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




Key Characters 21 species in U.S. Often mistaken for mats of moss. Found on logs, stones, or twigs, individual zooids connect in a branched, twig-like manner to form colonies.
Tolerance unknown
Distribution CA, OR, WA, NV, AZ, Baja