Parasitic Wood Wasp vs Hazel Sawfly
Side-by-side species comparison
| Attribute | Parasitic Wood Wasp | Hazel Sawfly |
|---|---|---|
| Scientific Name | Orussus abietinus | Croesus septentrionalis |
| Order | Hymenoptera | Hymenoptera |
| Family | Orussidae | Tenthredinidae |
| Size | 8-14 mm | 8-10 mm |
| Habitat | Woodlands | Heathland |
| Diet | Parasitoids | Herbivores |
| Regions | Europe, Western Asia | Europe, Western Asia |
| Conservation | Least Concern | Least Concern |
Parasitic Wood Wasp
A small, dark-bodied wasp-like insect with a flattened head and short antennae inserted below the eyes. It is among the most primitive parasitoid Hymenoptera.
Did You Know?
Orussidae are considered the evolutionary link between sawflies and parasitoid wasps, making them key to understanding Hymenoptera evolution.
Hazel Sawfly
A medium-sized sawfly with an orange abdomen and dark thorax. The bluish-green larvae with black heads feed gregariously on hazel, birch, and alder.
Did You Know?
When disturbed, the gregarious larvae raise their tails simultaneously in an S-shape, creating an intimidating group display to deter predators.