Looping Snail (Truncatella subcylindrica)
Key Details
| Taxonomic Groups: | Invertebrate > mollusc > Mollusc (non-marine) |
| Red List Status: | Near Threatened (Not Relevant) [NT(nr)] |
| D5 Status: | Included in the baseline Red List Index for England (Wilkins, Wilson & Brown, 2022) |
| Section 41 Status: | (not listed) |
| Taxa Included Synonym: | (none) |
| UKSI Recommended Name: | Truncatella subcylindrica |
| UKSI Recommended Authority: | (Linnaeus, 1767) |
| UKSI Recommended Qualifier: | (none specified) |
| Red List Citation: | Seddon et al., 2014 |
| Notes on taxonomy/listing: | (none) |
Criteria
| Question 1: | Does species need conservation or recovery in England? |
| Response: | Yes |
| Justification: | Near Threatened on Red List and all of the GB population in in southern and eastern England |
| Question 2: | Does recovery/ conservation depend on species-specific actions? |
| Response: | Yes |
| Justification: | Although a generalist species living in upper shore gravel and beneath boulders, its current status is unknown. Major threats are sea level rise affecting / removing its habitat and potential damage by beach management operations (bull dozing shingle and gravel). |
| Question 3: | At a landscape scale, would the species benefit from untargeted habitat management to increase habitat mosaics, structural diversity, or particular successional stages? |
| Response: | Yes |
| Justification: | Maintenance of the upper shore through natural processes (e.g. as at Pagham Harbour) |
Species Assessment
| Current step on the Species Recovery Curve (SRC): | 4. Autecology and pressures understood |
| Recovery potential/expectation: | Low - Climate change |
| National Monitoring Resource: | Opportunistic - insufficient |
| Species Comments: |
Key Actions
Key Action 1
Proposed Action: Undertake targeted surveys at known and potential further sites to establish current status and feed into an updated Red List.
Action targets: 3. National Monitoring Plan agreed and implemented
Action type: Status survey/review
Duration: 3-5 years
Scale of Implementation: ≤ 50 sites
High priority sites: Sites around Chichester & Portsmouth Harbours, sheltered Solent coastlines and estuarine saltmarshes (e.g. River Exe) along the south coast as far as Cornwall.
Comments:
Acknowledgment:
Data used on this website are adapted from Threatened species recovery actions 2025 baseline (JP065): Technical report and spreadsheet user guide (Natural England, 2025). Available here.