Citheronia regalis

Description

Citheronia regalis, the regal moth or royal walnut moth, is a North American moth in the family Saturniidae. The caterpillars are called hickory horned devils. The adult (imago) has a wingspan of 3.75-6.1 in (9.5-15.5 cm). The species was first described by Johan Christian Fabricius in 1793.