Callulina Nieden, 1911
Callulina Nieden, 1911 "1910", Sitzungsber. Ges. Naturforsch. Freunde Berlin, 1910: 449. Type species: Callulina kreffti Nieden, 1911 "1910", by monotypy.
Secret Frogs (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 88).
Warty Frogs (Channing and Howell, 2006, Amph. E. Afr.: 221).
Eastern Arc Mountains of Tanzania as well as adjacent Kenya.
Menegon, Gower, and Loader, 2011, Zootaxa, 3095: 15-26, provided a molecular tree for the species in the genus.
Contained taxa (9 sp.):
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