1 Body large, 3–4 mm long; anterior margin of pronotum strongly arched at middle; tibiae of median and posterior legs arcuate (South Palaearctic region: Europe, North Africa, Turan-Persian subregion)................. Z. (Z.) curtus (Germar 1844)
- Body small, 1.8–2.8 mm long; anterior margin of pronotum weakly or not arched at middle; tibiae of legs not arcuate, simple..................................................................................................... 2
2 Sides of elytra parallel from base to middle in dorsal view, and gradually tapering to apex............................ 3
- Sides of elytra ovate, widest in middle, gradually narrowing to both base and apex (European subregion)......................................................................................... Z. (Z.) pumilio (Kiesenwetter 1858)
3 Pronotum densely granulate on the whole surface, some with smooth median line (European subregion)............................................................................... Z. (Z.) meridionalis (Laporte de Castelnau 1840)
- Pronotum granulate on anterior median part, without median smooth median line................................. 4
4 2 nd and 3 rd antennomeres subequal (Fig. 2 D); granules on surface of pronotum more widely spread near anterior margin, forming a triangular granulate area (Fig. 3 H); prosternum with minute granules on the anteromedian part; scutellum convex (Fig. 2 D, H) (Turan-Persian subregion: Kazakhstan).................................... Z. (Z.) gurjevae Dolin 1995
- 2 nd antennomere 1.2 times longer than 3 rd one (Fig. 2 C); granules on surface of pronotum densely distributed near anterior margin, forming a longitudinal granulate line (Fig. 3 C, G); prosternum with distinctly and widely granules on the anteromedian part; scutellum flat (Fig. 2 G) (East Asian subregion: Korea)........................ Z. (Z.) mansusanensis sp. nov.