Bayesian tree based on the COI dataset. The four lineages of P. stearnsianasensu lato are identified by arrows. Posterior probabilities for nodes are shown when >95%. 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.