Knobbled Weevil vs Toadflax Stem Weevil
Side-by-side species comparison
| Attribute | Knobbled Weevil | Toadflax Stem Weevil |
|---|---|---|
| Scientific Name | Karocolens pittospori | Mecinus janthinus |
| Order | Coleoptera | Coleoptera |
| Family | Curculionidae | Curculionidae |
| Size | 15-22 mm | 3-4 mm |
| Habitat | Forests | Grasslands |
| Diet | Wood Feeders | Herbivores |
| Regions | Oceania (New Zealand) | Europe |
| Conservation | Least Concern | Least Concern |
Knobbled Weevil
A large, knobbled weevil endemic to New Zealand, covered in rough tubercles that give it a bark-like appearance. It is nocturnal and flightless, found in native forests. Its rough texture provides excellent camouflage against tree bark.
Did You Know?
When disturbed, the knobbled weevil plays dead and drops to the ground, where its bark-like texture makes it nearly invisible among leaf litter.
Toadflax Stem Weevil
A dark metallic blue-purple weevil that feeds on toadflax species. Successfully used as a biological control agent for invasive Dalmatian toadflax in North America.
Did You Know?
Released in North America as biological control, where it has successfully suppressed invasive Dalmatian toadflax.