Vocalizations of Crossodactylus schmidti Gallardo, 1961 (Anura, Hylodidae): advertisement call and aggressive call

We describe the advertisement and aggressive calls of Crossodactylus schmidti based on recordings made in the Parque Estadual do Turvo, located in northwest Rio Grande do Sul, Brazil. Compared to the advertisement calls described for other species of the genus, the advertisement call of C. schmidti differs in the temporal structure by having fewer notes per call and longer intervals between notes, and in the spectral structure by having lower values of dominant frequency. The aggressive call of C. schmidti is a variation of the advertisement call, which is similar to this in the note duration and dominant frequency values, but is a longer call, having fewer notes with longer intervals between them. The advertisement and aggressive calls of C. schmidti may be emitted separately, or the aggressive call may be followed by the advertisement call.