Epitetracnemus bandus, Zhang, Yan-Zhou & Shi, Zhen-Ya, 2010

Zhang, Yan-Zhou & Shi, Zhen-Ya, 2010, The species of Adelencyrtus Ashmead and Epitetracnemus Girault (Hymenoptera: Encyrtidae) from China, Zootaxa 2605, pp. 1-26 : 17-19

1. Epitetracnemus bandus sp. n.

( Figs 51−54 )

Description. Female. Body length about 1.6 mm. Body ( Fig. 51 ) dark brown with a metallic green-blue sheen; mesoscutum with emerald-green metallic reflections, scutellum darker than mesoscutum, with goldenpurplish metallic reflections; antenna dark brown except F5 and F6 yellow; fore wing infuscate as in Fig. 53 ; all legs including coxae dark brown except base of mid femur, apices of all tibiae and all tarsi yellowish. Head. Frontovertex at anterior ocellus a little more than 1/4 head width; ocelli forming an angle of about 50º; posterior ocellus separated from inner eye margin by at most 1/3 its own diameter, and from occipital margin by twice its own diameter; antenna ( Fig. 52 ) with scape about 2.6 × as long as broad; F1−F3 subquadrate or slightly wider than long, F4−F6 quadrate; clava 3-segmented, apically rounded; mandible with two teeth and an upper truncation.

Thorax. Mesoscutum scaly reticulate; scutellum with same sculpture and hardly deeper than on mesoscutum, except smooth posteriorly; fore wing about 2.4× as long as broad, with a distinct infuscate pattern as in Fig. 53 ; marginal vein twice as long as broad, postmarginal vein well developed and about as long as marginal vein; stigmal vein almost the same length as marginal vein.

Gaster. Gaster ( Fig. 54 ) about as long as thorax; cercal plates located in the basal 1/5 of gaster; ovipositor sheaths slightly exserted, by about 1/8 gaster length.

Relative measurements. MT 63, OL 70, GL 18.

Male. Unknown.

Host. Chionaspis sp.

Distribution. China (Hianan, Yunnan).

Holotype. Ψ ( IZCAS), CHINA: Hianan, Jianfeng Mt., 24.v.1964, ex. Chionaspis sp., coll. D.X. Liao.

Paratypes. China: same data as holotype (10 ΨΨ); Yunnan, Xishuangbanna, 24.vii.2008, coll. G. Zheng (1 Ψ).

Comments. Epitetracnemus bandus differs from all known species of Epitetracnemus by the following: scutellum with sculpture hardly deeper than mesoscutum; fore wing with postmarginal vein as long as stigmal vein and fore wing infuscated as in Fig. 53 . Other than these three features, this species shows many character states in common with other members of the genus, such as head shape, facial impression with a transverse line of silvery white setae at the top of the antennal scrobes and its mandible with two teeth and an upper truncation. Therefore, we believe it is best placed in Epitetracnemus .

Figures

FIGURES 51 − 54. 51 − 54, Epitetracnemus bandus sp. n., female: 51, body in dorsal view; 52, antenna; 53, fore wing; 54, gaster showing ovipositor.