Together we can make a difference and protect our trees in Fairfax County. JUNE Caterpillars have five pair of blue dots and six pair of red dots on their backs. They have many tufts of stiff hairs. Caterpillars are the stage that cause damage by feeding on leaves. JULY Stage at which caterpillars turn into moths.
Pupae are dark brown.
They are about the size of a quarter. Eggs typically hatch the following April. The female is white with brown wavy markings. She does not fly. Moths do not feed.