Prairie Sprite -
Promenetus exacuous megas
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See (Clarke 1981) for general description.
Known originally from western Montana, and currently may be found in northwest Montana kettle lakes that are undisturbed; exact extent unknown (Frest and Johannes 1995).
Threats or Limiting Factors
According to (Frest and Johannes 1995), the species faces ongoing major threats and a very substantial reduction in habitat; species is not found in strongly eutropified kettle lakes, nor in streams; lakes used as part of irrigation systems, with untreated sewage, or having other sources of nutrient enrichment, seem to lack the species; lakes with extensive treatment to kill out aquatic macrophytes or to stock or modify the native fish fauna also seem to lack this species (Frest and Johannes 1995).
Literature Cited Above
Legend: View Online Publication Clarke, A.H. 1981. The freshwater molluscs of Canada. National Museum of Natural Sciences, National Museums of Canada, Ottawa. 446 pp. Frest, T.J. and E.J. Johannes. 1995. Interior Columbia Basin mollusk species of special concern. Final report to the Interior Columbia Basin Ecosystem Management Project, Walla Walla, WA. Contract #43-0E00-4-9112. 274 pp. plus appendices. Additional Sources of Information Related to "Snails / Slugs"