Yellow May Dun vs Labrador Minnow Mayfly
Side-by-side species comparison
| Attribute | Yellow May Dun | Labrador Minnow Mayfly |
|---|---|---|
| Scientific Name | Heptagenia sulphurea | Baetis labradoriensis |
| Order | Ephemeroptera | Ephemeroptera |
| Family | Heptageniidae | Baetidae |
| Size | 10-15 mm | 5-8 mm |
| Habitat | Rivers & Streams | Rivers & Streams |
| Diet | Omnivores | Omnivores |
| Regions | Europe | North America |
| Conservation | Least Concern | Least Concern |
Yellow May Dun
A bright sulfur-yellow mayfly common across European rivers during early summer. Its flat nymphs are adapted to fast-flowing water on stony substrates.
Did You Know?
The striking yellow color of this mayfly makes it one of the most easily recognizable species on European rivers.
Labrador Minnow Mayfly
A small mayfly found in cold northern streams with rapid currents. Nymphs cling to submerged stones and feed on periphyton.
Did You Know?
Nymphs can complete their development in as little as three weeks during warm summer conditions.