Spongy moth egg mass surveys help determine which areas require treatment. Female moths lay tan egg masses in easily ...

The caterpillar, along with most others in the Saturniidae family, spins a silk cocoon. This is where it then spends its time as a pupa, the stage of development before the moth becomes an adult.

Pennsylvania’s Department of Conservation and Natural Resources wants forest owners to help fight spongy moths — formerly known as gypsy moths. Spongy moths pose a serious threat to oaks ...

Adult atlas moths may be massive, but they do not feed at all after they have emerged from the cocoon. The proboscis, which other butterflies and moths use to drink nectar, is tiny and does not work.

This year, DCNR plans to treat approximately 75,000 acres, primarily in northeastern and central Pennsylvania, and PGC plans to treat about 38,000 acres. The aggressive spongy moth treatment ...