Scientists warn that the invasive spongy moth, Lymantria dispar, poses a significant threat to West Coast forests. The moth, already causing damage in the Northeast, is spreading due to rising ...

Spongy moth caterpillars are wreaking havoc in wooded lots and forests across Pennsylvania. But the good news is populations appear to be dwindling. It’s the caterpillar stage of the spongy ...

Spongy moth egg mass surveys are the best way to determine the need for treatment. Female moths lay light tan egg masses — each containing 100 to 1,500 eggs — on trees, rocks, and other ...

A gypsy moth caterpillar crawls along partially eaten leaves of a tree in Trenton, N.J. The spongy moth caterpillar has a yellow and black head, a hairy body with pairs of blue spots, followed by ...

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 ...