Key to the species of Niphetoscapha Heller

1 Elytron and pronotum with irregular rough sculpture composed of wrinkles, pits and tubercles, densely covered with scales and setae more or less obscured by greenish encrustations (Figs. 5–6)..................... G. inexspectatus Riedel sp. n.

– Elytron and pronotum with weak sculpture, at most coriaceous; at most elytron partially squamose.................... 2

2 Elytra with subapical tubercles distinct, laterally projecting; surface rather polished; base usually with fovea filled with brownish exudates (Fig.39)............................................................................ G. nitidus

– Elytra with subapical tubercles indistinct, weakly projecting; surface dull, and / or partly squamose; base without fovea filled with brownish exudates................................................................................. 3

3 Elytral intervals 4–6 longitudinally impressed and sparsely squamose. Pronotum smooth, weakly punctate (Fig. 16).................................................................................................. G. wichmanni

– Elytron without longitudinal impression; with coriaceous sculpture, without scales. Pronotum punctate-granulate (Fig. 13)................................................................................................ G. audax