Mahogany Dun vs Small Minnow Mayfly
Side-by-side species comparison
| Attribute | Mahogany Dun | Small Minnow Mayfly |
|---|---|---|
| Scientific Name | Isonychia harperi | Callibaetis ferrugineus |
| Order | Ephemeroptera | Ephemeroptera |
| Family | Isonychiidae | Baetidae |
| Size | 13-17 mm | 7-11 mm |
| Habitat | Rivers & Streams | Ponds & Lakes |
| Diet | Omnivores | Detritivores |
| Regions | North America | North America |
| Conservation | Least Concern | Least Concern |
Mahogany Dun
A large reddish-brown mayfly with impressive filter-feeding forelegs. Nymphs prefer moderate to fast riffles with clean gravel substrates.
Did You Know?
Adults hold their forelegs forward in flight, making them easy to identify on the wing.
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.