A new species of the rare chrysidid subfamily Loboscelidiinae from China: the third species of Rhadinoscelidia Kimsey, 1988 (Hymenoptera, Chrysididae)

Rhadinoscelidia delta Liu, Yao & Xu, sp. n. (Chrysididae, Loboscelidiinae) is described and illustrated based on two female specimens from Hainan province. It represents the first record of the genus Rhadinoscelidia Kimsey, 1988 for China. A key to the world species of this genus is given. All specimens are preserved in the Hymenopteran Collection, South China Agricultural University (SCAU).