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The larvae are most active during the months of May and June. The individual larvae become pupae in late June on into July and remain in this stage for 1 to 2 weeks. Adults emerge in late June through the middle part of July and can persist into August.

The pests do not feed in the moth stage, but only mate and lay eggs. Upon entry into the state of California, a Gypsy Moth quarantine notice is issued by the California Department of Food and Agriculture border stations to new California residents relocating from Gypsy Moth infested areas.

Gypsy moth caterpillars feed on approximately 500 different plants. Older larvae will sometimes eat several species of hardwood that the younger larvae will avoid. However, when food is scarce, the larvae will feed on almost any vegetation.

If you notice tree defoliation on your property, holes in leaves, and egg masses on tree trunks and/or outdoor household items, you may have a gypsy moth infestation. What do gypsy moth egg masses look like? Gypsy moth egg masses have a fuzzy texture and are yellow in color. Please see images above.

Visit .YourMoveGypsyMothFree.com and click on the U.S. map to find out if you live in a quarantine area. If you do, you will need to inspect your household goods for gypsy moth if you're moving to a non-quarantine area. If you do not live in a quarantine area, this law does not apply to you.

Itchy Rash: The hairs on these caterpillars can cause an irritating and itchy rash if they come in contact with your skin. The rash looks similar to that caused by poison ivy and can sting. “Most of the time, the gypsy moth rash is a little red and itchy,” explained Rochester Regional Health dermatologist, Dr.

The most common treatment used against gypsy moth is a spray of Bacillus thuringiensis, commonly called Bt. This bacterial insecticide kills caterpillars that eat it within a week of its application. Bt is found naturally in soil and degrades within a week when exposed to sunlight.