Advertisement calls of the holotype of Allobates albiventris sp. nov. (INPAH45035, FNJV 53687). A Oscillogram showing the continuous emission of calls with variable arrangements. Spectrograms and oscillograms of the four most common call arrangements: single call (B) and series of two (C), three (D) and four calls (D). Note that each call is composed of two notes. Air temperature: 22°C. Abbreviations: dB, decibels; kHz, kilohertz; s, seconds.

  Part of: Souza JRD, Ferrão M, Kaefer IL, Cunha-Machado AS, Melo-Sampaio PR, Hanken J, Lima AP (2023) A new pale-ventered nurse frog (Aromobatidae: Allobates) from southwestern Brazilian Amazonia. Vertebrate Zoology 73: 647-675.