Ischnosoma longicorne
Key Details
| Taxonomic Groups: | Invertebrate > insect - beetle (Coleoptera) > Rove beetle (tachyporine) |
| 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: | Ischnosoma longicorne |
| UKSI Recommended Authority: | (Mäklin, 1847) |
| UKSI Recommended Qualifier: | (none specified) |
| Red List Citation: | Lane, 2019 |
| Notes on taxonomy/listing: | (none) |
Criteria
| Question 1: | Does species need conservation or recovery in England? |
| Response: | Yes |
| Justification: | Rare and apparently much declined. Historically widespread but uncommon in England. Post-1989 records are from Oxfordshire (Shotover Hill, SP50, 2001), South Hampshire (Bignell Wood, 1999), West Sussex (Brandy Hole Copse, SU80, between 2002 and 2005), West Norfolk (Cranwich Heath, TL79, 2009) and East Norfolk (Wheatfen Broad, TG30, 1997 and Sutton Fen, TG32, 2016). occur mainly in wet woodland and in wooded fen and carr habitats where it is found in the ground layer, usually in leaf litter, bracken litter or in moss (including Sphagnum) as well as plant litter, perhaps in particular to litter heaps. |
| Question 2: | Does recovery/ conservation depend on species-specific actions? |
| Response: | Yes |
| Justification: | An apparent association with piles of plant material in wetland habitats - e.g. cut sedge or reed piles etc. - gives a specific target for conservation actions. |
| 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: | Increasing provision of cut litter piles in suitable habitats - wet woodland rides, wetlands etc. - may benefit this species if it is able to disperse to them. |
Species Assessment
| Current step on the Species Recovery Curve (SRC): | 6. Recovery solutions trialled |
| Recovery potential/expectation: | Unknown |
| National Monitoring Resource: | Opportunistic - insufficient |
| Species Comments: | Dispersal ability is not well understood. Patch habitat species are often good dispersers but the apparent rarity of this species may limit recovery potential. |
Key Actions
Key Action 1
Proposed Action: Provision of piles of cut plant material in wetland and wet woodland habitats on known sites.
Action targets: 6. Recovery solutions trialled
Action type: Habitat management
Duration: >10 years
Scale of Implementation: ≤ 10 sites
High priority sites: Oxfordshire (Shotover Hill, SP50, 2001), South Hampshire (Bignell Wood, 1999), West Sussex (Brandy Hole Copse, SU80, between 2002 and 2005), West Norfolk (Cranwich Heath, TL79, 2009) and East Norfolk (Wheatfen Broad, TG30, 1997 and Sutton Fen, TG32, 2016)
Comments:
Key Action 2
Proposed Action: Autecological study of extant populations to further clarify ecological requirements and identify any additional conservation actions required.
Action targets: 5. Remedial action identified
Action type: Scientific research
Duration: 2 years
Scale of Implementation: ≤ 5 sites
High priority sites: Oxfordshire (Shotover Hill, SP50, 2001), South Hampshire (Bignell Wood, 1999), West Sussex (Brandy Hole Copse, SU80, between 2002 and 2005), West Norfolk (Cranwich Heath, TL79, 2009) and East Norfolk (Wheatfen Broad, TG30, 1997 and Sutton Fen, TG32, 2016)
Comments:
Key Action 3
Proposed Action: Implement management practices to encourage good habitat conditions as identified by action 2 on known sites if necessary.
Action targets: 6. Recovery solutions trialled
Action type: Habitat management
Duration: Unknown
Scale of Implementation: Not applicable
High priority sites: Oxfordshire (Shotover Hill, SP50, 2001), South Hampshire (Bignell Wood, 1999), West Sussex (Brandy Hole Copse, SU80, between 2002 and 2005), West Norfolk (Cranwich Heath, TL79, 2009) and East Norfolk (Wheatfen Broad, TG30, 1997 and Sutton Fen, TG32, 2016)
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.