Caterpillars pupate and overwinter in underground chambers.
One brood from June-August. Nevada and southern California east through Utah, Arizona, Colorado, and New Mexico to Oklahoma and Texas. G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery. The moths of America north of Mexico, fasc. E. W. Classey Limited and R. B. D. Publications Inc., Middlesex, England.