Many species of pygmy grasshoppers (Tetrigidae) exhibit leaf-like appearance, leaf-mimic pygmy grasshoppers mainly characterized by having high pronotal crest (= elevated median carina). A new genus of leaf-mimic Cladonotinae, Deltonotusoides gen. nov., and a new species, Deltonotusoides strictivertex sp. nov. are described from Motuo, Xizang, China.