Coelopisthia gracilentus, Jiao & Xiao, 2014

Jiao, Tian-Yang & Xiao, Hui, 2014, Taxonomic review of the genus Coelopisthia Förster (Hymenoptera: Pteromalidae) from China, with four new species, Zoological Systematics 39 (4), pp. 545-554 : 551

Coelopisthia gracilentus sp. nov. ( Figs 15–19 )

Female. Length 2.0 mm. Body ( Figs 16–17 ) dark with metallic reflection except gaster dark brown. Antenna pale brown except scape, pedicel and Fu 1 yellowish brown. Mandibles dark fuscous but teeth testaceous. Wings hyaline with pale clouding, veins yellowish brown. Legs yellowish brown except hind coxae dark, fore and mid coxae brown.

Head in frontal view ( Fig. 15 ) about 1.3 times as high as wide; head height 1.47 times of eye height, eye space 1.23 times of eye height; upper face and lower face with densely raised reticulation; scrobe moderately deep, not reaching lower anterior ocellus. Lower face with clypeal area finely stiate; epistomal sulcus distinct, clypeal margin broadly emarginate. Head in lateral view ( Fig. 17 ), face protuberant at antennal insertion, the angle of lower face with upper face about 110°; malar sulcus indistinct; eye height 3 times of malar space. Antenna ( Fig. 18 ) insertion placed on lower ocular line; scape shorter than eye height (0.9 times), not reaching lower margin of anterior ocellus; pedicel and flagellum combined slightly shorter than head width (about 0.94 times); antenna slim, first anellus transverse, second anellus quadrate; each funicular segment longer than broad respectively, bearing one row of longitudinal sensilla; clava 2.25 times as long as its greatest width; the third claval segment with small area of micropilosity. Head in dorsal view 1.67 times as wide as long; anterior and posterior ocelli on obtuse angle; POL 1.58 times of OOL; eye length 1.76 times as long as temple.

Thorax in dorsal view distinctly narrower than head width, head width about 1.32 times as long as mesosoma; mesosoma slightly convex in lateral view. Pronotum 0.88 times as wide as mesoscutum, collar short and not margined. Mesoscutum 2 times as wide as long, notauli incomplete; propodeum 1/2 length of scutellum, median carina absent ( Fig. 19 ), plica indistinct, nucha short and smooth on posterior part; propodeal spiracles ellipse, about 2 times as long as wide. Fore wing broad, 2.1 times as long as wide; costal cell bare on upper surface and with a row of setae at end of part on ventral surface; basal vein and basal cell bare; speculum reaching base of stigmal vein; submarginal vein 2.5 times as long as marginal vein, marginal vein 2 times as long as postmarginal vein, postmarginal vein as long as stigmal vein, stigmal slightly clavate as quadrate.

Metasoma slightly longer than mesosoma (1.1 times of mesosoma); petiole invisible in dorsal view; gaster ovate, 1.1 times as long as wide, 1.41 times as wide as mesosoma; Gt 1 about 1/3 length of gaster, hind margin of each tergite straight.

Male. Body length 1.5 mm; head and thorax blue green, gaster brown and with metallic reflection on base part; antennae pale yellow except pedicel pale brown in dorsal view; legs yellowish brown except coxae brown. Antenna with two anelli transverse.

Specimens examined. Holotype ♀, China, Inner Mongolia, Zhongqi , 17 July 1980, ex. Gypsonoma minutara Hübner , coll. Xu-Chang Huang ( IZCAS) . Paratype 1♂, same data as holotype .

Diagnosis. The new species is somewhat similar to C. dasycladus sp. nov. with the marginal vein 2 times as long as stigmal vein, postmarginal vein as long as stigmal vein, but can be separated from C. dasycladus sp. nov. by the antenna with each funicular segment longer than its broad, clypeal margin broadly emarginated, propodeum without median carina and plica. In C. dasycladus sp. nov., the antenna with each funicular segment quadrate, clypeal margin with two broad teeth, propodeum with median carina and plica complete.

Biology. Reared from Gypsonoma minutara HÜbner ( Lepidoptera : Tortricidae ).

Distribution. China (Inner Mongolia).

Etymology. The specific name refers to the antenna slim, each funicular segment longer than the broad.

Figures

Figs 9–19. Coelopisthia dasycladus sp. nov. and C. gracilentus sp. nov. 9–14. C. dasycladus sp. nov. female. 9. Body dorsal. 10. Head lateral. 11. Head frontal. 12. Head and thorax dorsal. 13. Propodeum and gaster dorsal. 14. Fore wing dorsal. 15–19. C. gracilentus sp. nov. female. 15. Head frontal. 16. Body dorsal. 17. Body lateral. 18. Antenna. 16. Propodeum dorsal.