Coelopisthia dasycladus, 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 : 549-550

Coelopisthia dasycladus sp. nov. ( Figs 9–14 )

Female. Length 2.0 mm. Body ( Fig. 9 ) dark green with blue reflection except gaster brown. Antenna pale brown except scape and pedicel yellowish brown. Wings hyaline with pale clouding. Legs yellowish brown except coxae concolorous with mesosoma.

Head in frontal view ( Fig. 11 ) about 1.3 times as high as wide; head height 1.6 times of eye height, eye space 1.3 times of eye height; upper face and lower face with finely raised reticulation; scrobe shallow and reticulated densely, reaching lower anterior ocellus. Clypeus smooth and epistomal sulcus indistinct, lower margin of clypeus shallowly emarginate with two obtuse teeth. Head in lateral view ( Fig. 10 ), face protuberant at antennal insertion, the angle of lower face with upper face about 110°; malar sulcus indistinct, malar space short; eye height 4.4 times of malar space. Antenna inserted at lower face, below lower ocular line; scape reaching lower margin of anterior ocellus, longer than eye height; pedicel and flagellum combined 0.97 times as long as head width; antenna ( Fig. 10 ) not clavate, first anellus transverse, second anellus subquadrate; each funicular segment quadrate, bearing one row of longitudinal sensilla; clava 2 times as long as its greatest width, longer than Fu 5 and Fu 6 combined (about 1.38 times); the third claval segment with small area of micropilosity. Head in dorsal view 2 times as wide as long ( Fig. 12 ); anterior and posterior ocelli on obtuse angle; POL 1.6 times of OOL; eye length 2.5 times as long as temple.

Thorax in dorsal view distinctly narrower than head width, head width about 1.4 times as long as mesosoma; mesosoma slightly flat in lateral view. Pronotum 1/5 length of mesoscutum, collar short and not margined. Mesoscutum 2 times as wide as long, notauli incomplete; propodeum longer than 1/2 length of scutellum, median carina and plica complete ( Fig. 13 ), nucha short and with irregular transverse carinulae on posterior part; propodeal spiracles long circle, about 2.5 times as long as wide. Fore wing broad and sparsely hairy ( Fig. 14 ), 2.08 times as long as wide; costal cell bare on upper surface and with a row of setae on ventral surface; basal vein and basal cell bare; speculum reaching base of stigmal vein; submarginal vein 2.17 times as long as marginal vein, marginal vein 2 times as long as postmarginal vein, postmarginal vein as long as stigmal vein.

Metasoma slightly longer than mesosoma (1.05 times of mesosoma); petiole invisible in dorsal view; gaster subcircular ( Fig. 13 ), 1.3 times as long as wide, 1.3 times as wide as mesosoma; Gt 1 about 1/3 length of gaster.

Male. Unknown.

Specimens examined. Holotype ♀, China, Beijing, Mentougou, Xiaolongmen (39°56ʹN, 116°05ʹE) (elev. 2 000 m), 4 July 2002, coll. Wen-Quan Zhen ( IZCAS).

Diagnosis. We compared the new species with Coelopisthia extenta (Walker) (1♀, France: Vauclusei Mont Ventoux (elev. 1 200 m), 24 August 1988, coll. Bouček, det. Bouček in 1988, det. Baur in 2002) and found that the new species similar to C. extenta (Walker) , but the antenna with the first anellus transverse and the second subquadrate (two anelli quadrate in C. extenta ).

Biology. Unknown.

Distribution. China (Beijing).

Etymology. The specific name refers to the antenna with each funicular segment as long as broad.

© Zoological Systematics, 39(4): 545–554

© Zoological Systematics, 39(4): 545–554

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.