Passalid Beetle vs Metallic Eumolpine Beetle
Side-by-side species comparison
| Attribute | Passalid Beetle | Metallic Eumolpine Beetle |
|---|---|---|
| Scientific Name | Pharochilus dilatatus | Chrysochus asclepiadeus |
| Order | Coleoptera | Coleoptera |
| Family | Passalidae | Chrysomelidae |
| Size | 25-35 mm | 8-10 mm |
| Habitat | Forests | Mountains |
| Diet | Wood Feeders | Herbivores |
| Regions | Australia | Southern and Central Europe |
| Conservation | Least Concern | Least Concern |
Passalid Beetle
A large, glossy black beetle that lives in family groups inside rotting logs. Adults and larvae communicate using squeaking sounds produced by rubbing body parts together.
Did You Know?
Parents chew wood into pulp to feed their young, making them one of few beetles with true parental care.
Metallic Eumolpine Beetle
A brilliant metallic dark blue to violet beetle closely related to the North American dogbane beetles. It is found on vincetoxicum and other Asclepiadaceae in the mountains of Europe.
Did You Know?
Like its North American relatives on milkweed, it sequesters toxic cardiac glycosides from its host plant to deter predators.