Photographs of ethanol preserved, relaxed specimens of F. klamathensis sp. n. (A) and F. modoci (B) from the Wood River south headspring, showing the differences in penial morphology A USNM 1469072 B USNM 1144736. Pn penis. Scale bar: 200 µm.

  Part of: Liu H-P, Hershler R (2019) A new species and range extensions for three other species of pebblesnails (Lithoglyphidae, Fluminicola) from the upper Klamath basin, California–Oregon. ZooKeys 812: 47-67.