Oscillograms (top) and sonograms (bottom) of male advertisement calls of A Ophryophryne elfina sp. n. (Lam Dong Prov., Bidoup-Nui Ba N.P., 1935 m a.s.l., 17°C) B O. gerti (Dak Lak Prov., Chu Yang Sin N.P., 1020 m a.s.l., 22°C) C O. synoria (Dak Lak Prov., Chu Yang Sin N.P., 750 m a.s.l., 21°C). The sampling rate lowered to 22.05 kHz.

  Part of: Poyarkov Jr NA, Duong TV, Orlov NL, Gogoleva SS, Vassilieva AB, Nguyen LT, Nguyen VDH, Nguyen SN, Che J, Mahony S (2017) Molecular, morphological and acoustic assessment of the genus Ophryophryne (Anura, Megophryidae) from Langbian Plateau, southern Vietnam, with description of a new species. ZooKeys 672: 49-120. https://doi.org/10.3897/zookeys.672.10624