About Orgyia definita Packard, 1864
Orgyia definita, commonly known as the definite tussock moth or definite-marked tussock moth, is a moth species belonging to the family Erebidae. This species was first described by Alpheus Spring Packard. Its scientific name bears the authority citation Packard, 1864, and the original description was published in 1865. It is distributed in eastern North America, ranging from Minnesota and New Brunswick in the north, southward to South Carolina, Mississippi, and Louisiana. Males of this species have a wingspan of approximately 30 mm, while females are wingless. The larvae of Orgyia definita feed on the following plant species: Salix, Quercus, Tilia, Ulmus, Betula, Acer rubrum, and Hamamelis virginiana.
