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The Conversation USA

Stoneflies and mayflies, canaries of our streams

  • Written by Boris Kondratieff, Professor of Entomology and Curator of the C. P. Gillette Museum of Arthropod Diversity, Colorado State University
The presence of mayflies and stone flies indicates clean water is nearby.Andrew/flickr, CC BY-NC

Experienced anglers recognize that for a trout, the ultimate “steak dinner” is a stonefly or mayfly. That’s why fly fishing enthusiasts will go to extreme lengths to imitate these graceful, elegant and fragile insects.

I share their...

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