Yellow Sally vs Western Glacier Stonefly
Side-by-side species comparison
| Attribute | Yellow Sally | Western Glacier Stonefly |
|---|---|---|
| Scientific Name | Isoperla fulva | Zapada glacier |
| Order | Plecoptera | Plecoptera |
| Family | Perlodidae | Nemouridae |
| Size | 8-12 mm | 5-8 mm body length |
| Habitat | Rivers & Streams | Mountains |
| Diet | Omnivores | Omnivores |
| Regions | Europe | Glacier National Park, Montana |
| Conservation | Least Concern | Endangered |
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.
Western Glacier Stonefly
A cold-specialist stonefly found only in glacier-fed streams in Glacier National Park. It is threatened by the retreat of mountain glaciers.
Did You Know?
It may become one of the first insects driven to extinction by climate change as glaciers disappear.