European Spruce Longhorn Beetle vs Black Headed Birch Sawfly
Side-by-side species comparison
| Attribute | European Spruce Longhorn Beetle | Black Headed Birch Sawfly |
|---|---|---|
| Scientific Name | Tetropium castaneum | Craesus alniastri |
| Order | Coleoptera | Hymenoptera |
| Family | Cerambycidae | Tenthredinidae |
| Size | 8–18 mm | 7-9 mm |
| Habitat | Woodlands | Woodlands |
| Diet | Wood Feeders | Herbivores |
| Regions | Europe, Northern Asia | Europe |
| Conservation | Not Evaluated | Least Concern |
European Spruce Longhorn Beetle
A longhorn beetle native to Europe that bores into spruce trunks. It typically colonizes weakened or recently felled spruce trees.
Did You Know?
It became a regulated quarantine pest after being found attacking healthy spruce in Nova Scotia, Canada.
Black Headed Birch Sawfly
A medium-sized sawfly with a dark head and orange body. Larvae are greenish-blue with black heads and feed communally on birch and alder leaves.
Did You Know?
When a predator approaches, the entire colony of larvae simultaneously rears up and thrashes, making the group appear larger and more threatening.