Definite Tussock Moth (Orgyia definita).
The Definite Tussock Moth is a moth of the family Erebidae found from Minnesota to New Brunswick and south to South Carolina, Mississippi, and Louisiana.
Total Length 15-17mm. Grayish brown FW of male has sharply defined AM and PM lines, often edged with wide brown bands. Outer ST line is marked with a row of black dashes. Inner ST line has a bold white crescent. Female (not shown) is wingless.
Hosts: Deciduous trees, including basswood, birch, oak, and maple.
Note: Two broods.