Douglas-fir Tussock Moth vs Balsam Woolly Adelgid
Side-by-side species comparison
| Attribute | Douglas-fir Tussock Moth | Balsam Woolly Adelgid |
|---|---|---|
| Scientific Name | Orgyia pseudotsugata | Adelges piceae |
| Order | Lepidoptera | Hemiptera |
| Family | Erebidae | Adelgidae |
| Size | 25-35 mm wingspan (males) | 0.5-1 mm |
| Habitat | Forests | Forests |
| Diet | Omnivores | Sap Feeders |
| Regions | North America | Europe, North America |
| Conservation | Not Evaluated | Not Evaluated |
Douglas-fir Tussock Moth
A defoliator of Douglas-fir and true firs in western North America. Outbreaks cause severe defoliation and tree mortality in dry inland forests.
Did You Know?
Females are flightless and lay their eggs directly on their cocoons.
Balsam Woolly Adelgid
An invasive European adelgid that kills fir trees in North America. Its feeding causes abnormal wood formation called rotholz.
Did You Know?
It nearly eliminated Fraser fir from the highest peaks of the southern Appalachian Mountains.