Micronycteris (Leuconycteris) brosseti Simmons and Voss, 1998

Velazco, Paúl M., Voss, Robert S., Fleck, David W. & Simmons, Nancy B., 2021, Mammalian Diversity And Matses Ethnomammalogy In Amazonian Peru Part 4: Bats, Bulletin of the American Museum of Natural History 2021 (451), pp. 1-201 : 56-57

Micronycteris (Leuconycteris) brosseti Simmons and Voss, 1998

VOUCHER MATERIAL (TOTAL = 4): Jenaro Herrera (MUSM 5528), Quebrada Esperanza (FMNH 89100–89102); see table 27 for measurements.

UNVOUCHERED OBSERVATIONS: None.

IDENTIFICATION: Siles and Baker (2020) provided a revised diagnosis for the subgenus Leuconycteris , which contains only two species, Micronycteris brosseti and M. schmidtorum . Micronycteris brosseti is an Amazonian species that is definitely known from just five localities, two of which are in the Yavarí-Ucayali inter-

TABLE 27

External and Craniodental Measurements (mm) and Weights (g) of Micronycteris brosseti

and M. matses from the Yavarí-Ucayali Interfluve

fluve. 8 Descriptions and measurements of M. brosseti were provided by Simmons and Voss (1998) and Lim et al. (1999). This species is distinguished from other congeners by its small size (e.g., forearm 31–34 mm) and by having pale-gray or buff ventral fur, short (≤ 4 mm) fur on the leading edge of the pinna, wing digit IV with a second phalange that is shorter than the first phalange, a short tibia (<14.5 mm), and a calcar that is longer than the foot (Simmons and Voss, 1998; López-Baucells et al., 2018). No subspecies are currently recognized (Simmons and Voss, 1998; Williams and Genoways, 2008).

8 The identification of an Atlantic Forest specimen (from São Paulo; FMNH 92997) previously referred to Micronycteris brosseti by Simmons and Voss (1998) is thought to be questionable (Garbino, 2016).

The specimen of Micronycteris brosseti from Jenaro Herrera was identified as M. schmidtorum by Ascorra et al. (1991a) and Ascorra et al. (1993). This specimen, along with the specimens from Quebrada Esperanza, were subsequently included as “referred material” in the original description of M. brosseti by Simmons and Voss (1998: 64–65).

REMARKS: According to Ascorra et al. (1991a), the specimen from Jenaro Herrera was mistnetted in secondary vegetation, but whether it was taken in a ground-level or elevated net is unknown. No capture information accompanies the series from Quebrada Esperanza, which was collected in 1957 by C. Kalinowski, probably from a roost.