Pale Evening Dun vs Velvet Ameletid Mayfly
Side-by-side species comparison
| Attribute | Pale Evening Dun | Velvet Ameletid Mayfly |
|---|---|---|
| Scientific Name | Heptagenia adaequata | Ameletus velox |
| Order | Ephemeroptera | Ephemeroptera |
| Family | Heptageniidae | Ameletidae |
| Size | 8-12 mm | 9-13 mm |
| Habitat | Rivers & Streams | Rivers & Streams |
| Diet | Omnivores | Omnivores |
| Regions | Europe | North America |
| 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.
Velvet Ameletid Mayfly
A swift-swimming mayfly of headwater streams known for its velvety-textured nymphal cuticle. Adults emerge in early summer.
Did You Know?
The species name velox means swift, referring to the remarkable swimming speed of the nymphs.