Pale Morning Dun vs Cottonwood Stag Beetle
Side-by-side species comparison
| Attribute | Pale Morning Dun | Cottonwood Stag Beetle |
|---|---|---|
| Scientific Name | Ephemerella excrucians | Lucanus mazama |
| Order | Ephemeroptera | Coleoptera |
| Family | Ephemerellidae | Lucanidae |
| Size | 7-10 mm | 22-35 mm |
| Habitat | Rivers & Streams | Rivers & Streams |
| Diet | Detritivores | Wood Feeders |
| Regions | North America | Central and Southern United States |
| Conservation | Least Concern | Least Concern |
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.
Cottonwood Stag Beetle
A medium-sized North American stag beetle found near river bottoms. Males have moderately large mandibles.
Did You Know?
They are most commonly found near cottonwood and willow trees along river corridors.