California Department of Fish and Wildlife
Aquatic Biological Assement

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Pteronarcyidae Level 1 Level 2

Pteronarcyidae

 

Key Characters

 Thoracic segments and abdominal segments 1 & 2 ( & possibly 3) have gills.Glossae and paraglossae subequal.

Tolerance 0-1
Distribution CA, OR, WA, NV, AZ