Dark Hendrickson Mayfly vs Western Ameletid Mayfly
Side-by-side species comparison
| Attribute | Dark Hendrickson Mayfly | Western Ameletid Mayfly |
|---|---|---|
| Scientific Name | Leptophlebia cupida | Ameletus cooki |
| Order | Ephemeroptera | Ephemeroptera |
| Family | Leptophlebiidae | Ameletidae |
| Size | 8-12 mm | 8-12 mm |
| Habitat | Rivers & Streams | Mountains |
| Diet | Detritivores | Omnivores |
| Regions | North America | North America |
| Conservation | Least Concern | Least Concern |
Dark Hendrickson Mayfly
A dark-bodied spring mayfly important to trout anglers in the Northeast. Nymphs inhabit leaf packs and debris in slow to moderate stream sections.
Did You Know?
It often emerges alongside Ephemerella subvaria, and the two species together form the famed Hendrickson hatch.
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.