California Department of Fish and Wildlife
Aquatic Biological Assement

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Phryganeidae Level 1 Level 2

Phryganeidae

 

Key Characters

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