Gypsy Moth (Lymantria dispar) on Your Property

The Entomological Society of America (ESA) has discontinued gypsy moth as the common name for Lymantria dispar and is in the process of determining a new common name for this species. Thank you for your patience and understanding as we transition through the name change process.​​​​​​

Private property owners may have a number of concerns related to gypsy moth. Here is how you can address the primary ones:

If you believe you have found, or have confirmed, gypsy moth on your property

If you live in a non-quarantined county, call (608) 642-MOTH or email Please provide a name, phone number, and address of your property including township, village or city.

​If you live in a quarantined county, you can learn more about managing gypsy moth on yard trees and in your woodlot at​.

If you are moving from a quarantined county to a non-quarantined area in or out of Wisconsin

You will need to certify that your outdoor items are free of gypsy moth. Get details.

If gypsy moth trappers or surveyors enter your property

We will try to contact you to ask permission, but if we cannot reach you, our trappers and surveyors may enter your property and leave information for you with contact information. Learn more about trapping and surveying.


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