Embossed Stonefly vs Yellow Sally
Side-by-side species comparison
| Attribute | Embossed Stonefly | Yellow Sally |
|---|---|---|
| Scientific Name | Paragnetina immarginata | Isoperla fulva |
| Order | Plecoptera | Plecoptera |
| Family | Perlidae | Perlodidae |
| Size | 18-25 mm | 8-12 mm |
| Habitat | Rivers & Streams | Rivers & Streams |
| Diet | Predators | Omnivores |
| Regions | North America | Europe |
| Conservation | Least Concern | Least Concern |
Embossed Stonefly
A large patterned stonefly of clean eastern streams with raised body markings. Nymphs are top predators among stream cobble invertebrate communities.
Did You Know?
Nymphs moult up to 30 times before reaching adulthood, far more than most aquatic insects.
Yellow Sally
A bright yellow stonefly common in European upland streams. Nymphs are omnivorous, feeding on both algae and small invertebrates.
Did You Know?
The vivid yellow color serves no known warning function and fades quickly in preserved specimens.