Scriptured Leaf Beetles

Figure 6.Pronotum: a reddish, with close-up of marginal bead, Pachybrachis bivittatus b mottled, Pachybrachis spumarius c with black M-mark, Pachybrachis m-nigrum d almost black, Pachybrachis nigricornis carbonarius.

Figure 7.Elytral punctures and coloration: a in rows in deep striae, Pachybrachis luctuosus b confused in basal half, in rows in apical half, Pachybrachis calcaratus c all confused, Pachybrachis hepaticus d confused and mottled, Pachybrachis spumarius e vittate with marginal vitta interrupted, Pachybrachis bivattatus f black, margined with yellow, Pachybrachis nigriconis carbonarius g entirely black, Pachybrachis luridus.

Figure 8.Pygidium: a largely yellow, Pachybrachis bivittatus b with well-defined yellow spots, Pachybrachis cephalicus c with faint reddish spots, Pachybrachis spumarius d black, Pachybrachis atomarius.

Figure 9.Sexes: a male abdomen, ventral view, Pachybrachis bivittatus b female abdomen, ventral view, Pachybrachis bivittatus.

Figure 10.Aedeagus: a lateral view, Pachybrachis luctuosus b lateral view, Pachybrachis spumarius c apex, dorsal view, Pachybrachis spumarius.

Habitus 2.Dorsal habitus of Pachybrachis bivittatus. Scale bar, 1 mm.

Habitus 10.Dorsal habitus of Pachybrachis obsoletus. Scale bar, 1 mm.

Habitus 16.Dorsal habitus of Pachybrachis tridens. Scale bar, 1 mm.

Habitus 11.Dorsal habitus of Pachybrachis othonus othonus. Scale bar, 1 mm.

Habitus 9a.Dorsal habitus of Pachybrachis nigricornis difficilis. Scale bar, 1 mrn.

Habitus 9b.Dorsal habitus of Pachybrachis nigricornis carbonarius. Almost black. Scale bar, 1 mm.

Habitus 7.Dorsal habitus of Pachybrachis luridus. Scale bar, 1 mm.

Habitus 15.Dorsal habitus of Pachybrachis subfasciatus. Scale bar, 1 mm.

Habitus 6.Dorsal habitus of Pachybrachis luctuosus. Scale bar, 1 mm.

Habitus 4.Dorsal habitus of Pachybrachis cephalicus. Scale bar, 1 mm.

Habitus 5.Dorsal habitus of Pachybrachis hepaticus hepaticus. Scale bar, 1 mm.

Habitus 17.Dorsal habitus of Pachybrachis trinotatus. Scale bar, 1 mm.

Figure 1.Eyes: a close eyes, Pachybrachis pectoralis b normal eyes, Pachybrachis peccans c normal eyes and yellow face, male Pachybrachis atomarius d remote eyes, Pachybrachis hepaticus.

Figure 2.Ocular lines: a present, Pachybrachis peccans b small, Pachybrachis hepaticus c absent, Pachybrachis spumarius.

Figure 3.Front femora: a not enlarged, Pachybrachis hepaticus b thickened, Pachybrachis peccans.

Habitus 3.Dorsal habitus of Pachybrachis calcaratus. Scale bar, 1 mm.

Figure 4.Claws: a, b front claws enlarged c, d normal.

Habitus 1.Dorsal habitus of Pachybrachis atomarius. Scale bar, 1mm.

Map 1.The known distribution of Pachybrachis atomarius in eastern Canada. Carolinian Zone in dark beige; EE – Eardley Escarpment.