Please do not be concerned about destroying egg masses before Gypsy Moth Program staff complete their own County-wide field survey. Staff are trained to recognize areas of infestation even after you have destroyed all egg masses you are able to reach on your property. 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.