Two new species of Fissocantharis Pic are described, F. bifoveatus sp. n. (CHINA: Yunnan) and F. acuticollis sp. n. (CHINA: Zhejiang, Fujian, Guangdong, Hunan). F. pieli (Pic, 1937) is redescribed and F. kontumensis Wittmer, 1989 is provided with a supplementary description. F. shanensis (Wittmer, 1997) is synonymized with F. kontumensis. For the above four species, illustrations of male genitalia are provided, for the latter three also photos of female genitalia and abdominal sternites VIII, and for the new species photos of male habitus and antennae are presented. Additionally, the specific name of F. wittmeri (Y. Yang et X. Yang, 2009), preoccupied by F. wittmeri (Kazantsev, 2007), is replaced by F. walteri Y. Yang et X. Yang, nom. n. And F. wittmeri (Kazantsev, 2007) is found to be a junior objective synonym of F. denominata (Wittmer, 1997).