Northern Prairie Wildlife Research Center
Wingspan 6.1 cm. Forewing is red-brown, falcate, the margin not scalloped; hindwing is yellow with a round black anal spot having a solid blue pupil. This sphingid is widely distributed in western North America east of the Cascades. Moths fly in late spring and early summer. Caterpillars feed on the foliage of cherry (Prunus) and serviceberry (Amelanchier alnifolia).
Similar species: Paonias excaecatus is larger, forewing with a scalloped margin, hindwing rose-red; species of Smerinthus hindwing with a blue ring on the black anal spot.