Key to species of the “ marginicollis ” group

1 Elytral punctation limited to basal half, apex smooth. Femora black or dark brown throughout (Fig. 1)................................................................................................ P. marginicollis (Sloane, 1906)

– Elytral punctation restricted to basal half, at least one (third) row of foveae reaching base; foveae large and deep, widely spaced from base to apex; sometimes also sutural (first) row of fine, small, closely spaced foveae similarly extended. Femora yellowish, only their distal quarters to fifths black or dark brown (Figs 2–3)..................... P. timberensis sp. nov.