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Description de Maa (1963) :
Crown long, when viewed vertically to its plane, median length 1.5-2.5 X side length. Pleurostome 1.5 X as broad as lorum. Eye rather small, slightly narrower than tylus, nearly as long as broad when viewed vertically to plane of crown. Tylus distinctly broader than its distance to eye. Interocellar distance 2/3 of ocello-ocular distance. Pronotum much broader than head; median carina usually wanting; anterolateral margin about 2.5-3.0 X as long as interocellar distance, about 2/5-1/2 as long as posterolateral margin hardly reflexed; posterolateral margin less deeply sinuate than posterior margin. Scutellum slightly broader than interocular distance. Tegmen nearly hyaline or not transparent; veins very indistinct and rather intraspecifically variable; R often forked near apex; rm usually present; M1+2 and M3+4 usually long, M1+2 sometimes branched at apex, CU1 rather strong, apart from claval furrow; almost always 3 apical cells; preapical cell 3, when present, triangular, large, enclosed by M-stem, M3+4 and CU1; clavus apically very broadly rounded, 1A and 2A adnate at base; corial appendix subrectangular, 2/5-1/2 as long as broad claval appendix trapezoid. Apical 1/2 or 1/3 of tegmina evenly convex or rather abruptly bent mesad, when closed, corial appendices, and sometimes also apices of coria proper, overlapping one another and about 45°-60° to horizontal plane.