Douglas-fir Beetle vs Japanese Giant Ichneumon
Side-by-side species comparison
| Attribute | Douglas-fir Beetle | Japanese Giant Ichneumon |
|---|---|---|
| Scientific Name | Dendroctonus pseudotsugae | Megarhyssa praecellens |
| Order | Coleoptera | Hymenoptera |
| Family | Curculionidae | Ichneumonidae |
| Size | 4-6 mm | 30-45 mm body, ovipositor up to 80 mm |
| Habitat | Mountains | Forests |
| Diet | Wood Feeders | Wood Feeders |
| Regions | Western North America from British Columbia to Mexico | Japan, Eastern Asia |
| Conservation | Least Concern | Least Concern |
Douglas-fir Beetle
A dark reddish-brown bark beetle that attacks Douglas-fir trees, particularly those weakened by drought or windthrow. It is among the most damaging bark beetles in the Pacific Northwest.
Did You Know?
It preferentially attacks fallen or stressed trees, but during outbreaks it can kill large numbers of healthy standing trees.
Japanese Giant Ichneumon
One of the largest ichneumon wasps in Asia with a remarkably long ovipositor. It parasitizes wood-boring horntail larvae in Japanese forests.
Did You Know?
Japanese naturalists have studied this species since the Edo period, and it appears in historical entomological scrolls.