This is the time of year to monitor your trees and scrape off European gypsy moth egg masses.

The Invasive Species Centre and Eastern Ontario Model Forest are holding a contest with a goal of getting residents of Ontario out monitoring their properties and removing these egg masses!

We’re calling on citizen scientists across Ontario to help us limit the spread of European gypsy moth, one egg mass at a time!


What is the European Gypsy Moth?

The European gypsy moth is native to Europe and is currently established in northeastern United States and eastern Canada. This insect is a significant threat to Ontario trees, and has gained widespread attention over the past year for the heavy defoliation seen across the province. The caterpillars feed on crown foliage of a wide range of hardwood and some softwood trees, which makes it a defoliating forest pest of concern.

Hosts trees include oak, birch, aspen, sugar maple, American beech, and softwoods including eastern white pine, and Colorado blur spruce (Gypsy moth, Ontario.ca). 

The insect lays its eggs on the trunks and branches of most trees in masses of 100-1000 eggs during the months of June to the following spring, so now is the time to start scraping!

By removing the eggs this year, we can help limit infestations in forthcoming years, and help protect our forests from defoliation!

Always wear gloves and protective glasses when scraping egg masses from the tree.

Please limit number of contest entries to 2 or less per person.


Contest Rules

By entering using the contest submission form you acknowledge you have read and reviewed the contest rules

Contest is only open to residents of Ontario, Canada. Two (2) winners will be randomly selected, one per draw.

Early Bird Draw: October 30, 2020 @ 4pm EST

Final Draw: November 27, 2020 @ 4pm EST

To learn more about European gypsy moth, check out our species profile and resources page.