Pest Information for Wisconsin

Last Modified: July 30, 2025

Hawaii (includes America Samoa, Commonwealth of the Northern Mariana Islands, and Guam)

Active Federal Quarantines

The following pests have Federal quarantines in certain areas of this State. Other Federal and State quarantines may apply. Learn about State-level quarantines.

There are no Federal quarantines right now.

Attacks: trees and shrubs

Dark-colored, hairy caterpillar with five pairs of blue dots followed by six pairs of red dots lining its back crawling on a partially eaten leaf.

Watch Out For These Pests

This state has some crop, forest, or urban area(s) where the following pests or diseases could survive year-round.

Attacks: hardwood trees, national forests

Balanced on an index finger the Asian longhorned beetle's face is dwarfed by its long black and white banded antenna. The distinct bluish color on the ALB's legs and feet—a sign of a newly emerged adult.

Attacks: North American tree and shrub species

White female moth with light brown lines on its wings next to brown male moth with dark brown lines on its wings.

Report a Pest

Have you recently encountered the listed pests or any invasive species?

If so, contact the State Plant Health Director below:

Wisconsin State Plant Health Director

Christopher Deegan

Email: christopher.deegan@usda.gov

Phone: 608-286-3608

Mailing Address:

1 Gifford Pinchot Dr.

Room 229

Madison, WI 53726

Office Manager:
Bailey Biegler: (608) 286-3604
Email: Bailey.Biegler@usda.gov

Associate Executive Director:
Clint Burfitt: (503) 307-3299