Vipio Latreille

Key to Chinese species of the genus Vipio Latreille

1. Second metasomal tergite flat medio-anteriorly, or at most weakly raised, but without triangular medio-basal area; lateral grooves of first tergite smooth; ovipositor sheath 2.0 × as long as body........................... V. abnormis sp. nov.

- Second metasomal tergite with triangular medio-basal area distinctly developed; lateral grooves of first tergite crenulate; length of ovipositor sheath variable............................................................................ 2

2. Second metasomal tergite only weakly sculptured or wrinkled around triangular medio-basal area; ovipositor sheath 1.5–2.0 × length of body........................................................................................ 3

- Second metasomal tergite largely sculptured around triangular medio-basal area; length of ovipositor sheath variable...... 4

3. Second metasomal tergite 1.0–1.2 × longer than wide; hind femur without black stripe ventrally; propodeum and hind coxa yellowish brown; second metasomal tergite usually smooth around triangular medio-basal area.................................................................................................... V. mongolicus Telenga, 1936

- Second metasomal tergite noticeably shorter than wide; hind femur with black stripe ventrally; propodeum and hind coxa black; second metasomal tergite with few rugae around triangular medio-basal area................ V. sareptanus Kawall, 1865

4. Propodeum yellowish brown; ovipositor about 1.5 × as long as body; second metasomal tergite almost square................................................................................ V. appellator (Nees von Esenbeck, 1834)

- Propodeum often black; ovipositor about as long as body; second metasomal tergite transverse.................................................................................................... V. intermedius Szépligeti, 1896