Operclipygus setiventris Caterino & Tishechkin 2013

This species is extremely similar to Operclipygus depressus, differing most significantly in showing quite pronounced sexual dimorphism; length: 2.37–2.71 mm, width: 1.97–2.31 mm; body rufescent, broadly rounded, more subdepressed than typical in this group, with relatively long legs and narrow tibiae; pronotal disk with relatively small but numerous (~22) lateral discal punctures; lateral submarginal pronotal stria increasingly distant from margin anterad (as in Operclipygus depressus); elytral striae as in Operclipygus sejunctus but with stria 4 finely impressed and fragmented anteriorly in some individuals; coarser elytral punctures densest at apex, but with few coarse punctures extending up the apical third of interstriae; sterna of female as in Operclipygus depressus, meso- and metaventral disks of male broadly depressed and setose, most of the punctures being strong ground punctures bearing setae, with only a few coarser punctures near metacoxae; outer lateral metaventral stria long, extending from mesometaventral suture along at least half of inner stria; propygidium and pygidium as in Operclipygus sejunctus.Male genitalia (Fig. 21) highly autapomorphic: accessory sclerites present; T8 elongate, parallel-sided in apical two-thirds, widened at base, with basal membrane attachment line distad basal emargination by about half its depth, apical emargination narrow, ventrolateral apodemes well-developed, meeting at midline about one-third from base, diverging to apex; S8 with halves separate, sides parallel and apical guides narrow over basal 3/4, then abruptly divergent and downturned at apex; S9 narrowest near apex, weakly widened then narrowed to base, apex more or less truncate, with shallow apical emargination, apical flanges small, midline sclerotized; tegmen short, only slightly longer than basal piece, widest just basad midpoint, weakly narrowed to base, more strongly narrowed to narrow apex, medioventral process wide, short, thin, with a blunt apex about one-third from base, strongly produced beneath; median lobe about one-half tegmen length.