Pale Evening Dun vs Nebria Streamside Beetle
Side-by-side species comparison
| Attribute | Pale Evening Dun | Nebria Streamside Beetle |
|---|---|---|
| Scientific Name | Heptagenia adaequata | Nebria brevicollis |
| Order | Ephemeroptera | Coleoptera |
| Family | Heptageniidae | Carabidae |
| Size | 8-12 mm | 10-14 mm |
| Habitat | Rivers & Streams | Rivers & Streams |
| Diet | Omnivores | Omnivores |
| Regions | Europe | Europe, Introduced to North America and New Zealand |
| Conservation | Least Concern | Least Concern |
Pale Evening Dun
A flat-bodied mayfly whose nymphs press tightly against rocks in swift currents. Adults emerge at dusk during summer months.
Did You Know?
Its extremely flattened body allows it to resist currents that would sweep away most other insects.
Nebria Streamside Beetle
A very common European ground beetle often found near streams and in damp habitats. It is active year-round including during mild winter nights.
Did You Know?
It is one of very few ground beetles that breeds in autumn and is active throughout the winter months.