Type of shelter and first description of the echolocation call of disk-winged bat (Thyroptera devivoi)

Abstract

Thyropteridae is a family of bats endemic to the Neotropical region, and Thyroptera devivoi is the only species in the family that occurs exclusively in forest patches within savannas of northern South America and north of the Brazilian Cerrado. Primary data on the species are still scarce. Therefore, in this study our objective was to fill knowledge gaps on geographical distribution, roost-use, and echolocation for the species. We observed a T. devivoi colony of 15 individuals living under a dead palm leaf. The bats used the leaf as a roost for at least four days. After capturing one individual, we confirmed the species identification via skull size and the oblong shape of the adhesive disk. The new record reinforces the association of this species with non-forested formations, and its occurrence mainly in savannas. Echolocation calls of T. devivoi are consistent with those known for the genus, with multiharmonic, low intensity and high frequency pulses. Despite these new data, more studies are certainly needed to enhance distribution data for the species, as well as to clarify the biological and ecological requirements of the species.

First confirmed record of the LaVal’s Disk-winged Bat, Thyroptera lavali Pine, 1993 (Chiroptera, Thyropteridae), from Colombia

“…Thus, within Colombia, T. lavali is known to occur only in the Amazon region. Recently, Rosa et al (2020) described the echolocation calls and shelters of T. devivoi. However, we think that the bat showed by Rosa et al (2020: fig.…”

New records of disk-winged bats Thyroptera tricolor Spix, 1823 and T. devivoi Gregorin, Gonçalves, Lim & Engstrom, 2006 (Chiroptera: Thyropteridae) for the Brazilian Amazonia and Cerrado

“…Thyroptera devivoi is known from six localities: one in the Colombian llanos, one in the Guyanan Rupununi savanna, and four in the Brazilian Cerrado (Maranhão, Tocantins, and Piauí states) (Gregorin et al, 2006;Santos, C. et al, 2013;Rodríguez-Posada et al, 2017;Rosa et al, 2020). There is scarce information on the ecology of this recently-described species: one individual from Guyana was captured 'under and eaté palm leaf' (Gregorin et al, 2006); in Colombia, a specimen was caught in a Mauritia flexuosa L. f. grove (Rodríguez-Posada et al, 2017); and in Maranhão state, Brazil, a roosting group was found in a dead palm leaf sheath (Rosa et al, 2020).…”