description Winter moth Overview
The winter moth (Operophtera brumata) is a geometer moth native to Europe and western Asia. Males fly on cold nights in late autumn and early winter, while females have vestigial wings and cannot fly, climbing surfaces and releasing pheromones to attract mates. Larvae hatch in early spring and feed on the buds and leaves of oaks, maples, apples, and other broadleaf trees. Introduced to North America, it has become an invasive defoliator in the northeastern United States and Canada, where the parasitic tachinid fly Cyzenis albicans has been released as biological control.
help Winter moth FAQ
When do winter moth males fly?
Male winter moths fly on cold nights in late autumn and early winter. This unusual flight period helps distinguish them from many moths active in warmer seasons.
Can female winter moths fly?
Female winter moths have vestigial wings and cannot fly. They climb surfaces and release pheromones to attract flying males.
Where is the winter moth native?
Operophtera brumata is native to Europe and western Asia. The species has also become important in regions where its larvae feed on trees and shrubs.
What happens after winter moth eggs hatch?
The larvae hatch in early spring and begin feeding on fresh foliage. Their timing can bring them into contact with newly opening leaves on host plants.
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