Mahogany Dun vs South American Giant Mayfly
Side-by-side species comparison
| Attribute | Mahogany Dun | South American Giant Mayfly |
|---|---|---|
| Scientific Name | Isonychia harperi | Campsurus major |
| Order | Ephemeroptera | Ephemeroptera |
| Family | Isonychiidae | Polymitarcyidae |
| Size | 13-17 mm | 15-25 mm |
| Habitat | Rivers & Streams | Rivers & Streams |
| Diet | Omnivores | Omnivores |
| Regions | North America | South America |
| Conservation | Least Concern | Least Concern |
Mahogany Dun
A large reddish-brown mayfly with impressive filter-feeding forelegs. Nymphs prefer moderate to fast riffles with clean gravel substrates.
Did You Know?
Adults hold their forelegs forward in flight, making them easy to identify on the wing.
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.