Map of California (A) and San Francisco Bay area (B, area occupied by rectangle in A) showing the collection localities for samples of P. stearnsiana (and closely related P. diablensis and P. giulianii) and the three new species (highlighted by arrows) that were used in the molecular analysis. Specimen codes are from Suppl. material 1.

  Part of: Hershler R, Liu H-P, Babbitt C, Kellogg MG, Howard JK (2016) Three new species of western California springsnails previously confused with Pyrgulopsis stearnsiana (Caenogastropoda, Hydrobiidae). ZooKeys 601: 1-19.