Spectrograms and oscillograms of calls of the neumanni species group A P. neumanni call type A, B P. neumanni call type B, C P. beka sp. nov. D P. delphina sp. nov. E P. doro sp. nov. F P. goweri.

  Part of: Goutte S, Reyes-Velasco J, Freilich X, Kassie A, Boissinot S (2021) Taxonomic revision of grass frogs (Ptychadenidae, Ptychadena) endemic to the Ethiopian highlands. ZooKeys 1016: 77-141. https://doi.org/10.3897/zookeys.1016.59699