Species Insects & ArthropodsGolden Stonefly

Golden Stonefly

Acroneuria lycorias

CommonInsect & Arthropod
Illustration of Golden Stonefly (Acroneuria lycorias)

The Golden Stonefly is a large, yellow-and-brown stonefly with intricate dorsal patterning, common along rocky eastern streams in summer. Its nymphs are important clean-water indicators — abundant in unpolluted, well-oxygenated streams and absent from polluted ones. Fly fishers use stonefly patterns as some of the most effective artificial lures for trout.

Habitat
Fast, clean, rocky streams and rivers
Diet
Nymphs: aquatic invertebrates and insect larvae. Adults: algae and little else
How common
Common

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