Pachybrachis confusus, Bowditch, 1909

Barney, Robert J., 2019, Key to All Sixty-Four Species of Pachybrachis Chevrolat (Coleoptera: Chrysomelidae: Cryptocephalinae) in the Eastern USA, The Coleopterists Bulletin 73 (1), pp. 85-96 : 87

17. Pronotum black, margined with yellowish white; face yellow with black median line extending down from vertex between eyes, forming distinctive paired, yellow, inverted triangular maculae; eyes widely separated (IOD = 0.32–0.43 mm); median lobe in enface view with ALM gently curved to rounded terminus; OS circular, basal plates sclerotized; beard with long setae visible from ALM to terminus; in lateral view, shaft inflated but truncate ............................... .......... 14. P. confusus Bowditch (in part)

17 ʹ. Prothorax or elytra margined with red; face color variable; eyes not widely separated (IOD = 0.13–0.30 mm); median lobe not as above ............................................. 18