Harris's Diving Beetle vs Cabbage Stem Weevil
Side-by-side species comparison
| Attribute | Harris's Diving Beetle | Cabbage Stem Weevil |
|---|---|---|
| Scientific Name | Dytiscus harrisii | Ceutorhynchus pallidactylus |
| Order | Coleoptera | Coleoptera |
| Family | Dytiscidae | Curculionidae |
| Size | 33-40 mm | 2.5-3.5 mm |
| Habitat | Ponds & Lakes | Farmland |
| Diet | Omnivores | Herbivores |
| Regions | North America | Europe |
| Conservation | Least Concern | Least Concern |
Harris's Diving Beetle
A large North American diving beetle found in cold, clear lakes and bog ponds. It is one of the largest diving beetles on the continent.
Did You Know?
It can remain submerged for extended periods by trapping air under its elytra, which it uses like an external lung.
Cabbage Stem Weevil
A grey weevil that mines inside brassica stems. Larvae tunnel through stems causing weakening. One of several Ceutorhynchus species affecting oilseed rape.
Did You Know?
Larval tunneling weakens plant stems to the point where they may snap in windy conditions.