Giant Michigan Mayfly vs Demoiselle
Side-by-side species comparison
| Attribute | Giant Michigan Mayfly | Demoiselle |
|---|---|---|
| Scientific Name | Hexagenia bilineata | Calopteryx haemorrhoidalis |
| Order | Ephemeroptera | Odonata |
| Family | Ephemeridae | Calopterygidae |
| Size | 18-28 mm | 45-48 mm |
| Habitat | Rivers & Streams | Rivers & Streams |
| Diet | Detritivores | Predators |
| Regions | North America | Europe, Africa |
| 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.
Demoiselle
A Mediterranean damselfly with deeply pigmented wings and metallic body coloration.
Did You Know?
Males defend stream territories and perform dramatic wing-clapping courtship flights.