Vocalization of Scinax haddadorum (Anura: Hylidae), with further notes on the vocalization of the morphologically similar Scinax rupestris

Abstract

We describe for the first time the vocalization of Scinax haddadorum from its type locality. We also aim to establish an acoustic diagnosis for this species in comparison with the morphologically similar Scinax rupestris, for which we also describe additional note types of its vocalization that were not previously reported. The advertisement call of S. haddadorum consists of a single type of relatively short (<200 ms on average), multipulsed note and the call dominant frequency is restricted mostly to low frequency values (ca. 1.5 kHz), whereas the advertisement call of S. rupestris consists of a single type of relatively long (>450 ms on average), multipulsed note, and the call dominant frequency may be contained within two distinct frequency bands. Advertisement calls across Scinax species exhibit distinctive patterns both in time and frequency structures that should be described in more detail in future studies, since we believe that they might be of help in the recognition and delimitation of species in this group of Neotropical treefrogs.