Dark Hendrickson Mayfly vs White Miller Mayfly
Side-by-side species comparison
| Attribute | Dark Hendrickson Mayfly | White Miller Mayfly |
|---|---|---|
| Scientific Name | Leptophlebia cupida | Ephoron virgo |
| Order | Ephemeroptera | Ephemeroptera |
| Family | Leptophlebiidae | Polymitarcyidae |
| Size | 8-12 mm | 12-18 mm |
| Habitat | Rivers & Streams | Rivers & Streams |
| Diet | Detritivores | Omnivores |
| Regions | North America | Europe, Western Asia |
| Conservation | Least Concern | Least Concern |
Dark Hendrickson Mayfly
A dark-bodied spring mayfly important to trout anglers in the Northeast. Nymphs inhabit leaf packs and debris in slow to moderate stream sections.
Did You Know?
It often emerges alongside Ephemerella subvaria, and the two species together form the famed Hendrickson hatch.
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.