The invasive spotted lanternfly continues to make its way closer to Wisconsin each year. The insect is now becoming established in the Chicago area, according to the state Department of Agriculture, Trade and Consumer Protection.
Public reporting tools have shown an influx of SLF reports in nearby states in 2025, such as Illinois, Indiana, and Ohio. With SLF not yet in Wisconsin, DATCP encourages people within the state to report sightings directly to the SLF Hotline to help the agency quickly respond to all reports.
Hotline link: https://survey123.arcgis.com/share/60711c6caf8d4004835a244021785df9
With SLF numbers growing in nearby states, DATCP is prioritizing surveys in Wisconsin’s southeast region to detect possible introductions. Surveys are focused on areas with high out-of-state traffic, such as malls, roadways, train stations, and rest stops. SLF is a notorious hitchhiker, able to move on vehicles, plants, firewood, and outdoor furniture. Surveys also look for areas with host plants of SLF, including tree-of-heaven, grape, walnut, and maple.
DATCP placed a billboard in Milwaukee in August to encourage people to report sightings of the spotted lanternfly. The billboard was placed along I-94 to reach as many commuters and out-of-state travelers as possible.
DATCP staff has also been hanging wanted fliers for the spotted lanternfly at rest stops, campgrounds, and public parks.
