Cryptothylax Laurent and Combaz, 1950

Class: Amphibia > Order: Anura > Family: Hyperoliidae > Subfamily: Hyperoliinae > Genus: Cryptothylax
2 species

Cryptothylax Laurent and Combaz, 1950, Rev. Zool. Bot. Afr., 43: 276. Type species: Hylambates greshoffii Schilthuis, 1889, by original designation.

English Names

Wax Frogs (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 66).

Green-eyed Frogs (Channing and Rödel, 2019, Field Guide Frogs & Other Amph. Afr.: 148).


Forest swamps and waterways of the Congo Basin, north to Uele Province (Dem. Rep. Congo) and west to Cameroon.


 Pyron and Wiens, 2011, Mol. Phylogenet. Evol., 61: 543–583, suggested this taxon to be the sister of their remaining hyperoliid exemplars. Channing, Rödel, and Channing, 2012, Tadpoles of Africa: 200–201, reported on comparative tadpole morphology. Channing and Rödel, 2019, Field Guide Frogs & Other Amph. Afr.: 148–149, provided brief accounts, photographs, and range maps for the species.

Contained taxa (2 sp.):

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