California Department of Fish and Wildlife
Aquatic Biological Assement

California Digital Reference Collection Home | Family Level | Level 1 Taxonomy | Level 2 Taxonomy

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



Key Characters 10 families in U.S. 1 - 3 mm in length. Found in all types of water, including highly polluted areas. Tubular, segmented body.
Tolerance 8-10
Distribution CA, OR, WA, NV, AZ, Baja