The sheep moth, or common sheep moth (Hemileuca eglanterina), is a member of the Saturniidae family of silk moths and is native to California west of the Sierran crest and the mountains of Southern California ranging near to the coast. The moth is dayflying and appears in summer. It feeds on plants of three genera: Ceanothus, Rhamnus (including coffeeberry), and Rosa. Nuttall's sheep moth and one other species are similar, occurring in sagebrush areas east of the Sierra Nevada.