Operclipygus prominens Caterino & Tishechkin 2013

Nearly indistinguishable from Operclipygus callifrons, except as follows; length: 1.25–1.37 mm, width: 0.97–1.06 mm; body distinctly smaller, slightly more elongate and dorsally convex; anterior submarginal pronotal striae with sides recurved posterad between one-third to one-half pronotal length; lateral submarginal striae strongly abbreviated posteriorly, nearly absent in one of the paratypes; elytra with ground punctation rather conspicuous; coarse punctures of propygidium very sparse, separated by 2× their diameters or more, absent from fairly broad basal band; pygidium with coarse punctures slightly smaller and sparser than in Operclipygus callifrons, marginal pygidial sulcus fine, deep. Male genitalia more or less indistinguishable from those of Operclipygus subterraneus (see Figs 36F–H), though aedeagus smaller in overall size, slightly more narrowed to base.