Molossus aztecus Saussure 1860

Molossus aztecus Saussure, 1860 Summary of captures. Three females (CMARF 2147–2149) and two males (CMARF 2150 and 2151). External measurements and weights. Females: TLB: 105.00 (103.00–107.00), TL: 40.66 (38.00–44.00), LHL: 6.33 (6.00–7.00), EL: 11.00 (10.00–12.00), W: 11.33 (10.00–12.00). Males: TLB: 110.00 (110.00–110.00), TL: 40.44 (38.89–42.00), LHL: 6.00 (6.00–6.00), EL: 12.30 (12.00–12.60), W: 12.50 (12.00–13.00). Morphological description. Dorsal pelage with a uniform chocolate brown color and shorter at the shoulders (2–3 mm). Ventral fur is slightly bicolored, with the basal portion of hairs chocolate brown and the tips varying between dark brownish and black shade. Skull with an inflated rostrum and a rounded braincase. Infraorbital foramen opens laterally in frontal view. Upper incisors spatulated. Occipital complex with a rectangular shape (Fig. 10). Canines projected anteriorly. The nasal process in males is well-developed. Basioccipital pits moderately depth. Lambdoidal and sagittal crests well-developed. Mastoid process oriented ventrally in posterior view. The mandible has a developed angular process and a pair of bilobed incisors. Some skull measurements are shown in Table 2. * This variable was incorrectly measured: Loureiro et al. (2018 b) measured from the base of the tympanic bullae and not from the base of the condyle. Identification. The unicolored dorsal pelage, the infraorbital foramen opens laterally in frontal view, the upper incisors spatulated, and the rectangular-shaped occipital complex differentiate the individuals of this species from their morphologically closest related congeners: Molossus coibensis J. A. Allen, 1904, M. currentium O. Thomas, 1901, and M. molossus (Pallas, 1766) (Gregorin et al. 2011; Loureiro et al. 2018 a, 2018 b).