T. Nečas, F. M. Masudi, G. Badjedjea, and V. Gvoždík, “Low genetic variation and morphological uniformity throughout the Congolian forest zone do not support the validity of Cryptothylax minutus Laurent, 1976 (Anura: Hyperoliidae), rendering the genus Cryptothylax monotypic”, Zootaxa, vol. 5821, no. 3, pp. 387–411, Jun. 2026.