Cylindrical Bark Hister vs Japanese Giant Ichneumon
Side-by-side species comparison
| Attribute | Cylindrical Bark Hister | Japanese Giant Ichneumon |
|---|---|---|
| Scientific Name | Teretrius fabricii | Megarhyssa praecellens |
| Order | Coleoptera | Hymenoptera |
| Family | Histeridae | Ichneumonidae |
| Size | 2-3 mm | 30-45 mm body, ovipositor up to 80 mm |
| Habitat | Woodlands | Forests |
| Diet | Wood Feeders | Wood Feeders |
| Regions | Europe, North America (introduced) | Japan, Eastern Asia |
| Conservation | Least Concern | Least Concern |
Cylindrical Bark Hister
A tiny, cylindrical hister beetle that lives under bark of dead trees. Its elongated shape allows it to follow bark beetle tunnels.
Did You Know?
It was intentionally introduced to North America from Europe to help control the smaller European elm bark beetle.
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.