Ptychadena mapacha Channing, 1993, S. Afr. J. Zool., 28: 142. Holotype: SM, Windhoek, SMW 26145, by original designation. Type locality: "Mapacha (Mpacha), in the eastern Caprivi, Namibia, 17° 38′ S/ 24° 10′ E".
Mapach Ridged Frog (Channing, 2001, Amph. Cent. S. Afr.: 328).
Mapach Grass Frog (Du Preez and Carruthers, 2009, Compl. Guide Frogs S. Afr.: 310).
Known only from the type locality (eastern Caprivi, Namibia), presumably in adjacent Zambia, and Botswana, possibly to western Zimbabwe.
Most similar to Ptychadena schillukorum according to the original publication. See accounts by Channing, 2001, Amph. Cent. S. Afr.: 328, and Du Preez and Carruthers, 2009, Compl. Guide Frogs S. Afr.: 310-311.
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