KEY TO SPECIES OF BELLADESSUS

1. Anterior clypeal margin thickened and distinctly but weakly bordered; eastern Venezuela and Suriname (Fig. 8) ............ B. femineus

1ʹ. Anterior clypeal margin strongly modified, flattened and prominently beaded ............... 2

2. Males present; male median lobe very broad and evenly curved in lateral aspect (Fig. 2), slender and apically bifid in ventral aspect (Fig. 3); basal elytral stria distinctly longer than basal pronotal stria (Fig. 1); dorsal color pattern complex, including extensive maculations and fasciae, with dark brown along posterior margin of pronotum (Fig. 1); Peru (Fig. 8) ........................ B. soqtapata, new species

2ʹ. Males apparently absent; basal elytral stria similar in length to basal pronotal stria (Fig. 7); dorsal color pattern simpler, restricted to a few larger maculae, entire pronotum yellow-orange (Fig. 7); western Venezuela (Fig. 8) ............. ................................................. B. puella