Western Ameletid Mayfly vs Japanese Burrowing Mayfly
Side-by-side species comparison
| Attribute | Western Ameletid Mayfly | Japanese Burrowing Mayfly |
|---|---|---|
| Scientific Name | Ameletus cooki | Ephemera japonica |
| Order | Ephemeroptera | Ephemeroptera |
| Family | Ameletidae | Ephemeridae |
| Size | 8-12 mm | 15-25 mm |
| Habitat | Mountains | Rivers & Streams |
| Diet | Omnivores | Omnivores |
| Regions | North America | Japan, East Asia |
| 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.
Japanese Burrowing Mayfly
A large burrowing mayfly native to Japanese rivers and streams. It emerges in large numbers during early summer evenings.
Did You Know?
It is culturally significant in Japan, where mayfly emergence has been celebrated in poetry for centuries.