Operclipygus guianensis Caterino & Tishechkin 2013

In external characters, the differences between this species and the preceding are few and minor, as follows: length: 2.56–2.65 mm, width: 2.34–2.43 mm; frons not markedly depressed at middle; pronotal disk with larger number of coarser punctures near sides, ~10-15 in dense cluster just anterad middle; median pronotal gland openings near one-third from anterior margin of pronotum; elytra with outer subhumeral stria usually complete, striae 1-3 less distinctly abbrevated at base; 1st abdominal ventrite with outer lateral stria curved behind metacoxa, ending in a distinctly enlarged gland opening. Male genitalia: T8 identical to that of Operclipygus hirsutipes (Fig. 55A); S8 with apices more broadly rounded(Fig. 55E), and inner edges more strongly divergent from near base; T9 identical to above; T10 small as above, but with halves fused for short distance at base; S9(Fig. 55F) narrower overall, with deeper, broader apical emargination; tegmen(Fig. 55H) similar in shape to above, with sides more rounded toward apex, and with medioventral process present, broadly ‘V’-shaped, weakly sclerotized but with acute apex, not projecting beneath tegmen; median lobe long, with wide gonopore, proximal apodemes about three-fourths tegmen length, abruptly narrowed midway to base of tegmen.