otomops formosus		[MSW3] Reviewed by Boeadi (1990), Kitchener et al. (1992a), and Walston and Bates (2001).; [HMW] Otomopsformosus Chasen, 1939, Tjibadak [= Cibadak], West Java Province , Indonesia . This species is monotypic.; [batnames2022] Reviewed by Boeadi (1990), Kitchener et al. (1992 a ), and Walston and Bates (2001).; [batnames2023] Reviewed by Boeadi (1990), Kitchener et al. (1992 a ), and Walston and Bates (2001).; [batnames2025_1.7] Reviewed by Boeadi (1990), Kitchener et al. (1992a), and Walston and Bates (2001).														formosus				formosus	formosus			formosus Chasen, 1939					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.	Otomops formosus	Indonesia, Java, Tjibadak.	Chasen	1939	Treubia, 17:186.	Distribution: Known only from Java.		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	Java mastiff-bat	Java; K	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.	Chasen	1939	Treubia, 17:186.		Java.	Indonesia, Java, Tjibadak.		CHASEN	1939	Size medium (forearm length, 59-60 mm).	Distribution: Known only from Java.	No subspecies.		142	species	O. formosus	CHASEN	1939	Otomops	genus	Otomops formosus				Size medium (forearm length, 59-60 mm).	No subspecies.		3. O. formosus CHASEN 1939.	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		Otomops formosus	Otomops		formosus	Chasen		1939		Treubia	17		186		Java Giant Mastiff Bat	Indonesia, W Java, Tjibadak.	Java.	IUCN 2003 and IUCN/SSC Action Plan (2001) – Vulnerable.		Reviewed by Boeadi (1990), Kitchener et al. (1992a), and Walston and Bates (2001).	194287C9FF94BA38B19EF4E7BBF4F68F	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	659	zip:hash://sha256/ec5fd314a06aba1a7b0b72f23e54ac625ae272bd98f82f1d01f4c09627d9e8e0!/treatments-xml-main/data/19/42/87/194287C9FF94BA38B19EF4E7BBF4F68F.xml	Otomops formosus	Molossidae	Otomops	formosus	Chasen	1939	Tadaride de Java @fr | Java-Riesenbulldogfledermaus @de | Otomops de Java @es | Java Free-tailed Bat @en | Java Mastiff Bat @en | Javan Mastiff Bat @en	Otomopsformosus Chasen, 1939, Tjibadak [= Cibadak], West Java Province , Indonesia . This species is monotypic.	Endemic to West Java Province , Indonesia , known only from two localities, Cibadak and Cibodas, in the Bogor area just S ofJakarta.	Head-body 79-86 mm, tail 30-43 mm, ear ¢. 30 mm , forearm 59-60 mm; weight 26-27 g. Fur is short and velvety, deep blackish brown on head and back, paler on crown, with a distinct grayishbuff mantle with grizzled margins across neck and upper back; underparts are pale brown. Ears are large and finely covered with small horny points. Skin on forearm and ear membraneis furred.	Two males were observed (one collected) in a nesting hole of a barbet or woodpecker, in the dead limb of a rubbertree at Cibadak, at 400 m altitude, in 1938, and two males were collected from a tree hollow at Cibodas, at 1450 m altitude, in 1990. Cibadak now forms part of the urban area of Bogorcity; at the time of collection it was humid tropical forest and rubber plantations. Cibodas retains a large botanical garden and national park and the remaining habitat is volcanic, submontane, humid tropical forest.	No information.	No information.	Java Giant Mastiff Bats have been found roosting in tree hollows.	TheJava Giant Mastiff Bat has been collected only twice, on both occasions as a pair of males that were found roosting together.	Classified as Data Deficient on The IUCN Red List, because it is known from only four specimens, and has not been recorded since 1990. The number of mature individuals and threats are unknown. In addition to habitat loss, the species may be threatened by collecting, with taxidermized specimens purported to be Java Giant Mastiff Bats frequently listed for sale on online stores.	