An illustrated key to the currently recognized genera of the subfamily Eumeninae ( Vespidae ) from China is presented together with a list of 267 species and subspecies, belonging to 51 genera. Nortozumia van der Vecht, 1937 is reported for the first time from China. Two replacement names are proposed for junior primary homonyms: Ancistrocerus rufofrustius Tan & Carpenter, nom. n. replacing Ancistrocerus rufopictus (Kostylev) and Orientalicesa confasciatus Tan & Carpenter, nom. n. replacing Orientalicesa unifasciatus (von Schulthess, 1934).