Giant Salmonfly vs Skimmer Stonefly
Side-by-side species comparison
| Attribute | Giant Salmonfly | Skimmer Stonefly |
|---|---|---|
| Scientific Name | Pteronarcys princeps | Acroneuria abnormis |
| Order | Plecoptera | Plecoptera |
| Family | Pteronarcyidae | Perlidae |
| Size | 35-50 mm | 20-30 mm |
| Habitat | Mountains | Rivers & Streams |
| Diet | Detritivores | Predators |
| Regions | North America | Eastern North America |
| Conservation | Least Concern | Least Concern |
Giant Salmonfly
A massive stonefly of western mountain rivers with a three-year nymphal life cycle. Nymphs feed on decomposing leaf material in cold streams.
Did You Know?
Adults are among the largest flying insects in North America and can barely sustain flight due to their weight.
Skimmer Stonefly
A large predatory stonefly widespread in eastern North American rivers. Adults skim across the water surface during egg-laying flights.
Did You Know?
Female skimmer stoneflies bounce across the water surface while releasing eggs, appearing to skip like a stone.