White-Stockinged Black Fly vs Pale Morning Dun
Side-by-side species comparison
| Attribute | White-Stockinged Black Fly | Pale Morning Dun |
|---|---|---|
| Scientific Name | Simulium vittatum | Ephemerella excrucians |
| Order | Diptera | Ephemeroptera |
| Family | Simuliidae | Ephemerellidae |
| Size | 2-5 mm | 7-10 mm |
| Habitat | Rivers & Streams | Rivers & Streams |
| Diet | Blood Feeders | Detritivores |
| Regions | North America | North America |
| Conservation | Least Concern | Least Concern |
White-Stockinged Black Fly
A widespread black fly species complex with distinctive white-banded legs. Larvae colonize almost any flowing water from irrigation ditches to large rivers.
Did You Know?
It is one of the most commonly encountered black fly species in laboratory research.
Pale Morning Dun
A small pale yellowish mayfly that hatches in large numbers on western North American streams during late spring. It is a crucial food source for trout.
Did You Know?
Pale morning duns often hatch in such dense swarms that trout become highly selective, ignoring all but perfect imitations.