FIGURE 2. Advertisement calls (spectrograms and oscillograms) of the three species of Allophryne: A. resplendens from the lower Moa River, western Acre; A. ruthveni from Serra do Navio, Eastern Guiana Shield of Amapá, and A. relicta from Uruçuca (type locality), lowland Atlantic rainforest of southern Bahia. Calls are equally scaled (0.55 s) along the x-axis.