Walckenaeria mitrata
Key Details
| Taxonomic Groups: | Invertebrate > spider (Araneae) > Spider |
| Red List Status: | Vulnerable (Not Relevant) [VU(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: | Walckenaeria mitrata |
| UKSI Recommended Authority: | (Menge, 1868) |
| UKSI Recommended Qualifier: | (none specified) |
| Red List Citation: | Harvey et al., 2017 |
| Notes on taxonomy/listing: | (none) |
Criteria
| Question 1: | Does species need conservation or recovery in England? |
| Response: | Yes |
| Justification: | VU, criteria: D2: No decline but recorded in GB from only 2 hectads in Kent |
| Question 2: | Does recovery/ conservation depend on species-specific actions? |
| Response: | Yes |
| Justification: | Extreme rarity even relative to apparent availability of specialised habitat |
| 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: | No |
| Justification: | This species would not benefit from untargeted management |
Species Assessment
| Current step on the Species Recovery Curve (SRC): | 2. Biological status assessment exists |
| Recovery potential/expectation: | Low - Combination or other (detail in comments) |
| National Monitoring Resource: | Opportunistic - insufficient |
| Species Comments: | Confined to Blean Woods under coppiced sweet chestnut/beech. Possibly edge of range and limited by specific habitat availability within this. |
Key Actions
Key Action 1
Proposed Action: Targeted survey of entire Blean complex and other areas of Sweet Chestnut coppice within semi-natural woodland areas in Kent
Action targets: 2. Biological status assessment exists
Action type: Status survey/review
Duration: 2 years
Scale of Implementation: ≤ 5 sites
High priority sites: Blean Woods complex, Kent
Comments:
Key Action 2
Proposed Action: Autecological research to establish microhabitat requirements and inform management
Action targets: 4. Autecology and pressures understood
Action type: Advice & support
Duration: >10 years
Scale of Implementation: ≤ 5 sites
High priority sites: Blean Woods complex
Comments: Where possible, combine with other Blean specialities (Pistius truncatus, Gonatium paradoxum, Clubiona caerulencens and Centromerus cavernarum (if phenology allows sufficient overlap).
Key Action 3
Proposed Action: Ensure site managers are aware of species past/recent presence and vulnerability on their sites. Update them with Action 1 and 2 results to provide any resulting guidance on locations/management and inform commissioning of invertebrate survey work (methods likely to detect/damage species, need for retention and examination of spider by-catch when not a survey target)
Action targets: 5. Remedial action identified
Action type: Advice & support
Duration: >10 years
Scale of Implementation: 1 site
High priority sites:
Comments: Most easily delivered by BAS/SRS. Related to Action 2.
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.