Asian gypsy moth

Asian gypsy moth (Lymantria dispar dispar) can completely defoliate large sections of forests which can leave trees stressed and susceptible to disease. With a flight distance of 25 miles and a host range that is in the hundreds, Asian gypsy moths pose a great threat to North American forests and landscapes.

Unfortunately, the Asian gypsy moth looks very similar to other native insects and is extremely difficult to tell apart from other moths once it has reached adulthood. Females will lay egg masses which overwinter and hatch into fuzzy blue caterpillars with orange spots. These will feed for six to eight weeks and then pupate for another two weeks. Afterwards, the adult moth emerges and continues the cycle.

The USDA is working in partnership with Canada, China, Japan, Russia, and South Korea to help prevent and stop the spread of the insect.

Adult Asian gypsy moth next to brown, fuzzy egg mass Asian gypsy moth caterpillar is blue with blue and orange spots

If you think you have found an Asian gypsy moth or an infested tree, please contact DPI at or 864-646-2140.

Publications Related Links