Black-Headed Blister Beetle vs South American Giant Diving Beetle
Side-by-side species comparison
| Attribute | Black-Headed Blister Beetle | South American Giant Diving Beetle |
|---|---|---|
| Scientific Name | Epicauta pennsylvanica | Megadytes ducalis |
| Order | Coleoptera | Coleoptera |
| Family | Meloidae | Dytiscidae |
| Size | 10-18 mm | 35-45 mm |
| Habitat | Grasslands | Rivers & Streams |
| Diet | Parasitoids | Omnivores |
| Regions | North America | Brazil, Amazon Basin |
| Conservation | Least Concern | Least Concern |
Black-Headed Blister Beetle
An entirely black blister beetle common across eastern North America, often seen in large groups on goldenrod in autumn. Its larvae are parasitoids of grasshopper eggs.
Did You Know?
Larvae go through hypermetamorphosis, changing dramatically in form across five different larval stages.
South American Giant Diving Beetle
One of the largest diving beetles in South America with a glossy dark olive body. It inhabits large rivers and lakes of the Amazon basin.
Did You Know?
It is among the largest dytiscid beetles in the Western Hemisphere.