Key to Asian genera of Pamphagini

(For N. African genera see Massa 2012; for European genera see Harz 1975 and Llorente & Presa 1997)

1 Posteromedian projection of epiphallus with a distinct median incision at hind margin (Fig. 37 c); aedeagus very large, elongated; arch of zygoma short and completely in vertical position; tumida of zygoma very indistinct (Figs. 37 a, b, d); male supraanal plate not divided (Fig. 268)............................................ Paracinipe Descamps et Mounassif

- Posteromedian projection of epiphallus with straight or rounded hind margin (Figs. 32 c–36c); aedeagus small and wide; arch of zygoma long and sloping, not in vertical position; tumida of zygoma distinct (Figs. 32 a, b, d–36a, b, d); basal part of male supra-anal plate thickened separated from thin and triangular apical part by a distinct transversal suture (Fig. 269)........ 2

2 Antennae with flattened segments especially in proximal part, ensiform (Fig. 270); hind femur slender, very distinctly narrow and long (Fig. 272); mesosternal interspace clearly longer than wide (Fig. 274); aedeagus truncate or narrowly rounded at apex (Figs. 35 a, d, 36a, d)........................................................................ Orchamus Stål

- Antennae not flattened, more or less with rounded segments, almost filiform (Fig. 271); hind femur stout, wide and short (Fig. 273); mesosternal interspace clearly wider than long or at most slightly longer (in Prionosthenus) (Figs. 275–277); aedeagus pointed at apex (Figs. 32 a, d–34a, d)..................................................................... 3

3 Body strongly compressed laterally; median carina of pronotum and abdominal tergites strongly and sharply raised and prolonged posteriorly (Figs. 282–287); mesosternal interspace as wide as long or slightly longer than wide (Fig. 275); proximal part of antennae more flattened.................................................... Prionosthenus Bolívar, 1878

- Body more or less depressed dorso-ventrally; median carina of pronotum and abdominal tergites slightly raised or not raised, without sharp projections (Figs. 288–295); mesosternal interspace wider than long (Figs. 276–277); antennae with rounded segments........................................................................................... 4

4 Body strongly depressed dorso-ventrally in both sexes (Figs. 294–295); eye quite small and rounded; distance from the frontal ridge to the eye clearly longer than vertical diameter of eye in female (Fig. 279), at most as long as in male in lateral view (Fig. 278); vertex broad, clearly wider than transversal diameter of eye in female, slightly narrower in male; posterior lobes of zygoma, arch of zygoma and aedeagus slender, narrow and elongated in dorsal view (Fig. 34 b)........ Ocneropsis Uvarov

- Body much less depressed dorso-ventrally, relatively compressed laterally as well (Figs. 288–293); eye larger and oval; distance from the frontal ridge to the eye at most as long as vertical diameter of eye in female (Fig. 281) and distinctly shorter in male in lateral view (Fig. 280); vertex narrow, clearly narrower than transversal diameter of eye in male, at most as wide as in female; posterior lobes of zygoma, arch of zygoma and aedeagus stout, wide and short in dorsal view (Figs. 32 b, 33b)......................................................................................... Ocnerosthenus Massa