Variation in central radular teeth, UKLF. multifarius A, C, E USNM 1207968 B USNM 144951 D USNM 1144368 F Central teeth, USNM 1207970. Scale bar: 10 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.