Hershler R, Liu H-P. New species and records of Pyrgulopsis (Gastropoda: Hydrobiidae) from the Snake River basin, southeastern Oregon: further delineation of a highly imperiled fauna. Zootaxa [Internet]. 2009 Feb. 9 [cited 2025 May 3];2006(1):1–22. Available from: https://www.mapress.com/zt/article/view/zootaxa.2006.1.1