Submit photo to: Conservation.Strategy@ODFW.state.gov
Juga newberryi is a medium-sized gilled freshwater snail. Its shell usually contains three yellow bands separated by three very dark colored or tan bands. The shell can also appear without any bands and instead be a yellowish-tan to dark tan color. Juga snails have tall shells that are conic in shape and relatively thick and heavy.
The banded juga’s habitat consists of cold, clear water in portions of the Deschutes River that are 0-16 inches deep. It is sensitive to physical disturbances in its habitat and only appears in relatively undisturbed portions of the Deschutes River. It occurs primarily in gravel-boulder riffles and rapid edges of areas with a moderately swift current. It may also appear in cold springs and spring runs on exposed basalt bedrock cliff faces.
Limiting factors
Increasing recreational usage of the Deschutes Wild and Scenic River is a major concern for J. newberryi. It occurs only in the most undisturbed portions of the river, and seems to be sensitive to physical disturbance. Any factors tending to downgrade water quality, including nutrient enhancement, would negatively impact this taxon.
Data gaps
Collect life history information. Obtain current population size and trend data. Assess distribution and determine range.
Conservation actions
Monitor existing populations and survey suitable habitat for new populations. Manage new and known sites and their associated watersheds to reduce the impacts of recreational activity, urban development, water diversions, construction activities, and other practices that may adversely affect water quality. Maintain water quality, substrate conditions, and canopy cover at occupied sites.
Key reference or plan
Petition to list the Banded Juga (Juga newberryi) as a Threatened or Endangered Species Under the Endangered Species Act. 2024. The Center for Biological Diversity. 17 pp.
Fallon, C., K. Hietala-Henschell, and S.F. Jordan. 2020. Interagency Special Status/Sensitive Species Program (ISSSSP) Species Fact Sheet: Juga newberryi. USDA Forest Service Region 6 and USDI Bureau of Land Management Oregon State Office. 14 pp.
