Pyrgulopsis coloradensis Hershler, 1998:29

Blue Point pyrg



Taxonomy & Nomenclature



Conservation Status

Last record: 1992 (Suckling et al., 2004)

Rediscovered: 2007



Blue Point Spring, Colorado River drainage, Clark County, Nevada, USA


Biology & Ecology




Holotype: USNM 854621

Paratypes: USNM 860677






Original scientific description:

Hershler, R. (1998). A systematic review of the hydrobiid snails (Gastropoda: Rissooidea) of the Great Basin, western United States. Part I. Genus Pyrgulopsis. The Veliger 41(1): 1-132.


Other references:

Center for Biological Diversity, Freshwater Mollusk Conserva-tion Society, J.E. Deacon and D. Duff. 2009. Petition tolist 42 species of Great Basin springsnails from Nevada,Utah, and California as threatened or endangered underthe Endangered Species Act. Center for Biological Diver-sity, 133 p. 

Cowie, Robert H., Régnier, Claire, Fontaine, Benoît, and Bouchet, Philippe. (2017). Measuring the Sixth Extinction: what do mollusks tell us? The Nautilus 131(1): 3-41.

Hershler, Robert and Liu, Hsiu-Ping. (2017). Annotated Checklist of Freshwater Truncatelloidean Gastropods of the Western United States, with an Illustrated Key to the Genera. Technical Note 449. U.S. Department of the Interior, Bureau of Land Management, National Operations Center, Denver, CO.

Sada, D. W. (2002). Clark County spring surveys, 1999-2001. Unpublished report to Clark County, Division of Comprehensive Planning, Las Vegas, Nevada.

Suckling, Kieran, Slack, Rhiwena and Nowicki, Brian. (2004). Extinct and the Endangered Species Act. Centre For Biological Diversity. 63 pp.


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