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line:xlsx:hash://sha256/181a039844a33e66a35a457b7ece741051086608e425a040051b79581d606b97!/Sheet1!/L895	application/vnd.openxmlformats-officedocument.spreadsheetml.sheet	N/A	N/A	N/A	N/A	N/A	N/A	Myotis izecksohni	Myotis izecksohni	Myotis izecksohni	Myotis izecksohni	Myotis izecksohni	Myotis izecksohni	Myotis izecksohni	Myotis izecksohni	Myotis izecksohni		[HMW] Myotis izecksohni Moratelli a al, 2011 , “Fazenda Mana Brandina ( 22°36' S , 43°27'W ), Tingua Biological Reserve, Rio de Janeiro State , Brazil , 760 m above sea level.” Subgenus Pizonyx; albescens species group. Myotis izecksohni was described from seven specimens originally identified as M. le vis. Additional specimens from Brazil were previously identified as M. nigricans . Monotypic.; [MDD2022] recently described; [MDD2023] recently described; [MDD2025_2.0] recently described; [MDD2025_2.2] recently described														izecksohni				izecksohni 	izecksohni 			izecksohni Moratelli, A. L. Peracchi, Dias, & J. A. de Oliveira, 2011						N/A																																								NA																											4C3D87E8FF486AF0FA919EB31B6FB8E1	Handbook of the Mammals of the World – Volume 9 Bats, Barcelona: Lynx Edicions	978-84-16728-19-0	hbmw_9_Vespertilionidae_716.pdf.imf	hash://md5/b004ff90fffb6a44fffc96591e00bb32	941	zip:hash://sha256/ec5fd314a06aba1a7b0b72f23e54ac625ae272bd98f82f1d01f4c09627d9e8e0!/treatments-xml-main/data/4C/3D/87/4C3D87E8FF486AF0FA919EB31B6FB8E1.xml	Myotis izecksohni	Vespertilionidae	Myotis	izecksohni	Moratelli et al.	2011	Murin d'lzecksohn @fr | German @en | zecksohn-Mausohr @en | Ratonero de @es | zecksohn @en	Myotis izecksohni Moratelli a al, 2011 , “Fazenda Mana Brandina ( 22°36' S , 43°27'W ), Tingua Biological Reserve, Rio de Janeiro State , Brazil , 760 m above sea level.” Subgenus Pizonyx; albescens species group. Myotis izecksohni was described from seven specimens originally identified as M. le vis. Additional specimens from Brazil were previously identified as M. nigricans . Monotypic.	From SE & S Brazil to N Argentina .	Head-body ¢. 46—64 mm , tail 35-42 mm , ear 8-7-13- 2 mm , hindfoot 7-9 mm , forearm 33.-1-38- 8 mm ; weight 5-9 g . Fur is long (dorsal fur 7-8-8- 5 mm , ventral fur 6- 2-7 mm ) and silky; dorsal hairs are bicolored, with dark bases (two-thirds the total length), dark brown to medium brown tips, and slightly contrasting bases and tips; ventral hairs are bicolored, with dark to medium-brown bases (two-third the total length), light-brown tips, and bases and tips contrasting more than in dorsal fur. Ears are of medium length, extending forward halfway from eye to nostril. Membranes are medium brown; plagiopatagium is broadly attached to foot at base of toes. Fringe of hairs along trailing edge of uropatagium is absent, although some hairs can be present. Skull is moderately large (greatest length of skull 13-2-14- 9 mm ), with long narrow rostrum, narrow interorbital constriction, and long and flattened braincase; supraoccipital region is rounded; and sagittal crest is generally absent, but some specimens have very low sagittal crest. P? is in tooth row, not crowded to lingual side, smaller than P?, and visible in lateral view. Wing morphology is typical of aerial insectivore that uses cluttered spaces.	Atlantic Forest, semideciduous forest, dense ombrophilous forest, dense rainforest, and transition between Atlantic Forest and cerrado biomes with forests of Araucaria angustifolia ( Araucariaceae ) and savanna patches at elevations of 250-1200 m (apparently more frequent above 600 m ).	Izecksohn’s Myotis is an aerial insectivore that forages in forested areas and over water.	No information.	