Giant Michigan Mayfly vs Trico Mayfly
Side-by-side species comparison
| Attribute | Giant Michigan Mayfly | Trico Mayfly |
|---|---|---|
| Scientific Name | Hexagenia bilineata | Tricorythodes stygiatus |
| Order | Ephemeroptera | Ephemeroptera |
| Family | Ephemeridae | Leptohyphidae |
| Size | 18-28 mm | 3-6 mm |
| Habitat | Rivers & Streams | Rivers & Streams |
| Diet | Detritivores | Detritivores |
| Regions | North America | North 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.
Trico Mayfly
A tiny mayfly that forms enormous morning spinner falls over calm streams and rivers. Males have distinctive white bodies with black thoraxes.
Did You Know?
Trico spinner falls create such dense blankets of spent mayflies on the water surface that trout gorge themselves to satiation.