California Department of Fish and Wildlife
Aquatic Biological Assement

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

Jump to:

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



Key Characters Small (8mm or less) snails found in a number of different habitats. Shell with a depresed spire, operculum multispiral (vs. concentric operculum in Viviparidae). Valvata is the only genus in CA.
Tolerance unknown
Distribution CA, OR, WA, UT