Pale Evening Dun vs Nebrioporus Water Beetle
Side-by-side species comparison
| Attribute | Pale Evening Dun | Nebrioporus Water Beetle |
|---|---|---|
| Scientific Name | Heptagenia adaequata | Nebrioporus nipponicus |
| Order | Ephemeroptera | Coleoptera |
| Family | Heptageniidae | Dytiscidae |
| Size | 8-12 mm | 5-7 mm |
| Habitat | Rivers & Streams | Mountains |
| Diet | Omnivores | Omnivores |
| Regions | Europe | East Asia, Japan |
| 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.
Nebrioporus Water Beetle
A small diving beetle endemic to Japan found in clean mountain streams. Part of a genus that prefers running water over still pools. An indicator species for unpolluted waterways.
Did You Know?
This beetle carries a bubble of air under its wing covers when diving, which it uses to breathe underwater like a built-in scuba tank.