South American Giant Mayfly vs Brown Drake Mayfly
Side-by-side species comparison
| Attribute | South American Giant Mayfly | Brown Drake Mayfly |
|---|---|---|
| Scientific Name | Campsurus major | Ephemera simulans |
| Order | Ephemeroptera | Ephemeroptera |
| Family | Polymitarcyidae | Ephemeridae |
| Size | 15-25 mm | 14-20 mm |
| Habitat | Rivers & Streams | Rivers & Streams |
| 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.
Brown Drake Mayfly
A large brownish mayfly with mottled wings that produces dramatic evening hatches on trout streams. Nymphs burrow in sandy and silty streambeds.
Did You Know?
Brown drake hatches occur over just a few days each year, creating some of the most spectacular dry-fly fishing of the season.