摘要

The Chinese species of the genus Ismarus Haliday, 1835, are revised for the first time. Three new species from the Oriental region of China and belonging to I. halidayi-group are described and illustrated: Ismarus longus sp. n., I. nigritrochanter sp. n. and I. parvicellus sp. n. Two species are newly reported for the Chinese fauna: Ismarus dorsiger (Haliday, 1831) and I. halidayi Foerster, 1850. A key to the Chinese species of the genus is provided. The type specimens are deposited in the Hymenopteran Collection of South China Agricultural University, Guangzhou (SCAU).