Iron Blue Dun vs Broad-shouldered Diving Beetle
Side-by-side species comparison
| Attribute | Iron Blue Dun | Broad-shouldered Diving Beetle |
|---|---|---|
| Scientific Name | Baetis muticus | Dytiscus latissimus |
| Order | Ephemeroptera | Coleoptera |
| Family | Baetidae | Dytiscidae |
| Size | 5-7 mm | 36-44 mm |
| Habitat | Rivers & Streams | Ponds & Lakes |
| Diet | Omnivores | Omnivores |
| Regions | Europe | Northern Europe, Scandinavia |
| Conservation | Least Concern | Vulnerable |
Iron Blue Dun
A small dark mayfly that hatches prolifically on cool overcast days. Nymphs are found clinging to stones in moderate to fast current.
Did You Know?
Hatches are most prolific during rain and cold snaps, making it a favorite species for wet-weather anglers.
Broad-shouldered Diving Beetle
The largest European diving beetle and one of the largest aquatic beetles in the world. It inhabits clean, fish-poor lakes and is increasingly rare.
Did You Know?
It is protected under the EU Habitats Directive and is one of the most endangered beetles in Europe.