Operclipygus impressifrons Caterino & Tishechkin 2013

This species is very similar to Operclipygus angulifer, differing in the following characters: length: 2.25–2.50 mm, width: 1.87–2.06 mm; frons less deeply depressed at middle, frontal stria usually interrupted on each side, isolating central portion; pronotum with prescutellar impression slightly larger than scutellum; lateral submarginal pronotal stria frequently interrupted along side, present at base and apex; elytra with 4th dorsal stria abruptly angled inward at base toward, rarely connected with, base of sutural stria; mesoventrite with marginal stria complete; mesometaventral stria usually more or less continuous with lateral metaventral stria, the latter never extending inward to near the midline; propygidium with larger punctures extending to sides, ground punctation not conspicuous; coarser punctures of pygidium larger and more numerous; marginal pygidial stria fine, restricted to apical half of pygidial margin or less. Male genitalia (Figs 29D, E) extremely similar to those of Operclipygus angulifer, but with S9 slightly narrower, and with the tegmen more nearly parallel-sided throughout its length.