Plume moths are instantly recognizable by their T-shaped silhouette and muted shades of tan and brown. At rest, the moths hold their wings tightly rolled, but when they are spread, the deeply cleft slits in the wing margins that create the feathery plumes are visible. These moths are slim and delicate-looking, with a long, thin abdomen and extremely long, fragile legs. Their flight is weak and fluttery. It can be hard to distinguish among the many species of plume moths.
Caterpillars are variously colored and are commonly equipped with long, fine hairs or bristles.