Tinodes pallidulus
Key Details
| Taxonomic Groups: | Invertebrate > insect - caddis fly (Trichoptera) > Caddisfly |
| 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: | Tinodes pallidulus |
| UKSI Recommended Authority: | McLachlan, 1878 |
| UKSI Recommended Qualifier: | (none specified) |
| Red List Citation: | Wallace, 2016 |
| Notes on taxonomy/listing: | Occasional larvae of Tinodes maclachlani can have the characteristic feature of larvae of T pallidulus so there are several other records of singleton larvae that should be treated as unconfirmed and these are not taken into account in these notes. At the moment there are not enough records to make this a Least Concern species but it is hoped it can be maintained at those sites and a few more added. |
Criteria
| Question 1: | Does species need conservation or recovery in England? |
| Response: | Yes |
| Justification: | Only found at a few sites |
| Question 2: | Does recovery/ conservation depend on species-specific actions? |
| Response: | Yes |
| Justification: | The lack of detailed knowledge of the micro-habitat means any special needs cannot be managed. It seems to be doing very well in one general area of the country (Wyre Forest) but is otherwise found as a few isolated populations and has been historically lost from sites in Surrey. |
| 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: | General habitat diversification is not likely to benefit this species. |
Species Assessment
| Current step on the Species Recovery Curve (SRC): | 2. Biological status assessment exists |
| Recovery potential/expectation: | Low - Relict or natural rarity |
| National Monitoring Resource: | Opportunistic - insufficient |
| Species Comments: | There are currently 3 certain English sites (and one in Wales) but at one of them (Wyre Forest) it is widespread in many streams. General habitat diversification is not likely to benefit this species but enhancing shaded areas for temperature control may be helpful. |
Key Actions
Key Action 1
Proposed Action: Survey the Wyre Forest and Royal Military Canal sites to determine how much of the populations uses the hygropetric zone at the edge of the stream and its seasonal use.
Action targets: 4. Autecology and pressures understood
Action type: Targeted monitoring
Duration: 2 years
Scale of Implementation: ≤ 5 sites
High priority sites: Royal Military Canal, Kent and Dowles Brook and tributaries in the Wyre Forest.
Comments: The margins of the stream may be the most important habitat to maintain and if the survey suggested that then it must be mentioned in management plans but probably does not only benefit this species.
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.