Rödel, M.-O., Schmitz, A., Penner, J., Griesbaum, F., Leaché, A.D., Ofori-Boateng, C., Portik, D., Doumbia, J., Kouamé, N.G., Kpan, T.F., Gonwouo, N.L., Nopper, J., Hillers, A., Nago, S.G.A., Ernst, R., Glos, J., Petzold, A. & Barej, M.F. (2026) Four new cryptic Ptychadena species from the Upper Guinean rainforests of West Africa (Amphibia, Anura, Ptychadenidae). Zootaxa, 5779 (1), 1–66.
https://doi.org/10.11646/zootaxa.5779.1.1