BC Conservation Data Centre: Conservation Status Report
Oreohelix subrudis
Subalpine Mountainsnail
| Scientific Name: | Oreohelix subrudis |
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| English Name: | Subalpine Mountainsnail |
| Provincial Status Summary | |
| Status: | S3 |
| Date Status Assigned: | December 01, 2015 |
| Date Last Reviewed: | January 27, 2025 |
| Reasons: | This species has a restricted range in BC in SE corner with few known occurrences. The habitat, though relatively common, has some threats. |
| Range | |
| Range Extent: | E = 5,000-20,000 square km |
| Range Extent Estimate (km2): | 7700 |
| Range Extent Comments: | Approximately 7700 km2 primarily in the extreme southeastern BC in the Flathead and around Fernie and the Crowsnest Pass, with a couple of records westward near Creston and Stagleap Provincial Park (GBIF; accessed 19 October 2024, RBCM ) |
| Area of Occupancy (km2): | U = Unknown |
| Occurrences & Population | |
| Number of Occurrences: | C = 21 - 80 |
| Comments: | There are 21 known locations in BC for this species (GBIF; accessed 19 October 2024), with much suitable habitat in the range. |
| Number of Occurrences with Good Viability / Ecological Integrity: | U = Unknown |
| Number of Occurrences Appropriately Protected & Managed: | Rank Factor not assessed |
| Population Size: | U = Unknown |
| Threats (to population, occurrences, or area affected) | |
| Degree of Threat: | U = Unknown |
| Comments: |
Potential threats to this species may include forestry, development, recreation and drought. This is based on the preferred habitats of moist places in leaf litter, or under downed logs and often near seeps or springs with canopy species including western red-cedar, western hemlock, Douglas-fir, Engelmann spruce, ponderosa pine, aspen, paper birch alder or willow. It is sometimes found on talus slopes (Montana Field Guide; retrieved October 2024). |
| Trend (in population, range, area occupied, and/or condition of occurrences) | |
| Short-Term Trend: | U = Unknown |
| Long-Term Trend: | U = Unknown |
| Other Factors | |
| Intrinsic Vulnerability: | U=Unknown |
| Environmental Specificity: | C=Moderate. Generalist or community with some key requirements scarce. |
| Comments: | Relatively undisturbed forests and subalpine meadows in southeastern BC (Forsyth 2004, 2014). |
| Other Rank Considerations: | |
| Information Gaps | |
| Research Needs: | |
| Inventory Needs: | |
| Stewardship | |
| Protection: | |
| Management: | |
| Version | |
| Author: | Ramsay, L. (2024), Forsyth, R. and L. Gelling (2015) |
| Date: | October 19, 2024 |
| References | |
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Forsyth, R. 2014. General Status rank assessment of the terrestrial molluscs of British Columbia. Prepared for Canadian Wildlife Service, Environment Canada. Gatineau, PQ.
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Forsyth, R.G. 2004. Land snails of British Columbia. University of British Columbia Press. Vancouver, BC. 176pp.
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GBIF.org. 2024p. GBIF. Occurrence download for Oreohelix subrudis. Accessed 19 October 2024.
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Montana Field Guide. 2024a. Montana Natural Heritage Program. Subalpine Mountainsnail ? Oreohelix subrudis. Retrieved on 19 October 2024, https://FieldGuide.mt.gov/speciesDetail.aspx?elcode=IMGASB5330
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Royal British Columbia Museum (RBCM). RBCM Invertebrate Collection.
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Please visit the website Conservation Status Ranks for information on how the CDC determines conservation status ranks. For global conservation status reports and ranks, please visit the NatureServe website http://www.natureserve.org/.
Suggested Citation:
B.C. Conservation Data Centre. 2024. Conservation Status Report: Oreohelix subrudis. B.C. Minist. of Environment. Available: https://a100.gov.bc.ca/pub/eswp/ (accessed Jun 13, 2026).