Species: Zacoleus idahoensis

F - 20,000-200,000 square km (about 8000-80,000 square miles) - F - This species was originally found in the Lower Salmon-Little Salmon River drainage, Clearwater (including Lochsa and Selway) River drainage, Coeur d'Alene (including St. Joe) River drainage, Washington; Adams, Idaho, Bonner, Kootenai, Shoshone, and Clearwater Cos., Idaho; and Clark Fork River drainage, Sanders Co., Montana. Old sites are in the Idaho Panhandle National Forests, Clearwater National Forest, Nez Perce National Forest, Payette National Forest, and Lolo National Forest, as well as on BLM and other lands in this same region. It still occurs at scattered sites in the original distribution and was collected recently (1988-1994) also at a few sites in the Lolo Pass area; Couer d'Alene drainage; and Clearwater drainage (Frest and Johannes, 1995). In Montana, records exist for four widely separated sites in four counties but none have been revisited recently (Hendricks, 2003). Hendricks and Maxell (2005) list about 30 sites in central to northern Idaho (9 new) in 6 counties and 8 sites in 5 counties in northwest Montana. Most recently, it was discovered for the first time in the Ktunaxa Traditional Territory in southeastern British Columbia (which extends from near Canada - U.S. border north to about 50 km north of Cranbrook) (Ovaska and Sopuck, 2009).