- 153 species in North America, most in the east
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Order: | Prosobranchia |
| Family: | Pleuroceridae |
Identification Tips:
• Elongated spiral shape with opening on right if facing with point up
• Whorls do not bulge out distinctly; flat profile
• Operculum small and often hidden
• 10-40 mm
Life History:
• Primarily found in rocky riffles or sandy shoals of rivers
• May be extremely abundant
• Feed on scraped algae and periphyton
| POLLUTION TOLERANCE | ||||
| Very Sensitive | Somewhat Sensitive | Facultative | Somewhat Tolerant | Very Tolerant |
| Most | Some | |||
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Primary Information Source:
Voshell, J. Reese. 2002. A Guide to Common Freshwater Invertebrates of North America. McDonald and Woodward Publishing Company. Blacksburg, Virginia.