Caenis Mayfly vs Autumn Dun
Side-by-side species comparison
| Attribute | Caenis Mayfly | Autumn Dun |
|---|---|---|
| Scientific Name | Caenis horaria | Leptophlebia marginata |
| Order | Ephemeroptera | Ephemeroptera |
| Family | Caenidae | Leptophlebiidae |
| Size | 3-6 mm | 10-14 mm |
| Habitat | Rivers & Streams | Woodlands |
| Diet | Detritivores | Detritivores |
| Regions | Europe | Europe |
| Conservation | Least Concern | Least Concern |
Caenis Mayfly
One of the smallest mayflies, often called the 'angler's curse' because trout feed on them selectively. Larvae inhabit slow-flowing rivers and lake margins.
Did You Know?
Caenis mayflies are called the angler's curse because their tiny size makes matching them with artificial flies nearly impossible.
Autumn Dun
A dark-winged mayfly that emerges in spring despite its common name. Nymphs inhabit slow-flowing sections of woodland streams among leaf litter.
Did You Know?
Its common name refers to the brownish autumnal color of the adult, not its emergence season.