California Department of Fish and Wildlife
Aquatic Biological Assement

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Ephemeroptera Odonata Plecoptera Hemiptera Megaloptera Neuroptera Trichoptera Lepidoptera Coleoptera Diptera Non-Insects

Calopterygidae Level 1 Level 2



Key Characters

First antennal segment greatly elongated, as long as the length of the remaining segments. Prementum with deep medium cleft.

Tolerance 5-6
Distribution CA, OR, WA, NV, AZ, Baja