California's State Insect, but seen by very few people in the wild. It is largely restricted to riparian habitat in the Sacramento Valley (now much restricted) and in the Coast Range and Sierran foothills. Its only known host plant, False Indigo (Amorpha), is a rather inconspicuous shrub found with Poison Oak, Willow, etc. near streambanks, often along boulder-strewn tributary streams in side canyons where access is very difficult.