New records of Chrotopterus auritus (Peters, 1856)and Noctilio albiventris Desmarest, 1818for the Humid Chaco of Formosa, Argentina

Abstract

The records of the false vampire bat Chrotopterus auritus (Peters, 1856) and lesser bulldog bat Noc-tilio albiventris Desmarest, 1818 in the Humid Chaco of Argentina are scarce, with a few specimens collected in 1938 and 1976, respectively. In 2022, we captured specimens of both species using mist nets at Estancia Guaycolec, Formosa. Furthermore, through camera traps, we documented shelter sharing between C. auritus and Desmodus rotundus (É. Geoffroy Saint-Hilaire, 1810) in an ombu tree (Phytolacca dioica). Our findings increase the known localities for these species in Formosa, expand-ing knowledge about their biology in a sparse studied ecoregion of Argentina.