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 Thick, solid shell, adults larger than 10mm. Operculum corneous, paucispiral. Juga is the only genus in CA
Tolerance unknown
Distribution CA, OR, WA