Figs. 1–3. 1) Pachybrachis median lobe (diagrammatic), lateral view, BC = basal constriction, BP = basal piece, K = keel, OS = orificial space, POL = postorificial length; PRL = preorificial length, S = shaft, TG = tegmin, W = wisp; 2) Pachybrachis median lobe (diagrammatic), en-face view, ALM = apicolateral margin, BF = basal lateral fold, DEO = distal en-face outline, LBP = lateral basal plate, MBP = median basal plate, N = nodule, T = terminus; 3) Pachybrachis picturatus, median lobe, en-face and lateral views.

Published as part of Riley, Edward G. & Barney, Robert J., 2015, Definition And Revision Of The Viduatus Species- Group Of North American Pachybrachis Chevrolat (Coleoptera: Chrysomelidae: Cryptocephalinae), pp. 25-59 in The Coleopterists Bulletin 69 (1) on page 28, DOI: 10.1649/0010-065X-69.1.25, http://zenodo.org/record/10085684