Pachybrachis atomarius, (F. E. Melsheimer)

Barney, Robert J., 2018, Definition and Revision of the Atomarius Species-Group of North American Pachybrachis Chevrolat (Coleoptera: Chrysomelidae: Cryptocephalinae), Including Descriptions of Nine New Species, The Coleopterists Bulletin 72 (1), pp. 9-74 : 12

5. Face of male primarily pale yellow with black mid-line reduced; pygidium entirely black, protruding ( Fig. 4 ) ......... ....... 4. P. atomarius (F. E. Melsheimer)

5 ʹ. Face of male not primarily pale yellow, usually with diffuse, W-shaped macula connecting vertex and bases of antennae, and up to base of upper lobes of eyes to entirely black; pygidium not entirely black, not protruding ...................................... 6

Figures

Fig. 4. Pachybrachis atomarius. A) Dorsal habitus, B) Lateral habitus, C) Face, D) Pygidium, E) Median lobe of aedeagus, lateral view, F) Median lobe of aedeagus, en-face view.