Nuevos hallazgos sobre la ecología y las llamadas de ecolocalización de Chrotopterus auritus (Chiroptera: Phyllostomidae)

We report new data about the big-eared woolly bat (Chrotopterus auritus) from an individual recorded in an artificial roost in Tucumán province, Argentina. This record represents a new locality, the fourth record in Tucuman and an update of the presence of the species after an interval of 25 years. Skull frag-ments found inside the roost were collected, and echolocation calls were recorded using an Echo Meter Touch 2. The echolocation calls of Chrotopterus auritus are multiharmonic, with pulses of modulated downward frequency. The remains of prey fragments were identified as Thylamys sponsorius, corresponding to a new food item reported for Chrotopterus auritus.