Western Glacier Stonefly vs Yellow Stonefly
Side-by-side species comparison
| Attribute | Western Glacier Stonefly | Yellow Stonefly |
|---|---|---|
| Scientific Name | Zapada glacier | Isoperla dicala |
| Order | Plecoptera | Plecoptera |
| Family | Nemouridae | Perlodidae |
| Size | 5-8 mm body length | 9-13 mm |
| Habitat | Mountains | Rivers & Streams |
| Diet | Omnivores | Predators |
| Regions | Glacier National Park, Montana | North America |
| Conservation | Endangered | Least Concern |
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.
Yellow Stonefly
A bright yellow springfly found in clean Appalachian streams. Nymphs are predatory on small invertebrates in gravel substrates.
Did You Know?
Males produce vibrational signals by rubbing their abdomen against the substrate, audible through special sensors.