South American Giant Mayfly vs Western Ameletid Mayfly
Side-by-side species comparison
| Attribute | South American Giant Mayfly | Western Ameletid Mayfly |
|---|---|---|
| Scientific Name | Campsurus major | Ameletus cooki |
| Order | Ephemeroptera | Ephemeroptera |
| Family | Polymitarcyidae | Ameletidae |
| Size | 15-25 mm | 8-12 mm |
| Habitat | Rivers & Streams | Mountains |
| Diet | Omnivores | Omnivores |
| Regions | South America | North America |
| Conservation | Least Concern | Least Concern |
South American Giant Mayfly
A large tropical mayfly found in South American rivers and floodplains. Males have distinctive elongated forelegs used for grasping females during mating flights.
Did You Know?
Its mass emergences from Amazonian rivers provide a critical food pulse for fish and birds.
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.