Gray Hairstreak vs Knapweed Gall Weevil
Side-by-side species comparison
| Attribute | Gray Hairstreak | Knapweed Gall Weevil |
|---|---|---|
| Scientific Name | Strymon melinus | Bangasternus fausti |
| Order | Lepidoptera | Coleoptera |
| Family | Lycaenidae | Curculionidae |
| Size | 22-35 mm wingspan | 4-6 mm |
| Habitat | Grasslands | Grasslands |
| Diet | Fruit Feeders | Gall Makers |
| Regions | Throughout the United States, southern Canada, and into Central America | Europe, Central Asia |
| Conservation | Least Concern | Least Concern |
Gray Hairstreak
One of the most widespread hairstreaks in North America with slate-gray wings and a bright orange spot near its tail. It uses a remarkably wide range of host plants.
Did You Know?
Its caterpillars feed on plants from over 20 different families, making it one of the most generalist butterfly larvae in North America.
Knapweed Gall Weevil
A weevil that induces galls in knapweed flower heads. Larvae develop inside the enlarged flower buds. Used in biological control of invasive knapweeds in North America.
Did You Know?
Released in North America as biocontrol for invasive spotted knapweed, which costs ranchers millions annually.