- Species Common Name Columbia Gorge Caddisfly
- Species Scientific Name Neothremma andersoni
- Federal Listing Status Species of Concern
The West Cascades ecoregion extends from east of the Cascade Mountains summit to the foothills of the Willamette, Umpqua, and Rogue Valleys, and spans the entire length of the state of Oregon. It is largely dominated by conifer forests, moving into alpine parklands and dwarf shrubs at higher elevations.