California Department of Fish and Wildlife
Aquatic Biological Assement

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Perlodidae Level 1 Level 2

Perlodidae

 

Key Characters

Paraglossae much longer than glossae, tips of paraglossae are pointed. Branched thoracic gills almost always absent. May have simple fingerlike gills beneath head or on the thorax. Cerci longer than length of abdomen.

Tolerance 0-2
Distribution CA, OR, WA, NV, AZ, Baja