First record of the genus Zethus Fabricius, 1804 (Hymenoptera: Vespidae, Eumeninae) from China with description of a new species

The genus Zethus Fabricius, 1804, is newly recorded from China. The male of Zethus malayanus Gusenleitner, 2010 is described and figured for the first time. Zethus nanling ensis Nguyen & Xu, sp. nov. (South China, Guangdong) is described and figured.