Blue Horntail vs Two-Horned Oxysternon
Side-by-side species comparison
| Attribute | Blue Horntail | Two-Horned Oxysternon |
|---|---|---|
| Scientific Name | Sirex juvencus | Oxysternon durum |
| Order | Hymenoptera | Coleoptera |
| Family | Siricidae | Scarabaeidae |
| Size | 12–30 mm | 20-28 mm |
| Habitat | Forests | Forests |
| Diet | Wood Feeders | Dung Feeders |
| Regions | Europe, North America, Asia | South America |
| Conservation | Not Evaluated | Least Concern |
Blue Horntail
A metallic blue-black horntail wasp found across the Northern Hemisphere. It breeds in recently dead or dying spruce and fir trees.
Did You Know?
Adults sometimes emerge from milled lumber years later, boring clean round exit holes through flooring or walls.
Two-Horned Oxysternon
A large, dark metallic green tunneling dung beetle with two prominent pronotal projections in males. The clypeus has a distinctive upturned anterior margin. It is a powerful tunneler in Amazonian rainforests.
Did You Know?
This beetle is so efficient at burying dung that it plays a measurable role in reducing livestock parasite transmission.