Four new species of Closterocerus Westwood, C. rectisulcus sp. nov. , C. shaanxiensis sp. nov. , C. separatus sp. nov. and C. unifasciatus sp. nov. are described from China, each with a distinct pattern on the fore wings, and belonging to subgenus Closterocerus . A key to all species of the genus Closterocerus in China is provided.