Iron Blue Dun vs South American Giant Mayfly
Side-by-side species comparison
| Attribute | Iron Blue Dun | South American Giant Mayfly |
|---|---|---|
| Scientific Name | Baetis muticus | Campsurus major |
| Order | Ephemeroptera | Ephemeroptera |
| Family | Baetidae | Polymitarcyidae |
| Size | 5-7 mm | 15-25 mm |
| Habitat | Rivers & Streams | Rivers & Streams |
| Diet | Omnivores | Omnivores |
| Regions | Europe | South America |
| Conservation | Least Concern | Least Concern |
Iron Blue Dun
A small dark mayfly that hatches prolifically on cool overcast days. Nymphs are found clinging to stones in moderate to fast current.
Did You Know?
Hatches are most prolific during rain and cold snaps, making it a favorite species for wet-weather anglers.
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.