Lasiurus Gray, 1831

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 : 132-133

Genus Lasiurus Gray, 1831

The systematics of Lasiurus has been the focus of numerous studies, and there is persistent controversy as to whether three genera ( Aeorestes , Dasypterus, and Lasiurus ), two genera (Dasypterus and Lasiurus ), or only one genus ( Lasiurus ) should be recognized (Allen, 1894; Miller, 1907; Tate, 1942; Handley, 1960; Hoofer and Van Den Bussche, 2003; Roehrs et al., 2010; Baird et al., 2015, 2017; Ziegler et al., 2016). Recently, Baird et al. (2015, 2017) argued for recognition of three genera based on analyses of genetic data indicating reciprocal monophyly. In contrast, Ziegler et al. (2016) and Novaes et al. (2018) argued that taxonomic stability was better served by treating Aeorestes and Dasypterus as subgenera of Lasiurus . We concur with the latter authors and use Lasiurus as the generic name for all these taxa. Thus defined, Lasiurus includes 19 currently recognized species that can be distinguished from members of other vespertilionid genera by having long, dense fur covering the proximal third or more of the upper surface of the uropatagium; a short, deep rostrum; one pair of upper incisors; and right and left premaxillae separated by a palatal emargination that is approximately onethird the distance across the canines (Gardner and Handley, 2008; López-Baucells et al., 2018; Simmons and Cirranello, 2020).

During the 2012 CEBIO bat course, two acoustic forms of Lasiurus were detected ( Lasiurus sp. and L. blossevillii ). Based on range maps, only L. blossevillii and L. ega are expected to occur in the Yavarí-Ucayali interfluve (Gardner and Handley, 2008). Because we captured L. ega at El Chino Village, the unidentified calls detected at Jenaro Herrera most likely belonged to this species.