Polysphincta Gravenhorst 1829

Genus Polysphincta Gravenhorst, 1829

Diagnosis (after Gauld & Dubois, 2006). Mandibles: moderately tapered, upper tooth usually longer than the lower tooth. Clypeus: separated from face by a weakly impressed clypeofacial suture, the clypeus transverse, apically centrally truncate, with its lateral margins straight. Head: posteriorly more or less evenly rounded (Fig. 1 b), occipital carina mediodorsally complete, weakly raised, but not forming a flange. Pronotum: moderately long in profile, mediodorsally flat, or the hind margin with a weak shelf-like promontory; with a sharp vertical epomia. Mesoscutum: moderately long, convex, from densely pubescent to smooth and glabrous. Mesopleuron: with epicnemial carina present. Propodeum: moderately long, evenly declivous posteriorly, usually without carinae except lateral parts of the area apicalis; hind coxal socket not separated from metasomal foramen by a sclerotized bridge. Legs: Hind tibia without any trace of a longitudinal groove on inner surface. Wings: Fore wing with vein 3rs-m entirely absent. Hind wing with vein Cu1 present (Fig. 1 e). Metasoma with tergite I slightly elongate; tergite II with weak anterolateral oblique grooves, and centrally weakly convex; tergite III weakly biconvex, tergite IV almost evenly convex; all four tergites usually smooth and shining and from almost impunctate with only isolated fine punctures to densely punctate (especially between anterolateral swellings). Ovipositor straight or slightly sinuous, projecting beyond apex of metasoma by about at least 0.6-0.7 times length of hind tibia, moderately slender, rapierlike, with a distinct basal ventral swelling. Upper valve basally broadened, the tip of lower valves with oblique ridges (Fig. 1 f).