The Oriental bamboo leafhopper genus Mohunia Distant, 1908 (Hemiptera: Cicadellidae: Mukariinae) is revised to include one known species, Mohunia bifasciana Li & Chen (Guizhou), and two new species, Mohunia ventrospina Chen & Li, sp. nov. (Guizhou), Mohunia introspina Chen & Yang, sp. nov. (Guizhou, Yunnan) from China. Two new genera, Neomohunia Chen & Li, gen. nov. and Paramohunia Chen & Li, gen. nov., closely related to Mohunia, are described and illustrated. Two new combinations, Neomohunia pyramida (Li & Chen), com. nov. and Paramohunia notata (Li & Chen), com. nov., both transferred from Mohunia, are proposed. The species Mohunia biguttata Wang & Li was transferred to the subfamily Typhlocybinae. Keys to genera and species of the Mohunia groups are provided. The importance of these groups as a pest on bamboo (Bambusoideae Ascherson & Graebner) is discussed briefly. Biological notes and a discussion of those groups’ pest states are given.