Western Ameletid Mayfly vs Cahill Mayfly
Side-by-side species comparison
| Attribute | Western Ameletid Mayfly | Cahill Mayfly |
|---|---|---|
| Scientific Name | Ameletus cooki | Stenacron interpunctatum |
| Order | Ephemeroptera | Ephemeroptera |
| Family | Ameletidae | Heptageniidae |
| Size | 8-12 mm | 8-12 mm |
| Habitat | Mountains | Rivers & Streams |
| Diet | Omnivores | Detritivores |
| Regions | North America | North America |
| Conservation | Least Concern | Least Concern |
Western Ameletid Mayfly
A streamlined mayfly found in cold mountain streams of the Pacific Northwest. Nymphs are agile swimmers that dart between cobbles in riffles.
Did You Know?
Nymphs are strong enough swimmers to move upstream against moderate currents.
Cahill Mayfly
A cream-to-tan colored mayfly found throughout eastern North America. It is named after the classic Light Cahill fly fishing pattern it inspired.
Did You Know?
The Light Cahill fly pattern, inspired by this mayfly, has been a staple of American fly fishing since the 1880s.