AnimaliaHymenopteraPteromalidaeJiaoTian-yangYaoQin-yingXiaoHuiReview of Dibrachys Förster from China (Hymenoptera, Chalcidoidea, Pteromalidae)Zookeys1422017201765612314910.3897/zookeys.656.11373 Dibrachys koraiensis Yang, 1996 Dibrachys koraiensisYang, 1996: 197–199, 323.Diagnosis.

Body length 2.5–2.7 mm; gaster long ovate. Head in frontal view 1.25× as wide as high; antennal scrobe extending upwards and reaching anterior ocellus; lower face slightly convex; antennal insertion placed on lower ocular line; clypeus with longitudinal striation and lower margin slightly protruded, emarginate, and with two blunt teeth; lower angle of gena not exceeding clypeal margin. Antennal scape slightly shorter than eye height (0.87×); length of pedicel and flagellum shorter than head width (0.8×); anelli transverse; Fu1 and Fu2 slightly longer than broad, Fu3 and Fu4 quadrate, Fu4 and Fu6 slightly transverse. Head in dorsal view 1.88× as wide as long; eye length 2× temple length; POL 1.5× OOL. Mesosoma 1.7× as long as broad, mid lobe of mesoscutum with relatively coarse sculpture. Propodeum with complete plica and indistinct median carina. Fore wing length 2.2× width; submarginal vein 2× as long as marginal vein; marginal vein 2.53× as long as postmarginal vein, 2.13× as long as stigma vein; stigmal vein slightly longer than postmarginal vein (1.15×). Gaster 1.5× as long as broad, distinctly broader than thorax width (1.21×).

Material examined.

China: 1♀, Heilongjiang: Yichun, 3.VII.1972, leg. Ding-xi Liao; 1♀, Heilongjiang: Hailin, VI.1975, leg. Gui-you Zhang.

Hosts.

Yang (1996) reported this species as reared from the pupae of some chalcid collected from tunnels in Picea koraiensis Nakai (Pinales: Pinaceae) built by the wood pest Orthotomicus golovjankoi Pjatnitzky (Coleoptera: Curculionidae), the possible host.

Distribution.

China (Heilongjiang).

YangZQ (1996) Parasitic Wasps on Bark Beetles in China. Science Press, Beijing, 363 pp.