White Miller Mayfly vs Small Minnow Mayfly
Side-by-side species comparison
| Attribute | White Miller Mayfly | Small Minnow Mayfly |
|---|---|---|
| Scientific Name | Ephoron virgo | Callibaetis ferrugineus |
| Order | Ephemeroptera | Ephemeroptera |
| Family | Polymitarcyidae | Baetidae |
| Size | 12-18 mm | 7-11 mm |
| Habitat | Rivers & Streams | Ponds & Lakes |
| Diet | Omnivores | Detritivores |
| Regions | Europe, Western Asia | North America |
| Conservation | Least Concern | Least Concern |
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.
Small Minnow Mayfly
A mottled brown mayfly common in still waters across North America. Nymphs are excellent swimmers that mimic small minnows.
Did You Know?
It can produce up to three generations per year in warm climates.