Vampyriscus bidens (Dobson, 1878)

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 : 120

Vampyriscus bidens (Dobson, 1878)

Figure 28B

VOUCHER MATERIAL (TOTAL = 3): Quebrada Blanco (MUSM 21320), Santa Cecilia (FMNH 87075, 87076); see table 52 for measurements.

UNVOUCHERED OBSERVATIONS: An unspecified number of individuals of Vampyriscus bidens were captured at Wiswincho during the Tapiche- Blanco Rapid Biological Inventory (Escobedo- Torres, 2015). Additionally, we captured three individuals at El Chino Village, two on 16 February and another on 18 February 2019.

IDENTIFICATION: Vampyriscus bidens can be easily distinguished from other congeneric species by the presence of a well-defined pale middorsal stripe, presence of only one pair of lower incisors, and a minute m3 (Arroyo-Cabrales, 2008c; López- Baucells et al., 2018). Descriptions and measurements of Vampyriscus bidens were provided by Davis (1975), Genoways and Williams (1979), Swanepoel and Genoways (1979), Brosset and Charles-Dominique (1990), Lee et al. (2001), and Shapley et al. (2005). No subspecies are currently recognized (Arroyo-Cabrales, 2008c).

The voucher material we examined from the Yavarí-Ucayali interfluve conforms to previous descriptions of Vampyriscus bidens , with measurements that fall within the range of size variation previously documented for the species.

REMARKS: The only specimens of Vampyriscus bidens accompanied by capture data from our region were taken in clearings and gardens at El Chino; of these, two were taken in a harp trap and one was taken in a ground-level mistnet.

Figures

FIG. 28. Photographs of A, an adult Vampyressa thyone captured at Jenaro Herrera; B, an adult Vampyriscus bidens captured at El Chino Village; and C, an adult Vampyriscus brocki captured at Jenaro Herrera. Photographs by Marco Tschapka (A, C) and Brock Fenton (B).