Underside hindwing is yellow-green with jagged white postmedian line forming a W near tails.
Caterpillars eat their way into the thick leaves.
Many flights from April-December. Guatemala north to southeastern Arizona and central Texas. Colonies in United States are small and local. South Texas population is extirpated. G4 - Apparently secure globally, though it might be quite rare in parts of its range, especially at the periphery.