Adelencyrtus chinensis Xu & Shi

Zhang, Yan-Zhou & Shi, Zhen-Ya, 2010, The species of Adelencyrtus Ashmead and Epitetracnemus Girault (Hymenoptera: Encyrtidae) from China, Zootaxa 2605, pp. 1-26 : 9-10

6. Adelencyrtus chinensis Xu & Shi

( Figs 26−31 )

Adelencyrtus chinensis Xu and Shi, 1999: 202 −203, 206. Holotype Ψ (HNAU, examined), China. Adelencyrtus chinensis ; Zhang & Huang, 2004: 22; Xu & Huang, 2004: 36.

Description. Female. Body length 1.0− 1.6 mm. Body dark brown with greenish-blue sheen; antenna generally dark or dark brown with F1−4 dark brownish, F5 and F6 yellowish; fore wing ( Fig. 27 ) distinctly infuscate, with two hyaline spots beyond stigmal vein; basal cell with setae along submarginal vein translucent, thus forming a hyaline strip below submarginal vein; fore leg yellowish except tibia marked with dark brown ( Fig. 28 ); mid leg yellowish except coxa, subapical part of femur, and tibia subbasally marked with dark brown ( Fig. 29 ); hind leg yellow except coxa, nearly entire femur, and tibia subbasally dark brown ( Fig. 30 ).

Head. Frontoverex about 1/5 head width; ocelli arranged in an angle of about 45º; posterior ocelli touching inner eye margin, and separated from occipital margin by about 3 × its own diameter; antennal scape slightly dilated, about 4 × as long as broad; F1−F4 transverse and subequal in size, F5 and F6 subquadrate but often slightly longer than broad ( Fig. 26 ); mandible quadridentate.

Thorax. Fore wing about 2.6 × as long as broad; marginal vein about 3 × as long as broad; postmarginal vein about half as long as marginal vein; stigmal vein a little longer than postmarginal vein ( Fig. 27 ).

Gaster. Ovipositor sheaths ( Fig. 31 ) slightly exserted, by about 1/7 gaster length.

Relative measurements. MT 52, OL 80, GL 22.

Male. Unknown.

Host. Unaspis yanonensis (Kuwana) ( Xu & Shi 1999) .

Distribution. China (Hunan, Guangxi).

Type material examined. CHINA: Hunan, Yongshun, ex. Unaspis yanonensis on Citrus , x.1989, coll. F.Z. Li (holotype Ψ and 5ΨΨ paratypes, HNAU).

Non-type material examined. CHINA: Guangxi, Guilin, ex. Unaspis yanonensis on Citrus , 21.vi −15.viii.1979 (5 ΨΨ).

Comments. Adelencyrtus chinensis can be separated from A. orientalis and A. brachycaudae by the characters given in the key. More over, as noted in the original description of A. chinensis , the basal cell of the fore wing has the setae along the submarginal vein translucent so as to form a hyaline strip below the submarginal vein.

Figures

FIGURES 26 − 31. 26 − 31, Adelencyrtus chinensis, female: 26, antenna; 27, fore wing; 28, fore leg; 29, mid leg; 30, hind leg; 31, gaster showing ovipositor.