Phaeochlaena gyon is a species of Prominent Moths in the Family Notodontidae. Moths of this genus often display vibrant or contrasting coloration on their wings, a common trait in Dioptinae, which are known for their diurnal activity and visual signaling. Forewings may have distinct patterns that contribute to their identification and serve as camouflage or warning coloration. Hindwings are typically more subdued but can sometimes have vivid colors used for flash displays against predators.