Review of the bamboo delphacid genus Malaxa Melichar (Hemiptera: Fulgoroidea: Delphacidae) from China

The genus Malaxa Melichar, 1914 (Hemiptera: Fulgoroidea: Delphacidae: Tropidocephalini) feeding exclusively on bamboo (Bambusoideae), containing 4 species: M. delicata Ding et Yang, 1986 (Guizhou: Guiyang; Yunnan: Mongban; Zhejing: Hangzhou; Fujian: Huangkeng), M. hunanensis Chen sp. nov. (Hunan: Zhangjiajie), M. fusca Yang et Yang, 1986 (Taiwan: Nantou) and M. semifusca Yang et Yang, 1986 (Taiwan: Nantou; Hualian; Guizhou: Daozhen) from China is here reviewed. The male of M. fusca Yang et Yang, collected from Nantou County of Taiwan, is reported and described for the first time. The main morphological characters and male genitalia of 4 species are described and illustrated. A key to species in the genus from China is provided.