Dusky Birch Sawfly vs Large-legged Chalcid
Side-by-side species comparison
| Attribute | Dusky Birch Sawfly | Large-legged Chalcid |
|---|---|---|
| Scientific Name | Croesus latitarsus | Chalcis myrifex |
| Order | Hymenoptera | Hymenoptera |
| Family | Tenthredinidae | Chalcididae |
| Size | 8-10 mm | 4-7 mm |
| Habitat | Woodlands | Heathland |
| Diet | Herbivores | Parasitoids |
| Regions | North America | North America |
| Conservation | Least Concern | Not Evaluated |
Dusky Birch Sawfly
A medium-sized sawfly with an orange abdomen and black head and thorax. Larvae are yellowish-green with dark spots and feed in rows along the edges of birch leaves.
Did You Know?
The larvae feed in a distinctive edge-to-edge pattern, consuming the leaf blade while leaving the midrib intact like a fishbone.
Large-legged Chalcid
A parasitoid wasp with conspicuously thickened hind femora used to brace itself while ovipositing. It attacks the pupae of tachinid flies and various Lepidoptera.
Did You Know?
Despite looking like it could jump powerfully, those thick hind legs are mainly used for gripping, not leaping.