Flat-headed Mayfly vs Spotted Willow Leaf Beetle
Side-by-side species comparison
| Attribute | Flat-headed Mayfly | Spotted Willow Leaf Beetle |
|---|---|---|
| Scientific Name | Epeorus assimilis | Chrysomela knabi |
| Order | Ephemeroptera | Coleoptera |
| Family | Heptageniidae | Chrysomelidae |
| Size | 10-14 mm | 6-8 mm |
| Habitat | Rivers & Streams | Mountains |
| Diet | Herbivores | Herbivores |
| Regions | Europe | Western North America |
| Conservation | Least Concern | Least Concern |
Flat-headed Mayfly
A stream-dwelling mayfly nymph with a flattened body for clinging to rocks in rapids.
Did You Know?
Its flattened nymph shape allows it to live in the boundary layer of fast currents.
Spotted Willow Leaf Beetle
A dark metallic blue-black beetle with an oval body found on willows in western North America. Adults and larvae feed on willow foliage near mountain streams.
Did You Know?
This species is adapted to high-altitude habitats and is commonly found above 2,000 meters elevation in the Rocky Mountains.