Peropteryx pallidoptera Lim et al., 2010

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 : 19

Peropteryx pallidoptera Lim et al., 2010

Figure 5B

VOUCHER MATERIAL (TOTAL = 22): Nuevo San Juan (AMNH 272671, 272726, 272827, 272854, 272855, 273042, 273116, 273185; MUSM 13226– 13230, 15246, 15249–15252), Orosa (AMNH 74107), Quebrada Esperanza (FMNH 89103, 89104), Quebrada Lobo (MUSA 15134); see table 5 for measurements.

UNVOUCHERED OBSERVATIONS: Two individuals were captured at Frog Valley on 20 February 2019.

IDENTIFICATION: Peropteryx pallidoptera was recently described based on specimens from three localities, two of which occur in the Yavarí- Ucayali interfluve. This species can be distinguished from other congeners by having transparent but brown-tinged wing membranes; pale-brown arms and manual digits; ears that are

not connected by a transverse band of skin; a skull with a narrow rostrum that is not dorsally inflated; and small, shallow pterygoid pits separated by the presphenoid and the basisphenoid pit (fig. 5B; Lim et al. 2010: figs. 1, 2). Descriptions and measurements of P. pallidoptera were provided by Lim et al. (2010), McDonough et al. (2010), Castro et al. (2012), and Suárez-Castro et al. (2012). No subspecies are currently recognized in P. pallidoptera (Lim et al., 2010) .

Specimens of Peropteryx pallidoptera from Nuevo San Juan were identified as P. cf. macrotis by Fleck et al (2002). This material was subsequently included as part of the type series of P. pallidoptera by Lim et al. (2010). Medina et al. (2015) correctly identified their specimen from Quebrada Lobo as P. pallidoptera .

REMARKS: The two individuals captured at Frog Valley, both females, were taken from the same hollow-log roost described in the account for P. macrotis (above). All the specimens of Peropteryx pallidoptera from Nuevo San Juan were taken from roosts (table 6). Half these roosts were encountered inside or under fallen trees, but undercut earth banks and holes (probably excavated by armadillos) in the sides

Figures

FIG. 5. Basicranial views of Peropteryx leucoptera (A, AMNH 273182), P. pallidoptera (B, MUSM 13228), and P. macrotis (C, AMNH 266005) illustrating taxonomic differences in the size and separation of the pterygoid pits. In P. leucoptera, large pterygoid pits (ptp) are separated by the presphenoid (pre) and the basisphenoid pit (bsp). In P. pallidoptera, small pterygoid pits are separated by the presphenoid and the basisphenoid pit. In P. macrotis, small pterygoid pits are separated only by the basisphenoid pit. Other abbreviations: coc, cochlea; ect, ectotympanic; gf, glenoid fossa.