Giant Michigan Mayfly vs Ridged Water Scavenger Beetle
Side-by-side species comparison
| Attribute | Giant Michigan Mayfly | Ridged Water Scavenger Beetle |
|---|---|---|
| Scientific Name | Hexagenia bilineata | Helochares obscurus |
| Order | Ephemeroptera | Coleoptera |
| Family | Ephemeridae | Hydrophilidae |
| Size | 18-28 mm | 4-6 mm |
| Habitat | Rivers & Streams | Ponds & Lakes |
| Diet | Detritivores | Detritivores |
| Regions | North America | Europe, North 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.
Ridged Water Scavenger Beetle
A small brown water beetle found in well-vegetated ponds across Europe. Females carry their egg sacs beneath the body until the larvae hatch.
Did You Know?
The female carries her egg case attached to the underside of her body, a rare form of parental care in beetles.