Abstract
The taxonomic study of the genus Thisizima Walker, 1864 is carried out in China. Thisizima subceratellasp. n. and Thisizima fasciariasp. n. are described as new based on the specimens collected in Fujian, Hainan and Hong Kong. Detailed male and female genitalia are described for the first time for the genus. Photographs of adults and genital structures are provided. A checklist of all the described species is included.