Yellow Sally Stonefly vs Small-headed Stonefly
Side-by-side species comparison
| Attribute | Yellow Sally Stonefly | Small-headed Stonefly |
|---|---|---|
| Scientific Name | Isoperla grammatica | Perlodes microcephala |
| Order | Plecoptera | Plecoptera |
| Family | Perlodidae | Perlodidae |
| Size | 8-14 mm | 15-22 mm body |
| Habitat | Rivers & Streams | Rivers & Streams |
| Diet | Omnivores | Predators |
| Regions | Europe | Europe |
| Conservation | Least Concern | Least Concern |
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.
Small-headed Stonefly
A large spring-emerging stonefly found in clean upland rivers. Nymphs are predatory, feeding on mayfly and midge larvae. An important bioindicator species.
Did You Know?
Nymphs require the cleanest, most oxygen-rich water of any stonefly, making them sensitive pollution indicators.