Giant Michigan Mayfly vs South American Giant Mayfly
Side-by-side species comparison
| Attribute | Giant Michigan Mayfly | South American Giant Mayfly |
|---|---|---|
| Scientific Name | Hexagenia bilineata | Campsurus major |
| Order | Ephemeroptera | Ephemeroptera |
| Family | Ephemeridae | Polymitarcyidae |
| Size | 18-28 mm | 15-25 mm |
| Habitat | Rivers & Streams | Rivers & Streams |
| Diet | Detritivores | Omnivores |
| Regions | North America | South America |
| Conservation | Least Concern | Least Concern |
Giant Michigan Mayfly
A large burrowing mayfly with two dark stripes on its thorax. Nymphs dig into soft clay and silt bottoms of large rivers.
Did You Know?
Mass emergences along the Great Lakes have caused road closures due to the slippery accumulation of millions of dead adults.
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.