Cabbage Stem Flea Beetle vs Knotgrass Leaf Beetle
Side-by-side species comparison
| Attribute | Cabbage Stem Flea Beetle | Knotgrass Leaf Beetle |
|---|---|---|
| Scientific Name | Psylliodes chrysocephala | Chrysolina hyperici |
| Order | Coleoptera | Coleoptera |
| Family | Chrysomelidae | Chrysomelidae |
| Size | 3-4.5 mm | 5-7 mm |
| Habitat | Farmland | Grasslands |
| Diet | Leaf Miners | Herbivores |
| Regions | Europe | Europe (native), introduced to Australia and North America |
| Conservation | Least Concern | Least Concern |
Cabbage Stem Flea Beetle
A dark metallic flea beetle that is a major pest of oilseed rape across Europe. Larvae mine inside plant stems during winter. Has developed resistance to neonicotinoid insecticides in some areas.
Did You Know?
Became an even more serious pest after the EU ban on neonicotinoid seed treatments in 2018.
Knotgrass Leaf Beetle
A rounded, metallic bronze to coppery-green beetle that was introduced to control St. John's wort. It has a smooth, convex body with fine punctation across the elytra.
Did You Know?
Introduced to Australia in the 1930s, it was one of the earliest successful biological control agents used against a weed in that country.