Vampyriscus brocki (Peterson, 1968)

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 : 120-121

Vampyriscus brocki (Peterson, 1968)

Figure 28C

VOUCHER MATERIAL (TOTAL = 17): Jenaro Herrera (MUSM 5942, 6979), Quebrada Betilia (MUSA 15168), Quebrada Esperanza (FMNH 89142), Quebrada Lobo (MUSA 15130), Quebrada Vainilla (LSUMZ 28438), Santa Cecilia (FMNH 87097–87102, 87104–87107, 89137); see table 52 for measurements.

UNVOUCHERED OBSERVATIONS: One individual of Vampyriscus brocki was captured at Quebrada Limera during the Yavarí Rapid Biological Inventory (Escobedo, 2003). Additionally, we captured one individual at El Chino Village on 18 February 2019. Vampyriscus brocki was also identified using acoustic methods during the CEBIO bat course at Jenaro Herrera.

IDENTIFICATION: Vampyriscus brocki can be distinguished from other congeneric species by its relatively small size (forearm <35 mm), middorsal stripe faint or absent, presence of two pairs of lower incisors, and absence of m3 (Simmons and Voss, 1998; Arroyo-Cabrales, 2008c; López-Baucells et al., 2018). Descriptions and measurements of Vampyriscus brocki have been provided by Swanepoel and Genoways (1979), Simmons and Voss (1998), Lim et al. (2005), and Ruelas and Pacheco (2015). No subspecies are currently recognized (Arroyo- Cabrales, 2008c).

TABLE 52

External and Craniodental Measurements (mm) and Weights (g) of Vampyriscus bidens

and V. brocki from the Yavarí-Ucayali Interfluve

Ascorra et al. (1993) and Medina et al. (2015) correctly identified their material from Jenaro Herrera, Quebrada Betilia, and Quebrada Lobo as Vampyriscus (or Vampyressa ) brocki .

REMARKS: Of eight recorded captures of Vampyriscus brocki accompanied by ecological data from our region, four were taken in groundlevel mistnets and four in elevated nets; four of these mistnet captures were in primary forest and four were in clearings. Additionally, Escobedo (2003) reported capturing this species in seasonally flooded forest.

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).