Release call of Corythomantis greeningi Boulenger, 1896 (Anura: Hylidae)

The release calls carry species-specifics characteristics that can be used for the diagnosis of closely related species. Despite its importance, for the Lophyohylini tribe, this type of call is known only for two species. Corythomantis greeningi is a species widely distributed in xeric and sub-humid regions of northeastern Brazil. Herein, we describe for the first time the release call of C. greeningi recorded in the Pedro II municipality, state of Piaui, northeastern Brazil. The release call, emitted during handling in its the axillary region, was structurally and quantitatively different from the advertisement call, presenting a lower number of pulses per note and a lower dominant frequency. This work represents an important contribution to the intra and interspecific communication mechanisms of the species.