Key to species of Allophrys occurring in Vietnam

1. Vertex polished (Fig. 11). Mesopleuron centrally finely granulate, impunctate, dull (Fig. 13). Fore wing with second recurrent vein (2 m-cu) completely absent (Fig. 12)................................................. A. occipitata Khalaim

- Vertex granulate, dull or weakly shining (Fig. 2). Mesopleuron smooth or granulate, but always with fine to rather strong punctures. Fore wing with second recurrent vein (2 m-cu) distinct at least in its posterior half (Fig. 9)....................... 2

2. Subapical flagellomeres 1.6–1.8× as long as broad (Fig. 6). Fore wing with second recurrent vein (2 m-cu) antefurcal (Fig. 9). Hind wing with nervellus (cu 1& cu-a) weakly reclivous, slanted about 70° from horizontal............ A. davichia sp. nov.

- Subapical flagellomeres 1.1–1.4× as long as broad (Figs 2, 14). Fore wing with second recurrent vein (2 m-cu) postfurcal or interstitial. Hind wing with nervellus (cu 1& cu-a) strongly reclivous, slanted about 45° from horizontal (Fig. 15).......... 3

3. Basal area of propodeum short, 0.2–0.3× as long as apical area (Fig. 3). Malar space 0.7–0.8× as long as basal mandibular width. Flagellum with 14–15 flagellomeres (Fig. 2). Legs yellow (Fig. 1).......................... A. daklaka sp. nov.

- Basal area of propodeum long, about 0.8× as long as apical area (Fig. 16). Malar space 1.0–1.2× as long as basal mandibular width (Fig. 14). Flagellum with 13 flagellomeres (Fig. 14). At least hind coxa extensively brown basally (Fig. 15)................................................................................................ A. tonkina sp. nov.