Body slender, length 2.0–2.9 mm (Figs 15, 16). Head in frontal view, 1.3× as wide as high; antennal scrobe extending to anterior ocellus; antennal insertion slightly above lower ocular line; lower face at least slightly convex; clypeus with longitudinal striation, lower margin of clypeus not protruding (Figs 17, 18), without tooth. Antennal scape slightly shorter than eye height, length of pedicel and flagellum shorter than head width (0.8×); Fu₁ to Fu₃ slightly longer than broad, Fu₄ to Fu₆ quadrate. Head in dorsal view, 1.9× as wide as long; eye length 2× temple length; POL 1.44× OOL. Mesosoma 1.37× as long as broad. Propodeum with complete median carina and plicae. Fore wing 2.33× as long as broad; submarginal vein 2.24× as long as marginal vein; marginal vein 1.9× as long as postmarginal vein; stigmal vein as long as postmarginal vein. Gaster 1.37× as long as broad, 1.27× as broad as thorax width.

China: 30♂, 29♀, Sichuan: Xichang, V.1992, ex. Neodiprion xiangyunicus Xiao et Zhou, leg. Zhen Zhang; 1♀, Yunnan: Nanjian, 2.VI.1980; Yunnan: Kunming, 13.VII.1977, ex. pupae of Diprioninae, leg. Jing-liang Qi; 2♀, Yunnan: Kunming, XII.1988, leg. Hong-ming Yang; 1♀, Tibet: Chamdo, 3400m, 15.VIII.2001, leg. Chao-dong Zhu.

The species mainly parasitizes Luffia ferchaultella, and Luffia lapidella (Lepidoptera: Psychidae) and Apanteles glomeratus (L.) (Hymenoptera: Braconidae) (Graham, 1969). Here we newly report Neodiprion xianyunicus Xiao et Zhou and Diprionidae sp. (Hymenoptera: Symphyta).

China (Sichuan, Yunnan, Tibet); Palearctic and Nearctic regions. This is the first record from the Oriental region.