Ragweed Leaf Beetle vs Speyer's Cave Beetle
Side-by-side species comparison
| Attribute | Ragweed Leaf Beetle | Speyer's Cave Beetle |
|---|---|---|
| Scientific Name | Zygogramma suturalis | Aphaobius milleri |
| Order | Coleoptera | Coleoptera |
| Family | Chrysomelidae | Leiodidae |
| Size | 6-8 mm | 3-5 mm |
| Habitat | Grasslands | Caves |
| Diet | Herbivores | Detritivores |
| Regions | North America (native), introduced to Russia, China, Europe | Austria, Slovenia |
| Conservation | Least Concern | Least Concern |
Ragweed Leaf Beetle
A brown beetle with dark longitudinal stripes on the elytra, introduced to several countries as a biocontrol agent against common ragweed. Both adults and larvae feed on ragweed foliage.
Did You Know?
It was introduced from North America to the former Soviet Union in the 1970s as biological control against ragweed, a major hay fever allergen source.
Speyer's Cave Beetle
A troglobitic beetle endemic to caves in the eastern Alps. It has a convex body shape and completely lacks eyes.
Did You Know?
It can tolerate near-freezing temperatures in high-altitude caves.