Large Spring Stonefly vs Western Glacier Stonefly

Side-by-side species comparison

Attribute Large Spring Stonefly Western Glacier Stonefly
Scientific Name Dinocras cephalotes Zapada glacier
Order Plecoptera Plecoptera
Family Perlidae Nemouridae
Size 20-35 mm 5-8 mm body length
Habitat Rivers & Streams Mountains
Diet Predators Omnivores
Regions Europe Glacier National Park, Montana
Conservation Least Concern Endangered

Large Spring Stonefly

One of the largest European stoneflies with a distinctively broad, flattened head. Nymphs are apex invertebrate predators in upland streams.

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Did You Know?

Despite their large wings, adults are poor fliers and prefer to run along streamside rocks.

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.

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Did You Know?

It may become one of the first insects driven to extinction by climate change as glaciers disappear.