c. Dicaelus elongatus
Elongate, rather slender, subconvex; black, shining. Pronotum quadrate; margins feeble reflexed; posterior angles broadly rounded; basal impressions deep, sublinear; transverse basal impression shallow. Elytral striae deep, impunctate; humeral carina extending to beyond middle; intervals subconvex, alutaceous, and punctate. Length 15 - 18 mm. d. Dicaelus furvus Dejean Readily told from the other black species by the wide and narrow intervals alternating on the elytra. The humeral carinae almost reach the apex. It is rather dull. 15 -16 mm. long and ranges in the North Central US.