Dusky Birch Sawfly vs White Underwing
Side-by-side species comparison
| Attribute | Dusky Birch Sawfly | White Underwing |
|---|---|---|
| Scientific Name | Croesus latitarsus | Catocala relicta |
| Order | Hymenoptera | Lepidoptera |
| Family | Tenthredinidae | Erebidae |
| Size | 8-10 mm | 70-85 mm wingspan |
| Habitat | Woodlands | Woodlands |
| Diet | Herbivores | Sap Feeders |
| Regions | North America | Northern United States and southern Canada |
| Conservation | Least Concern | Least Concern |
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.
White Underwing
A striking underwing moth with white and black banded forewings that mimics birch bark. Its hindwings are black with broad white bands.
Did You Know?
It is one of the only underwing moths with white rather than colored hindwings, matching the white bark of its birch tree hosts.