Hershler, R.; Landye, J. J. (1988). Arizona Hydrobiidae (Prosobranchia: Rissoacea). <em>Smithsonian Contributions to Zoology.</em> 459: 1-63., available online athttps://repository.si.edu/handle/10088/5529 page(s): 21, fig. 11e [details]
original descriptionHershler, R.; Landye, J. J. (1988). Arizona Hydrobiidae (Prosobranchia: Rissoacea). <em>Smithsonian Contributions to Zoology.</em> 459: 1-63., available online athttps://repository.si.edu/handle/10088/5529 page(s): 21, fig. 11e [details]
additional sourceHershler, R. (1994). A review of the North American freshwater snail genus <i>Pyrgulopsis</i> (Hydrobiidae). <em>Smithsonian Contributions to Zoology.</em> 554: 1-115., available online athttps://repository.si.edu/handle/10088/5139[details] Available for editors [request]
Present Inaccurate Introduced: alien Containing type locality