FIGURE 22 in A review of Northern Peruvian glassfrogs (Centrolenidae), with the description of four new remarkable species

FIGURE 22. Spectrograms of advertisement calls of Cochranella guayasamini. a) Single male, recorded at 24°C from km. 26 on Tarapoto-Yurimaguas road, San Martín, 6°24'44.79"S, 76°19'2.09" W, 686 m. b) Two males calling in sequence, recorded at 20°C from type locality (recording by J. L. Brown). c) Chorus of roughly 4–5 males calling in sequence, recorded at 22°C from type locality (recording by J. L. Brown). Note that in the chorus recording, calls from different males are given in rapid succession and partially overlap with calls of other males in the chorus. These bouts of multiple males calling in sequence are separated by several seconds of silence.