Micronycteris Gray, 1866

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 : 56

Genus Micronycteris Gray, 1866

The genus Micronycteris (sensu stricto; Simmons and Voss, 1998) includes 13 species distinguished from members of other phyllostomid genera by having large, rounded ears connected by a transverse band of skin across the crown of the head, bicolored dorsal fur, unicolored ventral fur, two dermal pads with smoothly rounded lateral margins on the chin, and outer upper incisor and canine always in contact (Simmons, 1996; Williams and Genoways, 2008; Siles et al., 2013; López-Baucells et al., 2018; Siles and Baker, 2020). The taxonomy and systematics of Micronycteris has been reviewed by Andersen (1906a), Sanborn (1949a), Simmons (1996), Simmons and Voss (1998), Fonseca et al. (2007), Porter et al. (2007), Larsen et al. (2011), Siles et al. (2013), and Siles and Baker (2020). In their recent revision, Siles and Baker (2020) recognized two dark-bellied subgenera ( Micronycteris and Xenoctenes) and two pale-bellied subgenera ( Leuconycteris and Schizonycteris). We recorded all six species of the genus Micronycteris that are expected to occur in the Yavarí- Ucayali interfluve, including members of all four subgenera. Five species occur sympatrically at Nuevo San Juan ( M. hirsuta , M. matses , M. megalotis , M. microtis , and M. minuta ).