Ptilodontinae

Ptilodontinae is a subfamily of moths belonging to the family Notodontidae. These moths are characterized by their generally medium to large size, with wingspans that can range from 30 to 60 millimeters depending on the species. A distinctive feature of many ptilodontine moths is the presence of "tufts" or "pectinations" on their antennae, particularly in males, which are used to detect pheromones from females.

The coloration of Ptilodontinae moths varies widely, but many exhibit cryptic patterns of brown, gray, or mottled hues, aiding in camouflage against bark or foliage during the day. The larvae, or caterpillars, of these moths are also diverse. Some are smooth, while others possess spines, humps, or other elaborate structures. Their diets typically consist of leaves from various trees and shrubs.

The distribution of Ptilodontinae is primarily Holarctic, with species found across North America, Europe, and Asia. They inhabit a range of environments, including forests, woodlands, and shrublands. Adults are generally nocturnal, feeding on nectar from flowers or, in some cases, not feeding at all and relying on stored reserves from their larval stage. The subfamily includes several genera, such as Ptilodon, Harpyia, and Furcula, each containing numerous species with specific ecological niches and geographic ranges. Their life cycles involve complete metamorphosis, with egg, larval, pupal, and adult stages.