Of small or moderate size, oval, robust, subconvex; next to last segment of labial palpi shorter than apical and with more than two setae anteriorly; basal two or three segments of antennae carinate; pronotum transverse, ususally narrowed anteriorly, base wider than apex; elytra without dorsal punctures; metepisternum elongate.

1. Length from 7 - 10 mm.............................................................................................2

Length from 6 - 7 mm...............................................................................a. cupreolata

2. Dark bronze, sometimes with greenish tinge......................................b. impuncticollis

Piceous to black..............................................................................................c. exarata