Argentinean Myotis (Chiroptera, Vespertilionidae), including the description of a new species from the Yungas Author Novaes, Roberto Leonan M. https://orcid.org/0000-0003-1657-2807 Fundacao Oswaldo Cruz, Fiocruz Mata Atlantica, 22713 - 375, Rio de Janeiro, RJ, Brazil robertoleonan@gmail.com Author Claudio, Vinicius C. https://orcid.org/0000-0002-3438-911X Universidade Federal do Rio de Janeiro, Instituto de Biologia, Programa de Pos-Graduacao em Biodiversidade e Biologia Evolutiva, 21941 - 902, Rio de Janeiro, RJ, Brazil Author Diaz, M. Monica https://orcid.org/0000-0001-9519-6461 Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET); Universidad Nacional de Tucuman, Facultad de Ciencias Naturales, Instituto de Investigaciones de Biodiversidad Argentina; and Fundacion Miguel Lillo 251, 4000, Tucuman, Argentina Author Wilson, Don E. https://orcid.org/0000-0003-4228-5334 Smithsonian Institution, National Museum of Natural History, 20560, Washington, DC, USA Author Weksler, Marcelo Museu Nacional da Universidade Federal do Rio de Janeiro, Departamento de Vertebrados, 20940 - 040, Rio de Janeio, RJ, Brazil Author Moratelli, Ricardo https://orcid.org/0000-0003-0942-6633 Fundacao Oswaldo Cruz, Fiocruz Mata Atlantica, 22713 - 375, Rio de Janeiro, RJ, Brazil text Vertebrate Zoology 2022 2022-12-14 72 1187 1216 http://dx.doi.org/10.3897/vz.72.e90958 journal article http://dx.doi.org/10.3897/vz.72.e90958 2625-8498-72-1187 F856EE991746498CBA152D34A3EEE979 DDDD7D4212E25E21A162EF3D08B19D0D Myotis dinellii Thomas, 1902 Comments. Medium to large-sized species (FA 34.7-39.4 mm, body mass 5-6 g; Table 6 , Fig. 12 ), with silky, long fur (LDF 7-9 mm, LVF 6-8 mm). Ears comparatively long (length 14-17 mm). Dorsal fur strongly bicolored, with blackish bases (1/2 hair length) and tips ranging from Buff Brown to Aniline Yellow, forming two clearly color bands in the dorsal fur. The ventral fur is strongly bicolored, with blackish bases (2/3 hair length) and tips (1/3 hair length) ranging from Ivory Yellow to Pale Olive Buff. Membranes, rostrum, and ears are blackish, contrasting strongly with the body coloration. Legs and dorsal surface of uropatagium naked. A fringe of hairs along the trailing edge of the uropatagium present, but with scattered hairs, less evident than M. albescens and M. levis . The plagiopatagium attached to feet on the level of the base of the toes by a wide band of membrane. Skull medium to large in size (GLS 13.9-15.2 mm, BCB 6.5-7.1 mm), and the rostrum comparatively long and broad. The P3 is smaller than P2 and always aligned in the toothrow and visible in labial view. Sagittal crest absent in most specimens, but when present, is very low; lambdoidal crests usually very low. Parietals decay subtly forward to frontal bone; occipital region rounded and projects beyond the occipital condyle limits; braincase elongated in dorsal view; postorbital and interorbital constrictions comparatively narrow. Table 6. External and craniodental measurements of Argentinean populations of Myotis cf. simus , M. dinellii , and M. keaysi , including morphometric variation and number of samples (N). The measurements are in millimeters. Acronyms and descriptions are available in Table 1 .

Measurements	Myotis cf. simus	Myotis dinellii	Myotis keaysi
	mean (min-max) N	mean (min-max) N	mean (min-max) N
FA	39.1 (38.0-41.3) 4	36.8 (34.7-39.4) 51	39.4 (38.7-40.0) 8
EL	10.5 (10.0-12.0) 4	15.5 (14.0-17.0) 33	13.5 (13.0-14.0) 4
Body mass	9.0 (8.0-9.5) 3	5.0 (5.0-6.0) 33	7.0 (6.0-8.0) 4
LDF	3.1 (2.7-3.4) 4	8.0 (7.0-9.1) 33	7.5 (6.5-8.0) 3
LVF	2.8 (2.5-2.9) 4	6.5 (6.0-8.8) 33	5.5 (5.0-6.0) 3
GLS	14.5 (14.0-15.0) 4	14.5 (13.9-15.3) 51	13.7 (13.5-13.9) 8
CCL	12.6 (11.8-13.0) 4	12.8 (12.3-13.8) 51	12.4 (12.3-12.6) 8
CBL	13.3 (12.9-13.8) 4	13.5 (12.9-14.5) 51	13.0 (12.8-13.1) 8
CIL	13.7 (13.2-14.2) 4	13.7 (13.0-14.7) 51	13.3 (13.1-13.4) 8
BAL	12.3 (11.8-13.0) 4	12.3 (11.7-13.2) 51	11.9 (11.7-12.0) 8
ZYG	9.4 (9.3-9.5) 3	8.7 (8.4-9.4) 39	8.9 (8.8-9.0) 5
MAB	7.7 (7.5-7.9) 4	7.2 (6.8-7.7) 51	7.3 (7.0-7.6) 8
BCB	7.1 (6.8-7.5) 4	6.8 (6.5-7.1) 51	6.8 (6.7-7.0) 8
POB	3.8 (3.6-4.1) 4	3.6 (3.3-3.8) 51	3.7 (3.6-3.8) 8
IOB	4.9 (4.7-5.1) 4	4.6 (4.0-5.0) 51	4.5 (4.5-4.5) 8
BAC	4.0 (3.7-4.1) 3	3.6 (3.1-3.9) 51	3.6 (3.6-3.6) 8
BAM	5.7 (5.2-6.0) 4	5.6 (5.2-6.0) 51	5.5 (5.3-5.7) 8
MTL	5.4 (5.1-5.8) 3	5.5 (5.2-5.8) 51	5.3 (5.1-5.4) 8
M1-3	3.1 (2.8-3.3) 4	3.2 (3.0-3.3) 50	2.9 (2.9-3.1) 8
MAN	5.7 (5.4-6.2) 3	5.9 (5.6-6.2) 51	5.7 (5.6-5.8) 8
MAL	10.8 (10.5-11.3) 4	10.3 (9.8-11.0) 51	9.9 (9.8-10.1) 8

Figure 12. Adult male of Myotis dinellii (MACN 14747) from Cordoba , Argentina. This species occurs from southern Bolivia southward through Argentina, occupying deciduous forests, savannas, and semiarid open environments ( Wilson 2008 ; Sandoval and Barquez 2013 ; Gamboa-Alurralde et al. 2017 ; Moratelli et al. 2019a ). In Argentina it is present from Southern Andean Yungas (Provinces of Tucuman and Salta), southward to High Monte, Southern Andean Steppe, Low Monte, and Patagonian Steppe (Provinces of Catamarca, Chubut, San Juan, and Mendoza), extending eastward to Dry Chaco, Espinal, and Humid Pampas (Provinces of Buenos Aires and Cordoba ), occupying an altitudinal range from 50 to 2,500 m ( Barquez and Diaz 2020 ).