Key to the Oriental species of Chorinaeus Holmgren, 1858

1. Propodeal spiracle more close to pleural carina; malar space 2.0–3.0 × as long as basal width of mandible.......................................................................................... Chorinaeus facialis Chao, 1981

– Propodeal spiracle more close to lateral carina (Figs 2B, 4B); malar space less than 2.0 × as long as basal width of mandible. ................................................................................................... 2

2. Face, clypeus and malar space yellow (Figs 3B, D).......................................................... 3

– Face brown or at least with brown patch (Figs 1B, D), clypeus and malar space brown (Figs 1B, D).................... 4

3. Antenna with 38 antennomeres; second metasomal tergite with short sublateral longitudinal carina basally; hind femur black; hind tibia black in apical half, remainder yellow............................ Chorinaeus ryukyuensis Kusigemati, 1987

– Antenna with 25 antennomeres (Fig. 3A); second metasomal tergite without sublateral longitudinal carina (Figs 4B, C); hind femur brown medially, yellow basally and apically (Fig. 3A); hind tibia completely yellow (Fig. 3A).................................................................................. Chorinaeus femiae Ranjith & Butcher sp. nov.

4. Lateral carina of scutellum very weak or obsolete; first flagellomere 2.5 × as long as wide; first metasomal tergite smooth without punctures.................................................... Chorinaeus aizanensis Kusigemati, 1967

– Lateral carina of scutellum strong and complete (Figs 1F, 2A); first flagellomere 2.8 × as long as wide; first metasomal tergite smooth anterior half, rugose-punctate posterior half (Fig. 2D)............ Chorinaeus amrithae Ranjith & Butcher sp. nov.