Speckled Peter Stonefly vs Yellow Sally Stonefly
Side-by-side species comparison
| Attribute | Speckled Peter Stonefly | Yellow Sally Stonefly |
|---|---|---|
| Scientific Name | Paragnetina media | Isoperla grammatica |
| Order | Plecoptera | Plecoptera |
| Family | Perlidae | Perlodidae |
| Size | 15-22 mm | 8-14 mm |
| Habitat | Rivers & Streams | Rivers & Streams |
| Diet | Predators | Omnivores |
| Regions | North America | Europe |
| Conservation | Least Concern | Least Concern |
Speckled Peter Stonefly
A medium-sized patterned stonefly of eastern streams with distinctive speckled wing markings. Nymphs are voracious predators among cobbles.
Did You Know?
Nymphs have been observed actively stalking prey rather than simply ambushing passing invertebrates.
Yellow Sally Stonefly
A common European stonefly with a distinctive yellow body, emerging in late spring on clean rivers. It is a well-known species among European fly anglers.
Did You Know?
Yellow sally stoneflies drum their abdomens on surfaces to produce vibrations that attract mates, a behavior unique to stoneflies.