Boeadi (1990) | Chasen (1939) | Kitchener, How & Maryanto (1992) | Ralph et al. (2015)	https://zenodo.org/record/6567902/files/figure.png	98. Java Giant Mastiff Bat Otomops formosus French: Tadaride de Java / German: Java-Riesenbulldogfledermaus / Spanish: Otomops de Java Other common names: Java Free-tailed Bat , Java Mastiff Bat , Javan Mastiff Bat Taxonomy. Otomopsformosus Chasen, 1939, Tjibadak [= Cibadak], West Java Province , Indonesia . This species is monotypic. Distribution. Endemic to West Java Province , Indonesia , known only from two localities, Cibadak and Cibodas, in the Bogor area just S ofJakarta. Descriptive notes. Head-body 79-86 mm, tail 30-43 mm, ear ¢. 30 mm , forearm 59-60 mm; weight 26-27 g. Fur is short and velvety, deep blackish brown on head and back, paler on crown, with a distinct grayishbuff mantle with grizzled margins across neck and upper back; underparts are pale brown. Ears are large and finely covered with small horny points. Skin on forearm and ear membraneis furred. Habitat. Two males were observed (one collected) in a nesting hole of a barbet or woodpecker, in the dead limb of a rubbertree at Cibadak, at 400 m altitude, in 1938, and two males were collected from a tree hollow at Cibodas, at 1450 m altitude, in 1990. Cibadak now forms part of the urban area of Bogorcity; at the time of collection it was humid tropical forest and rubber plantations. Cibodas retains a large botanical garden and national park and the remaining habitat is volcanic, submontane, humid tropical forest. Food and Feeding. No information. Breeding. No information. Activity patterns. Java Giant Mastiff Bats have been found roosting in tree hollows. Movements, Home range and Social organization. TheJava Giant Mastiff Bat has been collected only twice, on both occasions as a pair of males that were found roosting together. Status and Conservation. Classified as Data Deficient on The IUCN Red List, because it is known from only four specimens, and has not been recorded since 1990. The number of mature individuals and threats are unknown. In addition to habitat loss, the species may be threatened by collecting, with taxidermized specimens purported to be Java Giant Mastiff Bats frequently listed for sale on online stores. Bibliography. Boeadi (1990), Chasen (1939), Kitchener, How & Maryanto (1992), Ralph et al. (2015).	Simmons, N.B. and A.L. Cirranello. 2022B. Bat Species of the World: A taxonomic and geographic database. Accessed on 10/11/2022.	Molossidae	Otomops formosus	Otomops		formosus	Chasen	1939	0	Treubia	0.8375	Java Giant Mastiff Bat	None.	Indonesia, W Java, Tjibadak.	Java.	Not listed.	Data Deficient	Reviewed by Boeadi (1990), Kitchener et al. (1992 a ), and Walston and Bates (2001).	Mammal Diversity Database. (2023). Mammal Diversity Database (Version 1.11) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.7830771 released 15 April 2023	Otomops formosus	23	Java Giant Mastiff Bat	Java Free-tailed Bat|Java Mastiff Bat|Javan Mastiff Bat	Theria	Placentalia	Boreoeutheria	Laurasiatheria	CHIROPTERA	VESPERTILIONIFORMES	NA	NA	VESPERTILIONOIDEA	MOLOSSIDAE	MOLOSSINAE	NA	Otomops	NA	formosus	Chasen	1939	0						Tjibadak [= Cibadak], West Java Province, Indonesia.			formosus Chasen, 1939	NA	NA	Indonesia	Asia	Indomalaya	DD	0	0	0	Otomops_formosus	0	sciname match	Otomops_formosus	0	IUCN. 2022. The IUCN Red List of Threatened Species. Version 2022-1. https://www.iucnredlist.org. Accessed on [28 September, 2022].	