Maize Weevil vs Knapweed Gall Weevil
Side-by-side species comparison
| Attribute | Maize Weevil | Knapweed Gall Weevil |
|---|---|---|
| Scientific Name | Sitophilus zeamais | Bangasternus fausti |
| Order | Coleoptera | Coleoptera |
| Family | Curculionidae | Curculionidae |
| Size | 2-4mm | 4-6 mm |
| Habitat | Indoors | Grasslands |
| Diet | Seed Feeders | Gall Makers |
| Regions | Africa, Asia, North America, South America, Europe, Oceania | Europe, Central Asia |
| Conservation | Least Concern | Least Concern |
Maize Weevil
A small dark brown weevil with four reddish spots on its elytra. It is one of the most destructive stored grain pests worldwide.
Did You Know?
A single female can lay over 400 eggs in grain kernels and infestations can destroy entire harvests in storage.
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.