Pale Morning Dun vs Iron Blue Dun
Side-by-side species comparison
| Attribute | Pale Morning Dun | Iron Blue Dun |
|---|---|---|
| Scientific Name | Ephemerella excrucians | Baetis muticus |
| Order | Ephemeroptera | Ephemeroptera |
| Family | Ephemerellidae | Baetidae |
| Size | 7-10 mm | 5-7 mm |
| Habitat | Rivers & Streams | Rivers & Streams |
| Diet | Detritivores | Omnivores |
| Regions | North America | Europe |
| Conservation | Least Concern | Least Concern |
Pale Morning Dun
A small pale yellowish mayfly that hatches in large numbers on western North American streams during late spring. It is a crucial food source for trout.
Did You Know?
Pale morning duns often hatch in such dense swarms that trout become highly selective, ignoring all but perfect imitations.
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.