Pistius truncatus
Key Details
| Taxonomic Groups: | Invertebrate > spider (Araneae) > Spider |
| Red List Status: | Critically Endangered (Not Relevant) [CR(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: | Pistius truncatus |
| UKSI Recommended Authority: | (Pallas, 1772) |
| 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: | CR, criteria: B2ab(ii,iv): 2 recent hectads in GB, both in the Blean Woods complex, Kent. Long lost from the New Forest. |
| Question 2: | Does recovery/ conservation depend on species-specific actions? |
| Response: | Yes |
| Justification: | Absent from much apparently suitable 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: | Unknown |
| National Monitoring Resource: | Opportunistic - insufficient |
| Species Comments: | Found mainly from young-growth oak/Sweet Chestnut coppice, in both the shrub and field layer |
Key Actions
Key Action 1
Proposed Action: Targeted survey of entire Blean woods complex and other Oak/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: 1 site
High priority sites: West Blean & Thornden Woods, Ellenden Wood and Church Woods SSSIs and intervening unnotified woodland.
Comments: Suggest combining survey with that for other Blean complex rarities with similar phenologies
Key Action 2
Proposed Action: Autecological research, particularly to establish microhabitat requirements to inform management and Action 1 search area.
Action targets: 4. Autecology and pressures understood
Action type: Scientific research
Duration: 3-5 years
Scale of Implementation: 1 site
High priority sites: Blean Woods complex
Comments:
Key Action 3
Proposed Action: Advise land managers/stakeholders on species' rarity/ locations/ habitat maintenance requirements
Action targets: 5. Remedial action identified
Action type: Advice & support
Duration: >10 years
Scale of Implementation: 1 site
High priority sites: Blean Woods, Kent
Comments: Raise awareness through Wilder Blean project.
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.