Southern New England Coastal Plains and Hills

Caddisfly larvae signal clean water near upper Nyack

October 3, 2026

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(Limnephilus), a genus in family Limnephilidae, was observed 2026-10-02 in the upper Nyack area.¹ Caddisfly larvae require clean, well-oxygenated flowing water and are standard indicators of water quality, suggesting localized habitat conditions in that reach support sensitive aquatic life.¹

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