Caddisfly larvae signal clean water in Lundbreck

September 22, 2026

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caddisfly larvae were observed in Lundbreck, Alberta on 2026-09-09.¹ Free-living rhyacophilid larvae are sensitive to water quality changes and indicate relatively clean, oxygenated running water.¹

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More about Rhyacophila

The caddisflies are hatching now—Rhyacophila among them, along with Zebra…

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