Northern Prairie Wildlife Research Center
Wingspan 3.4 cm. Forewing is pale gray or brown with fine wavy black lines. This geometrid is widely distributed in forests of western North America. Moths fly in early summer. Caterpillars feed on foliage of buckbrush (Ceanothus cuneatus) and deerbrush (Ceanothus integerrimus).
Similar species: numerous species exhibit similar shades of gray, brown, and white colors with fine wavy black lines, such as Aethaloida packardaria, and Iridopsis emasculata, however, A. pampinaria is distinguished by its relatively small size and pale gray color.