The full grown caterpillars are light green with faint white stripes running the length of their bodies. Their true legs are often black. The larval period lasts for about 3 weeks depending on food quality and temperature. The mature larvae spin a thin, white, silken cocoon and pupate within. Cocoons may be attached to objects in the soil, but they are more often on the underside of the leaf or within folded edges of the leaf.
Pupae are pale green with a broad brown stripe down the back.
Prior to adult emergence the pupae turn brown. Duration of pupal stage is 8 to 11 days. Forewings are characterized by purplish brown or bronzish reflections and two defined silvery white marks near the center. Hindwings are yellow gray, darkening towards the edges. Both sexes have a hairy tuft, or brush projecting backward on the tip of the abdomen.