1	Pronotum with two very short but distinct longitudinal sublateral impressions basally; transverse sulcus absent ante-basally (Fig. 103). Elytral punctation confused, finely but distinctly and densely impressed, mainly in basal half (Fig. 103). Body larger (LB > 3.90 mm), subsphaerical (Fig. 103)	Toxaria Weise, 1903 (Fig. 103)
–	Pronotum with transverse sulcus ante-basally, sometimes very slightly impressed. Elytral punctation generally very slightly or indistinctly impressed (Fig. 101), sometimes subseriate (Fig. 18). Body smaller (LB ≤ 3.90 mm), oval or elliptical (Fig. 18, 101)	2
2	Pronotum comparatively smaller (LE/LP > 2.80), slightly rounded laterally; transverse sulcus always distinctly impressed ante-basally, bounded by two distinct longitudinal striae laterally (Fig. 101)	Stuckenbergiana Scherer, 1963 (Fig. 101)
–	Pronotum comparatively larger (LE/LP ≤ 2.80), more distinctly rounded laterally; transverse sulcus very slightly impressed ante-basally, not bounded laterally and sometimes only visible medially (Fig. 18)	Bechuana Scherer, 1970 (Fig. 18)