Bats (Mammalia, Chiroptera) from a bamboo-dominated forest in the southwestern Brazilian Amazon, with the first records of Glyphonycteris sylvestris Thomas, 1896 and Phylloderma stenops Peters, 1865 from Acre state Verde, Rair Sousa Ferreira Oliveira, Sidney Meneses, Andressa Oliveira Gonçalves, Felipe Alencar, Luana Martins Silva, Thiago Muniz Calouro, Armando Augusto Mews, Henrique Ferreira Morato, Elder Check List 2021 2021-03-01 17 2 311 321 6KLXN Thomas, 1896 Thomas 1896 [168,612,730,755] Mammalia Phyllostomidae Glyphonycteris Animalia Chiroptera 6 317 Chordata species sylvestris   Figure 3T   Materials examined.  BRAZIL• 1 adult ♂; Acre, mu- nicipality of Sena Madureira, Floresta Estadualdo Anti- mary; 09°18′41.19″S, 068°17′34.58″W;  200 ma.s.l.;  Mar. 2017; R. S. Verdeleg.; collected with mist nets; voucher: LEM-1162 ( Fig. 3T).  Identification. Dorsal hair tricolored; greatest length of skull less than 25 mm; two pairs of upper incisors, outer incisor hidden by cingulum of canine; lower incisors nor- mal (not anteriorly-posteriorly long and transversely narrow). Morphological characteristics (external, cranial and dental) observed in the collected specimen allowed the correct identification. Measurements (in mm) obtained from the collected male: forearm length 39.9, third meta- carpal 36.6, fourth metacarpal 35.3, fifth metacarpal 38.2, total skull length 19.8, basal condyle length 18.2, series of upper teeth 8, length of mandible 12.8, series of lower teeth series 8.3, zygomatic width 9.7, cranial cavity width 8.2.    Comments.Our record expands the distribution of  G.sylvestrisby nearly 650 kmnorthwest of the nearest Am- azon record ( Tirira et al. 2016). 2017-03 R S. Verde Brazil 200 -9.311441 Floresta Estadual 1 -68.29294 Sena Madureira 6 317 2 1 1 Acre