Not much is known about the biology of this species because there have been so few opportunites to study it. Adult females lay their eggs on evening primrose plants, Camissonia sp. The eggs hatch shortly thereafter and the larvae feed for several weeks, and enter the ground to pupate. The following spring, the adults emerge from the ground and begin to nectar and mate. The adults are active during the day.
Most moths are primarily nocturnal.
An insidious introduced plant is probably partly responsible for this species decline. Adult females will often lay their eggs on this plant as well. Unfortunately the newly hatched larvae cannot develop on this plant and shortly die. We're keeping our fingers crossed.