Key to the Chinese species of the genus Aspicolpus Wesmael

1 Length of first tergite 1.1–1.3× its apical width (Figs. 1e, 2h, 3f, 4h)............................................. 2

- Length of first tergite 1.5–1.6× its apical width.............................................................. 7

2 Length of malar space 1.6–2.0× basal width of mandible (Figs. 3c, 4c)........................................... 3

- Length of malar space 1.0–1.3× basal width of mandible (Figs. 1c, 2c)........................................... 5

3 Metanotum without a median carina; ovipositor sheath 1.0–1.2× as long as fore wing............................... 4

- Metanotum with a short median carina (Fig. 4f); ovipositor sheath 0.7× as long as fore wing. China (Fujian). A. striatus sp. n.

4 Length of malar space 2× basal width of mandible (Fig. 3c); in dorsal view length of eye 1.3× temple (Fig. 3d); scutellum smooth, laterally and posteriorly rugose-punctate (Fig. 3e); dorsal carinae of first tergite distinct in basal two-thirds (Fig. 3f); second tergite reticulate-punctate anteriorly and medially, latero-posteriorly smooth (Fig. 3f); third tergite punctate baso-medially, remainder smooth (Fig. 3f). China (Jilin)................................................ A. jilinensis sp. n.

- Length of malar space 1.6× basal width of mandible; in dorsal view length of eye 1.5× temple; scutellum sparsely punctate; dorsal carinae of first tergite distinct and complete; second tergite and third tergite smooth. Kazakhstan; China (Xinjiang).................................................................................... A. erythrogaster Tobias

5 Antennomeres 25–31; palpi blackish brown; clypeus punctate with faint rugose, rather smooth apically; temple and scutellum rugose-reticulate. China (Taiwan) ..................................................... A. rugosus Chou et Hsu

- Antennomeres 38–39; palpi whitish yellow to yellow (Figs. 1c, 2b).............................................. 6

6 Frons smooth dorsally, punctate ventrally, medially crenulate-punctate (Fig. 1d); clypeus convex, coarsely rugose-punctate dorsally, ventrally striate and concave apical-medially (Fig. 1b). China (Zhejiang)................ A. clypeconcavus sp. n.

- Frons densely rugose-reticulate, medio-ventrally with a longitudinal carina (Fig. 2d); clypeus convex, its surface coarsely and densely rugose-punctate and almost straight ventrally (Fig. 2b). China (Tibet).................... A. frontirugatus sp. n.

7 Longitudinal carinae of first tergite being only indicated basally; second tergite reticulate-rugose on basal two-thirds; ovipositor sheath equal to body length. Russia; Japan; China (Nei Menggu).............................. A. jozanus (Watanabe)

- Longitudinal carinae of first tergite distinct in basal 0.6; second tergite smooth; length of ovipositor sheath shorter than body length. China (Taiwan) .............................................................. A. punctus Chou et Hsu