Izecksohn’s Myotis emerges before sunset. In Brazilian Atlantic Forest, most individuals are caught in the first three hours after sunset in mist nets at ground level on trails inside forests or over watercourses. It roosts in caves, rocky crevices, and ruins of an abandoned church bordered by late successional secondary forest.	No information.	Classified as Data Deficient on The IUCN Red List. 1zecksohn’s Myotis is known from very few localities and does not seem to be abundant. Most of its distribution is in highly threatened Atlantic Forest of southern and south-eastern Brazil .	Barquez et al. (2017) | Dias et al. (2015) | Moratelli, Peracchi, Dias & Oliveira (2011) | Solari (2017h)	https://zenodo.org/record/6398781/files/figure.png	404. Izecksohn’s Myotis Myotis izecksohni French: Murin d'lzecksohn / German: Izecksohn-Mausohr / Spanish: Ratonero de Izecksohn Taxonomy. Myotis izecksohni Moratelli a al, 2011 , “Fazenda Mana Brandina ( 22°36' S , 43°27'W ), Tingua Biological Reserve, Rio de Janeiro State , Brazil , 760 m above sea level.” Subgenus Pizonyx; albescens species group. Myotis izecksohni was described from seven specimens originally identified as M. le vis. Additional specimens from Brazil were previously identified as M. nigricans . Monotypic. Distribution. From SE & S Brazil to N Argentina . Descriptive notes. Head-body ¢. 46—64 mm , tail 35-42 mm , ear 8-7-13- 2 mm , hindfoot 7-9 mm , forearm 33.-1-38- 8 mm ; weight 5-9 g . Fur is long (dorsal fur 7-8-8- 5 mm , ventral fur 6- 2-7 mm ) and silky; dorsal hairs are bicolored, with dark bases (two-thirds the total length), dark brown to medium brown tips, and slightly contrasting bases and tips; ventral hairs are bicolored, with dark to medium-brown bases (two-third the total length), light-brown tips, and bases and tips contrasting more than in dorsal fur. Ears are of medium length, extending forward halfway from eye to nostril. Membranes are medium brown; plagiopatagium is broadly attached to foot at base of toes. Fringe of hairs along trailing edge of uropatagium is absent, although some hairs can be present. Skull is moderately large (greatest length of skull 13-2-14- 9 mm ), with long narrow rostrum, narrow interorbital constriction, and long and flattened braincase; supraoccipital region is rounded; and sagittal crest is generally absent, but some specimens have very low sagittal crest. P? is in tooth row, not crowded to lingual side, smaller than P?, and visible in lateral view. Wing morphology is typical of aerial insectivore that uses cluttered spaces. Habitat. Atlantic Forest, semideciduous forest, dense ombrophilous forest, dense rainforest, and transition between Atlantic Forest and cerrado biomes with forests of Araucaria angustifolia ( Araucariaceae ) and savanna patches at elevations of 250-1200 m (apparently more frequent above 600 m ). Food and Feeding. Izecksohn’s Myotis is an aerial insectivore that forages in forested areas and over water. Breeding. No information. Activity patterns. Izecksohn’s Myotis emerges before sunset. In Brazilian Atlantic Forest, most individuals are caught in the first three hours after sunset in mist nets at ground level on trails inside forests or over watercourses. It roosts in caves, rocky crevices, and ruins of an abandoned church bordered by late successional secondary forest. Movements, Home range and Social organization. No information. Status and Conservation. Classified as Data Deficient on The IUCN Red List. 1zecksohn’s Myotis is known from very few localities and does not seem to be abundant. Most of its distribution is in highly threatened Atlantic Forest of southern and south-eastern Brazil . Bibliography. Barquez et al. (2017), Dias et al. (2015), Moratelli, Peracchi, Dias & Oliveira (2011), Solari (2017h).	Simmons, N.B. and A.L. Cirranello. 2022B. Bat Species of the World: A taxonomic and geographic database. Accessed on 10/11/2022.	Vespertilionidae	Myotis izecksohni	Myotis	Unassigned-Myotis	izecksohni	Moratelli, Peracchi, Dias & Oliveira	2011	0	Z. S&auml;ugetierkd.	