DistributionRead full entry
Range DescriptionThis species can be found in the USA in northern Idaho and a small adjoining portion of extreme western Montana (Nussbaum et al. 1983, Petranka 1998); disjunctive populations in the Salmon River drainage near Warm Lake, Idaho (Petranka 1998). This species is known from two locations in western Montana (Reichel and Flath 1995). Occurs in over 250 miles of stream (C. Peterson pers. comm., 1997).