“ marginicollis ” species group

Diagnosis. Smaller to medium-sized species, 13.5–16.5 mm long. Antennomeres 1–4 and femora with at least terminal ends brown or black. Elytra elongate oval with humeri strongly rounded, punctate in basal third, with deep subsutural foveae; apical margin not serrate. Body black or dark brown with green and often also slight purple metallic sheen; unicolorous.