Two newly recorded genera Malayepipona Giordani Soika and Megaodynerus Gusenleitner, with eight new species from China (Hymenoptera, Vespidae, Eumeninae).

In this paper, the genera Malayepipona Giordani Soika and Megaodynerus Gusenleitner are newly recorded from China. Seven new species of Malayepipona and one new species of Megaodynerus are described and illustrated: namely Malayepipona brunnea Bai, Chen Li, sp. nov., M. flaviclypeata Bai, Chen Li, sp. nov., M. lamellata Bai, Chen Li, sp. nov., M. maculosa Bai, Chen Li, sp. nov., M. nigricans Bai, Chen Li, sp. nov., M. sparsipuncta Bai, Chen Li, sp. nov., M. triangula Bai, Chen Li, sp. nov. and Megaodynerus bimaculus Bai, Chen Li, sp. nov.. The species Malayepipona clypeata Nguyen Carpenter, 2013 is also newly recorded from China. A key to known species of Malayepipona is updated.