Furipterus horrens (Cuvier, 1828)

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 : 123-124

Furipterus horrens (Cuvier, 1828)

Figure 30

VOUCHER MATERIAL (TOTAL = 17): Nuevo San Juan (AMNH 272837, 272864, 273068, 273071, 273099, 273107, 273181; MUSM 13202, 13203, 15190–15194), Orosa (AMNH 74108), Quebrada Vainilla (LSUMZ 28445, 28446); see table 53 for measurements.

UNVOUCHERED OBSERVATIONS: One individual of Furipterus horrens was captured but escaped at Jenaro Herrera (Ascorra et al., 1993). During the CEBIO bat course in Jenaro Herrera, one individual was observed roosting in a cavity beneath a fallen tree on 17 January 2012 (fig. 30).

IDENTIFICATION: Furipterus horrens is a widespread species that occurs from Nicaragua southward throughout most of humid-tropical South America (Gardner, 2008k; Reid, 2009; Medina- Fitoria et al., 2015). It is easily distinguished from Amorphochilus schnablii , the only other species of furipterid, by its rounded, funnelshaped ears; well-furred muzzle; lack of fleshy

structures under the chin; a short palate that does not extend much beyond the last molar; and a mesopterygoid fossa that is longer than wide (Gardner, 2008k). Descriptions and measurements of Furipterus have been provided by Husson (1962, 1978), Uieda et al. (1980), Willig (1983), Brosset and Charles-Dominique (1990), Simmons and Voss (1998), Gardner (2008k), Reid (2009), Duda et al. (2012), Novaes et al. (2012), and Leal et al. (2014). No subspecies are currently recognized (Gardner, 2008k).

Fleck et al. (2002) correctly identified their specimens from Nuevo San Juan. Voucher material from the Yavarí-Ucayali interfluve conforms to previous descriptions of Furipterus horrens , with measurements that fall within the range of size variation previously docu- mented for the species. In life the Nuevo San Juan specimens had reddish muzzles and chins, but this coloration has faded in preservative. Furipterus horrens is reported to show sexual dimorphism in some populations, with females having larger body size than males (e.g., Uieda et al., 1980; Simmons and Voss, 1998), but no size dimorphism was observed in our voucher specimens.

REMARKS: All the specimens of Furipterus horrens from our region were taken from roosts, of which we found 10 near Nuevo San Juan (table 54). Most roosting groups of this species were encountered at ground level, but one individual was said (by the Matses hunter who collected it) to have been found roosting high up inside a large hollow tree; possibly it had been

Figures

FIG. 30. Photograph of an adult Furipterus horrens roosting in a cavity formed by a fallen tree at Jenaro Herrera. Photograph by Alexander Pari.