At the completion of the larval instars the insect usually descends to the soil or leaf litter where it constructs a small earthen chamber for a pupation site. The prepupal instar is nearly inactive and pupal instar is inactive. Both instars are nonfeeding stages. The prepupae and pupae resemble the adults and larvae in form, except that they possess wing pads. The wing pads of the pupae are longer than that of the prepupae.
Adults are pale yellow or whitish in color, but with numerous dark setae on the body.
A black line, resulting from the juncture of the wings, runs along the back of the body. The slender fringed wings are pale. The hairs or fringe on the anterior edge of the wing are considerably shorter that those on the posterior edge. They measure 0.8-1.0 mm in body length, with females averaging slightly larger than males. Unlike the larval stage, the adults tend to feed on young growth, and so are found on new leaves.