FIGURES 47–52 in On the tribal classification of the Nearctic Melolonthinae (Coleoptera: Scarabaeidae), with descriptions of new species of Acoma Casey, 1889

FIGURES 47–52. Characters of abdomen and pronotum. 47, Hoplia trifasciata Say, 1825 ventral abdomen showing the distinct sutures; 48, Chnaunanthus flavipennis (Horn, 1867) ventral abdomen showing the lack of visible sutures; 49, Phyllophaga hirticula (Knoch, 1801) anterior pronotal margin without a translucent border; 50, Polyphylla variolosa (Hentz, 1830) anterior pronotal margin without a translucent border; 51, Macrodactylus subspinosus (Fabricius, 1775) anterior pronotal margin with a translucent border somewhat obscured by scales; 52, Phobetus comatus LeConte, 1856 anterior pronotal margin with a clearlydefined translucent border.