76(5): 597	Izecksohn&apos;s Myotis	None.	Brazil, Rio de Janiero State, Tingua Biological Reserve, Fazenda Maria Brandina	Brazil, Rio de Janiero and Parana States	Not listed.	Data Deficient		Mammal Diversity Database. (2023). Mammal Diversity Database (Version 1.11) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.7830771 released 15 April 2023	Myotis izecksohni	23	Izecksohn's Myotis		Theria	Placentalia	Boreoeutheria	Laurasiatheria	CHIROPTERA	VESPERTILIONIFORMES	NA	NA	VESPERTILIONOIDEA	VESPERTILIONIDAE	MYOTINAE	NA	Myotis	Pizonyx	izecksohni	Moratelli, Peracchi, Dias, & J. A. Oliveira	2011	0	Myotis_izecksohni	Moratelli, R., Peracchi, A. L., Dias, D., & de Oliveira, J. A. (2011). Geographic variation in South American populations of Myotis nigricans (Schinz, 1821)(Chiroptera, Vespertilionidae), with the description of two new species. Mammalian Biology, 76(5), 597.	https://link.springer.com/article/10.1016/j.mambio.2011.01.003	UFRRJ 6675		"Fazenda Maria Brandina (22°36'S, 43°27'W), Tinguá Biological Reserve, Rio de Janeiro State, Brazil, 760 m above sea level."	-22.6	-43.45	izecksohni Moratelli, Peracchi, Dias, & J. A. Oliveira, 2011	recently described	Moratelli, R., Peracchi, A. L., Dias, D., & de Oliveira, J. A. (2011). Geographic variation in South American populations of Myotis nigricans (Schinz, 1821)(Chiroptera, Vespertilionidae), with the description of two new species. Mammalian Biology, 76(5), 592-607.	Brazil|Argentina	South America	Neotropic	DD	0	0	0	Myotis_izecksohni	0	unmatched	NA	1	IUCN. 2022. The IUCN Red List of Threatened Species. Version 2022-1. https://www.iucnredlist.org. Accessed on [28 September, 2022].	90000000	Myotis izecksohni	ANIMALIA	CHORDATA	MAMMALIA	CHIROPTERA	VESPERTILIONIDAE	Myotis	izecksohni	Moratelli, Peracchi, Dias &; de Oliveira, 2011		90000000	Myotis izecksohni	Data Deficient		2017	2016-12-21 00:00:00 UTC	3.1	English	This species is listed as Data Deficient because it has been distinguished only recently, thus hampering a complete assessment of its populations and/or distribution status. It is known from very few localities, but it does not seem to be rare (neither abundant); however, several aspects on its biology are still unknown. It is restricted to the Atlantic rainforests of southern and southeastern Brazil, a highly threatened habitat. It has been recorded at several protected areas over that region, thus protecting part of its populations.	<p>All ;M. izecksohni ;were captured in mountainous forests between 760 and 1,000 m above sea level. Two animals were caught in mist nets placed along trails in secondary forest. One was collected in a clearing surrounded by secondary forest. ;Four animals were caught in the first three hours after dusk in ground-level mist nets across a small creek (2 m or less in depth) in late successional secondary forest. All of them were caught in Rio de Janeiro conservation units. The specimens from Campinhos State Park, Paraná, were caught in caves and trails near the entrance of caves (Moratelli et al. 2011).</p>	At this time, specific threats to this species are unknown.	Three specimens were caught in roosts, one of which was in a rocky crevice, and the others in the ruins of an abandoned church bordered by a late successional secondary forest (Moratelli et al.  2011). Based on the records reported in the original description, the species does not seem rare, neither abundant, at any of the known localities.	Unknown	<p>Currently, Myotis izecksohni is known only from four localities, two of them in Rio de Janeiro State and two in Paraná State, southern Brazil (Moratelli et al.  2011). ;The species could occur in other southeastern and southern Brazilian Atlantic Forest localities in the states of São Paulo, Paraná, Santa Catarina and Rio Grande do Sul, as well as in Uruguay. ;</p>		Terrestrial	Several of the specimens from Rio de Janeiro and Parana states were caught at protected areas (conservation units), thus securing protection of the main habitat (Atlantic rainforests) occupied by the 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 	Vespertilionidae	Myotis	Unassigned - Myotis	izecksohni	Moratelli, Peracchi, Dias & Oliveira	2011	0	Z. S&auml;ugetierkd.	