Western Spruce Budworm vs Black Arches
Side-by-side species comparison
| Attribute | Western Spruce Budworm | Black Arches |
|---|---|---|
| Scientific Name | Choristoneura occidentalis | Lymantria monacha |
| Order | Lepidoptera | Lepidoptera |
| Family | Tortricidae | Erebidae |
| Size | 22-28 mm wingspan | 40-55 mm wingspan |
| Habitat | Mountains | Forests |
| Diet | Omnivores | Omnivores |
| Regions | North America | Europe, temperate Asia, Japan |
| Conservation | Not Evaluated | Least Concern |
Western Spruce Budworm
A major defoliator of Douglas-fir and true firs in western North America. Repeated defoliation leads to growth loss and tree mortality.
Did You Know?
Fire suppression has increased susceptibility of western forests to budworm outbreaks.
Black Arches
A striking moth with white wings boldly marked with black zigzag lines and a pink-flushed abdomen. It can occasionally erupt in huge outbreaks that defoliate conifer forests.
Did You Know?
During outbreaks in central Europe, caterpillar frass falling from trees sounds like rainfall.