Spider-hunting Wasp vs Black Headed Birch Sawfly
Side-by-side species comparison
| Attribute | Spider-hunting Wasp | Black Headed Birch Sawfly |
|---|---|---|
| Scientific Name | Anoplius nigerrimus | Craesus alniastri |
| Order | Hymenoptera | Hymenoptera |
| Family | Pompilidae | Tenthredinidae |
| Size | 12-18mm | 7-9 mm |
| Habitat | Beaches & Coastal | Woodlands |
| Diet | Predators | Herbivores |
| Regions | Europe | Europe |
| Conservation | Least Concern | Least Concern |
Spider-hunting Wasp
A large all-black spider-hunting wasp that drags paralyzed wolf spiders back to its burrow.
Did You Know?
Paralyzes a wolf spider with a precise sting to the nerve ganglion then drags it backwards to its burrow.
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.