76(5): 597	Izecksohn&apos;s Myotis	None.	Brazil, Rio de Janiero State, Tingua Biological Reserve, Fazenda Maria Brandina	Brazil, Rio de Janiero and Parana States	Not listed.	Data Deficient		Myotis izecksohni	1005423	23	Izecksohn's Myotis		Theria	Placentalia	Boreoeutheria	Laurasiatheria	CHIROPTERA	VESPERTILIONIFORMES	NA	NA	VESPERTILIONOIDEA	Vespertilionidae	MYOTINAE	NA	Myotis	Pizonyx	izecksohni	Moratelli, Peracchi, Dias, & J. A. Oliveira	2011	0	Myotis_izecksohni	Moratelli, R., Peracchi, A. L., Dias, D., & de Oliveira, J. A. (2011). Geographic variation in South American populations of Myotis nigricans (Schinz, 1821)(Chiroptera, Vespertilionidae), with the description of two new species. Mammalian Biology, 76(5), 597.	https://link.springer.com/article/10.1016/j.mambio.2011.01.003	UFRRJ 6675		"Fazenda Maria Brandina (22°36'S, 43°27'W), Tinguá Biological Reserve, Rio de Janeiro State, Brazil, 760 m above sea level."	-22.6	-43.45	izecksohni Moratelli, Peracchi, Dias, & J. A. Oliveira, 2011	recently described	Moratelli, R., Peracchi, A. L., Dias, D., & de Oliveira, J. A. (2011). Geographic variation in South American populations of Myotis nigricans (Schinz, 1821)(Chiroptera, Vespertilionidae), with the description of two new species. Mammalian Biology, 76(5), 592-607.				Brazil|Argentina	South America	Neotropic	DD	0	0	0	Myotis_izecksohni	0	unmatched	NA	1	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	Myotis_izecksohni	1005423	23	Izecksohn's Myotis		Theria	Placentalia	Boreoeutheria	Laurasiatheria	Chiroptera	Yangochiroptera	NA	NA	Vespertilionoidea	Vespertilionidae	Myotinae	NA	Myotis	Pizonyx	izecksohni	Moratelli, A. L. Peracchi, Dias, & J. A. de Oliveira	0	Myotis izecksohni	Moratelli, R., Peracchi, A.L., Dias, D. and Oliveira, J.A. de. 2011-09. Geographic variation in South American populations of _Myotis nigricans_ (Schinz, 1821) (Chiroptera, Vespertilionidae), with the description of two new species. Mammalian Biology 76(5):592-607.	https://doi.org/10.1016/j.mambio.2011.01.003	ALP 6675	holotype		"Fazenda Maria Brandina (22°36'S, 43°27'W), Tinguá Biological Reserve, Rio de Janeiro State, Brazil, 760 m above sea level."	-22.6	-43.45	recently described	Moratelli, R., Peracchi, A. L., Dias, D., & de Oliveira, J. A. (2011). Geographic variation in South American populations of Myotis nigricans (Schinz, 1821)(Chiroptera, Vespertilionidae), with the description of two new species. Mammalian Biology, 76(5), 592-607.				Brazil|Argentina	South America	Neotropic	DD	0	0	0	Myotis_izecksohni	0	unmatched	NA	1	Simmons, N. B., & Cirranello, A. L. (2025). Batnames.org Species List Version 1.7 (1.7). Zenodo. https://doi.org/10.5281/zenodo.14796586	Vespertilionidae	Myotis	Pizonyx	izecksohni	Moratelli, Peracchi, Dias & Oliveira	2011	0	Z. S&auml;ugetierkd.	76(5): 597	Izecksohn&apos;s Myotis	None.	Brazil, Rio de Janiero State, Tingua Biological Reserve, Fazenda Maria Brandina	Brazil, Rio de Janiero and Parana States	<a href='https://cites.org/eng/app/appendices.php' target='_blank'>Not Listed</a>	<a href='https://www.iucnredlist.org/species/88151563/88151572/' target='_blank'>Data Deficient</a>			Mammal Diversity Database. (2025). Mammal Diversity Database (Version 2.2) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.15007505	NA	Myotis izecksohni; Myotis izecksohni; Myotis izecksohni; Myotis izecksohni; Myotis izecksohni; izecksohni; Murin d'lzecksohn; German; zecksohn-Mausohr; Ratonero de; zecksohn; Izecksohn's Myotis; Izecksohn&apos;s Myotis; M. izecksohni