Dibrachys hians Boucek , 1965, new record to China

Jiao, Tian-yang, Yao, Qin-ying & Xiao, Hui, 2017, Review of Dibrachys Foerster from China (Hymenoptera, Chalcidoidea, Pteromalidae), ZooKeys 656, pp. 123-149 : 127

Dibrachys hians Boucek, 1965, new record to China Figs 1-4

Dibrachys (Allodibrachys) hians Bouček, 1965: 28.

Diagnosis.

Body length 1.6-2.0 mm (Figs 1, 2). Head in frontal view (Fig. 3) 1.32 × as wide as high; antennal scrobe shallow, extending upwards and not reaching anterior ocellus; antennal insertion placed on lower ocular line; clypeus with longitudinal striation; lower margin of clypeus not protruded, emarginate in middle, and without tooth; gena almost straight, lower angle of gena protruding beyond clypeal margin. Antenna (Fig. 4) with scape shorter than eye height (0.79 ×), not reaching anterior ocellus; length of pedicel and flagellum combined less than head width (0.67 ×); anelli transverse; each funicular segment subquarate; clava slightly clavate. Head in dorsal view with width 2 × length; eye length 2 × temple length; POL 2 × OOL. Mesosoma 1.37 × as long as broad, mid lobe of mesoscutum with regular sculpture. Propodeum with complete median carina and incomplete plica. Fore wing with marginal vein 1.8 × as long as postmarginal vein; postmarginal vein as long as stigmal vein. Gaster 1.25 × as long as broad, slightly broader than thorax width.

Material examined.

China: 3♀, Heilongjiang: Yichun, 13.VII.1962, ex. Tachinidae sp. on Ptycholomoides aeriferanus Herrich-Schaffer, leg. Ding-Xi Liao; 1♂, 1♀, Heilongjiang: Dailing, 29.VI.1962, ex. Tachinidae sp. on Ptycholomoides aeriferanus Herrich-Schaffer; 1♀, Jilin: Dunhua, 25.VI.1990; 1♂, 2♀, Beijing: Yanqing, 19.VII.1982, ex. Curculionidae sp. on elm, leg. Ding-Xi Liao.

Hosts.

Trematerra (1988) reported Pyralis farinalis L ( Lepidoptera : Pyralidae ). as a host and here we record Curculionidae sp. on elm, Tachinidae sp. on Ptycholomoides aeriferanus Herrich-Schaffer ( Lepidoptera : Tortricidae ), and Tachinidae sp. on Laspeyresia grunertiana (Ratzeburg) ( Lepidoptera : Noctuoidea).

Distribution.

China (Heilongjiang, Jilin, Beijing); Palearctic and Nearctic regions.