Large Stonefly vs Giant Salmonfly
Side-by-side species comparison
| Attribute | Large Stonefly | Giant Salmonfly |
|---|---|---|
| Scientific Name | Perla bipunctata | Pteronarcys princeps |
| Order | Plecoptera | Plecoptera |
| Family | Perlidae | Pteronarcyidae |
| Size | 20-30 mm | 35-50 mm |
| Habitat | Rivers & Streams | Mountains |
| Diet | Predators | Detritivores |
| Regions | Europe | North America |
| Conservation | Near Threatened | Least Concern |
Large Stonefly
One of the largest European stoneflies with a distinctive pair of pale spots on its head. Its predatory nymphs live among stones in fast-flowing rivers.
Did You Know?
Large stonefly nymphs require three years to complete development, making them particularly vulnerable to long-term changes in water quality.
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.