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Phryganeidae Level 1 Level 2
Mesonotum largely unsclerotized. Abdominal segment IX with dorsal, sclerotized plate. Prosternal horn present. Slender, cylindrical cases. Larvae attain large sizes (up to 4 cm). Principally lentic habitats, a few occurring in streams. Shredders of coarse organic material, a few are predators.
|Tolerance||generally 4-5, as low as 1 in Yphria sp.|
|Distribution||CA, OR, WA|