Vampyriscus bidens (Dobson, 1878)

Ruelas, Dennisse & Pacheco, Victor, 2021, Small mammals from the Seasonally Dry Tropical Forests of the Huallaga river basin and new records for San Martín department, Peru, Check List 17 (3), pp. 877-894 : 884

Vampyriscus bidens (Dobson, 1878)

Figure 4Q

Material examined. PERU • El Incaico private conservation area, Bellavista Province; 07°20′15″S, 076°25′14″W; 493 m elevation; 28.VIII.2015; D. Ruelas; mist nets; 1 ♀, MUSM 43882 , adult .

Identification. We identified this species by the marked white supraorbital stripes; broad lateral lancet of the nose leaf; high and broad tip of the nose leaf; conspicuous dorsal line; wide uropatagium with a fringe of hairs; elongated skull; short rostrum; rectangular nasal opening; medium posteropalatal process; asymmetric and bilobed inner upper incisors; non-caniniform first lower premolar; a pair of lower incisors; high coronoid process; dental formula: 2/1 1/1 2/2 2/3 = 28. External and craniodental measurements are shown in Table 2. These characters and measurements are within the variation range for the species following Ruelas and Pacheco (2015) and Díaz et al. (2016).

Remarks. Vampyriscus bidens occurs from Colombia, Venezuela, Guyana, Suriname, French Guiana, Ecuador, Peru, Brazil, and Bolivia ( Arroyo-Cabrales 2008). In Peru, V. bidens occurs in the Selva Baja ecoregion ( Pacheco et al. 2009). The new record extends the geo- graphic range of this species by 310 km south from the nearest previous record at Huampami, Amazonas Department ( Patton et al. 1982; Arroyo-Cabrales 2008).