Devil's Coach Horse vs White Miller Mayfly
Side-by-side species comparison
| Attribute | Devil's Coach Horse | White Miller Mayfly |
|---|---|---|
| Scientific Name | Ocypus olens | Ephoron virgo |
| Order | Coleoptera | Ephemeroptera |
| Family | Staphylinidae | Polymitarcyidae |
| Size | 22-32 mm | 12-18 mm |
| Habitat | Underground | Rivers & Streams |
| Diet | Omnivores | Omnivores |
| Regions | Europe, introduced to North America | Europe, Western Asia |
| Conservation | Least Concern | Least Concern |
Devil's Coach Horse
A large, matt-black rove beetle that raises its tail like a scorpion when threatened. It has powerful jaws and emits a foul smell.
Did You Know?
In medieval Ireland it was believed to have the power to curse a person it pointed its tail at.
White Miller Mayfly
A white-bodied European mayfly that emerges in enormous synchronized swarms at dusk. Females are unique among mayflies in that they moult directly into the spinner stage.
Did You Know?
Swarms at bridges and streetlights can be so thick they cause traffic hazards.