Overview
- Canadian Food Inspection Agency officials confirmed the first Canadian detection in Windsor on Sept. 15 and put movement restrictions and local surveys in place.
- Local outbreaks are growing in parts of the U.S., with large numbers reported in Cincinnati and ongoing high counts in Massachusetts prompting intensified public guidance.
- The insects are most active in September and October when adults mate and lay eggs that persist through winter, making this the key window to stop next year’s hatch.
- Authorities and experts are urging people to kill or capture adults, scrape egg masses into soapy water or rubbing alcohol, check vehicles and outdoor gear before travel, and report sightings to CFIA or state agencies.
- The pest feeds on more than 100 plant species and favors the invasive tree‑of‑heaven; it can damage grapevines and stress orchards, and management often requires coordinated surveys, treated removal of host trees, and targeted resources across jurisdictions.