15645	Otomops formosus	ANIMALIA	CHORDATA	MAMMALIA	CHIROPTERA	MOLOSSIDAE	Otomops	formosus	Chasen, 1939		20000000	Otomops formosus	Data Deficient		2016	2015-12-04 00:00:00 UTC	3.1	English	This species is considered Data Deficient as there is very little information on its range, population numbers or threats. There are only four specimens of this species, and it has not been recorded again since 1990.	The original specimen may have been taken from a barbet or woodpecker in a rubber tree. It is probably a high-flier, and not too reliant on specific habitat types. The elevational range is thought to be around 400 m asl.	Major threats to this species are unknown.	There are no recent records and this species is very rarely found.	Unknown	The type locality of this species is Tjibadak in western Java, Indonesia (Simmons 2005). The species is represented by four specimens collected in western Java (two in 1939 and two in 1990). This species could be more widespread than is currently known.		Terrestrial	This species is not recorded from any protected areas. Additional survey work is required to establish its range, population status, ecology and threats.	Indomalayan		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	Otomops		formosus	Chasen	1939	0	Treubia	0.8375	Java Giant Mastiff Bat	None.	Indonesia, W Java, Tjibadak.	Java.	Not listed.	Data Deficient	Reviewed by Boeadi (1990), Kitchener et al. (1992 a ), and Walston and Bates (2001).	Otomops formosus	1005238	23	Java Giant Mastiff Bat	Java Free-tailed Bat|Java Mastiff Bat|Javan Mastiff Bat	Theria	Placentalia	Boreoeutheria	Laurasiatheria	CHIROPTERA	VESPERTILIONIFORMES	NA	NA	VESPERTILIONOIDEA	Molossidae	MOLOSSINAE	NA	Otomops	NA	formosus	Chasen	1939	0						Tjibadak [= Cibadak], West Java Province, Indonesia.			formosus Chasen, 1939	NA	NA				Indonesia	Asia	Indomalaya	DD	0	0	0	Otomops_formosus	0	sciname match	Otomops_formosus	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	Otomops_formosus	1005238	23	Java Giant Mastiff Bat	Java Free-tailed Bat|Java Mastiff Bat|Javan Mastiff Bat	Theria	Placentalia	Boreoeutheria	Laurasiatheria	Chiroptera	Yangochiroptera	NA	NA	Vespertilionoidea	Molossidae	Molossinae	NA	Otomops	NA	formosus	Chasen	0	Otomops formosus	Chasen, F.N. 1939. Four new mammals from Java. Treubia 17(3):185-188.	https://e-journal.biologi.lipi.go.id/index.php/treubia/article/viewFile/2565/2207	RMNH.MAM.15322	holotype	https://data.biodiversitydata.nl/naturalis/specimen/RMNH.MAM.15322.a | https://data.biodiversitydata.nl/naturalis/specimen/RMNH.MAM.15322.b	Tjibadak [= Cibadak], West Java Province, Indonesia.			NA	NA				Indonesia	Asia	Indomalaya	DD	0	0	0	Otomops_formosus	0	sciname match	Otomops_formosus	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	Otomops		formosus	Chasen	1939	0	Treubia	0.8375	Java Giant Mastiff Bat	None.	Indonesia, W Java, Tjibadak.	Java.	<a href='https://cites.org/eng/app/appendices.php' target='_blank'>Not Listed</a>	<a href='https://www.iucnredlist.org/species/15645/22112831/' target='_blank'>Data Deficient</a>	Reviewed by Boeadi (1990), Kitchener et al. (1992a), and Walston and Bates (2001).		Mammal Diversity Database. (2025). Mammal Diversity Database (Version 2.2) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.15007505	NA	Otomops formosus; Otomops formosus; Otomops formosus; Otomops formosus; Otomops formosus; Otomops formosus; formosus; Tadaride de Java; Java-Riesenbulldogfledermaus; Otomops de Java; Java Free-tailed Bat; Java Mastiff Bat; Javan Mastiff Bat; Java Giant Mastiff Bat; Java Free-tailed Bat; Java Mastiff Bat; Javan Mastiff Bat; Java Giant Mastiff Bat; Java Giant Mastiff Bat; O. formosus