Genus Zaischnopsis Ashmead, 1904

Generic diagnosis

Females are characterized by the following characters (Gibson 1995, 2005): body usually dark with various metallic lusters, but sometimes yellow to brown; head with ventral margin of torulus lower than lower orbit, scrobal depression deep or not but dorsally delimiting linear or only very narrow region along upper inner orbit; antenna with scape sometimes slender though often variably compressed; clypeus flat; mandible tridentate; pronotum usually subtriangular and divided medially; mesoscutum usually flat with anterior and lateral parts slightly raised, posterior part slightly concave; mesopectus with setae, acropleuron usually bare; fore wing usually hyaline at base, infuscate beyond base of parastigma, and sometimes with one or more lighter colored band or spots behind marginal vein; mesotibia with oblique apical groove and with dark apical pegs in a patch; gaster elongate, base of gaster usually without white region unlike species of Anastatus; syntergum apically reflexed into fingernail like flange.

Key to females of Zaischnopsis from China

1. Fore wing infuscate beyond level of parastigma, gradually lightened distally but without hyaline cross-band or spot (Fig. 2E) ....................................................... Z. fuscolivida Tang & Peng sp. nov.

– Fore wing infuscate beyond level of parastigma and with hyaline cross-band or spot(s) behind marginal vein (Figs 1E, 3F, 4E, 5E, 6E) ........................................................................................... 2

2. Fore wing with single hyaline cross-band behind marginal vein (Fig. 4E) ...................................... 3

– Fore wing with one or two hyaline spots behind marginal vein (Figs 1E, 3F, 5E, 6E) .................... 6

3. Hyaline cross-band of fore wing very narrow, about ¹/5 to ¹/6 width of basal infuscate region (Peng et al. 2018: fig. 19) ............................................................................ Z. fumosa Peng & Xiang, 2018

– Hyaline cross-band of fore wing wide, usually about ½ to ⅓ width of basal infuscate part (Fig. 4E) ........................................................................................................................................................... 4

4. Head and mesosoma coppery-green (Fig. 2C); antenna with scape normal, not expanded (Fig. 2G) ............................................................................................................. Z. pacis Jiang & Peng sp. nov.

– Head and mesosoma dark brown with slight purple luster; antenna with scape foliaceously dilated (Peng et al. 2018: fig. 33) ................................................................................................................. 5

5. Metatibia with dorsal margin dark brown to black, though possibly superficially appearing white because of dense white setae (Peng et al. 2018: fig. 37); propodeum with plical region medially very short (Peng et al. 2018: fig. 39) ................................................................ Z. tubatius (Walker, 1852)

– Metatibia with basal half of dorsal margin white (Peng et al. 2018: fig. 8; cf. Fig. 5A); propodeum with plical region comparatively longer (Peng et al. 2018: fig. 2) ..................................................... ...................................................................................................... Z. candetibia Peng & Xiang, 2018

6. Fore wing with two hyaline triangular spots behind marginal vein, one anterior and one posterior (Fig. 1A); plical region comparatively long, distance between inner margins of spiracles only about 3.4 × as wide as median length of plical region (Figs 1I, 10A) .......... Z. covid Jiang & Peng sp. nov.

– Fore wing with one hyaline spot behind marginal vein anteriorly; plical region comparatively short, distance between inner margin of spiracles 7.3‒10× as wide as median length of plical region ..... 7

7. Fore wing with hyaline spot behind marginal vein triangular (Fig. 5E); antenna with eighth funicular ring-like, width about 2 × length (Fig. 5F); scrobal depression bell-shaped, with abrupt margins (Figs 5C, 7E) ....................................................................... Z. campaniformis Tang & Peng sp. nov.

– Fore wing with hyaline spot behind marginal vein round (Fig. 6E) or irregular in shape (Fig. 3F); antenna with eighth funicular no more than 1.6× as wide as long (Figs 3G, 6G); scrobal depression varied (Fig. 3D) ................................................................................................................................ 8

8. Fore wing spot behind marginal vein inconspicuous and irregular (Fig. 3F); scrobal depression comparatively broad, with rounded rather than abrupt margins (Figs 3C, 7C), dorsal margin of scrobal depression closed to anterior ocellus by distance about 0.2 × diameter of anterior ocellus (Figs 3D, 6D) ........................................................................................... Z. lii Jiang & Peng sp. nov.

– Fore wing spot behind marginal vein hyaline and round; scrobal depression with abrupt margins, dorsal margin of scrobal depression separated from anterior ocellus by distance equal to or more than diameter of anterior ocellus (Fig. 6D) ...................................................................................... 9

9. Scutellum coppery, mesoscutum with dense white setae (Peng et al. 2018: fig. 22) ......................... ...................................................................................................... Z. nivalinota Peng & Xiang, 2018

– Scutellum greenish, mesoscutum with sparse brown setae (Fig. 6B) ................................................. .......................................................................................................... Z. zhongi Jiang & Peng sp. nov.