Clover Root Weevil vs Northern Corn Rootworm
Side-by-side species comparison
| Attribute | Clover Root Weevil | Northern Corn Rootworm |
|---|---|---|
| Scientific Name | Sitona obsoletus | Diabrotica barberi |
| Order | Coleoptera | Coleoptera |
| Family | Curculionidae | Chrysomelidae |
| Size | 3-5 mm | 4-6 mm |
| Habitat | Grasslands | Farmland |
| Diet | Root Feeders | Root Feeders |
| Regions | Europe, New Zealand (invasive) | North America |
| Conservation | Least Concern | Not Evaluated |
Clover Root Weevil
A small, grey-brown weevil that feeds on clover roots and nitrogen-fixing nodules. It became a major invasive pest in New Zealand pastures.
Did You Know?
By destroying nitrogen-fixing root nodules, it reduces pasture fertility, costing New Zealand agriculture hundreds of millions of dollars annually.
Northern Corn Rootworm
A pale green beetle whose larvae attack corn root systems. It can survive crop rotation by extending egg diapause for two years.
Did You Know?
Its eggs can remain dormant in soil for over two years, defeating traditional crop rotation strategies.