The Status of the Caddis Adicella filicornis in Wales (2016)
A survey for the Endangered caddis Adicella filicornis (Trichoptera) in 2016 found pupal cases at all four Welsh sites with modern records, and a single adult. Populations at Coed Dol-goch, Halton Wood, Prisk Wood and Wilderness Wood appear to be small and the habitat used by the caddis - very small permanent streams on quite steep slopes close to their origin from groundwater springs - is also highly localised and very fragile. Only Coed Dol-goch supports a reasonable area of habitat with several stations being occupied.
None of the sites has any statutory protection, although Prisk Wood is owned by the Gwent Wildlife Trust and Coed Dol-goch is a community woodland. Consideration should be given to notifying one, if not all, sites as Site of Special Scientific Interest (SSSI) for Adicella filicornis.
Prisk Wood and Wilderness Wood also support the only Welsh populations of the rare cranefly Ellipteroides alboscutellatus, a species associated with tufa-depositing seepages. Further surveys for Adicella filicornis at all four occupied sites are required to determine its status and distribution and to identify threats to its habitat.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS118342
- Metadata Language
- English
- Lineage
-
Surveys were by visual searches for adults, larvae and pupae.
- Additional Information
-
Wallace, ID & Wallace, B., (2017), The status of the caddis Adicella filicornis in Wales in 2016, NRW Evidence Report No: 200, 28pp., Natural Resources Wales, Bangor.
- Dataset Reference Date (Publication)
- 2017-03-31
Temporal Extent
- Begin date
- 2016-05-01
- End date
- 2017-03-17
- Topic category
-
- Biota
Extent
Extent
- Geographic Extent
- Wales (WLS)
))
Distribution
Distribution
- Format Type and Description
-
-
Database
(
Unknown
)
- Specification
-
Species records: Recorder 6
-
Documents
(
Unknown
)
- Specification
-
Report in pdf format
-
Database
(
Unknown
)
- Resource Locator
- Data Download ( WWW:LINK-1.0-http--link )
Quality
Data quality
- Quality Scope
- Dataset
- Conformity
- Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services
- Explanation
-
This dataset has not been assessed for conformance to the referenced INSPIRE regulation.
- Degree
- false
- Lineage
-
Surveys were by visual searches for adults, larvae and pupae.
Keywords
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2008-06-01
Keywords
-
NRW Thesaurus
-
- caddis Adicella filicornis
- trichoptera
- caddis flies
- Type
- Theme
Citation
- Date (Publication)
- 2026-08-27
Spatial Reference System
Content
Content Information
NRW Profile
Custom Elements
- NRW Related Title
-
The status of the caddis Adicella filicornis in Wales in 2016
Constraints
Constraints
Limitations on Public Access and Use
- Restriction type
- Other restrictions
Access Constraints Directive
- Limitations
- no limitations
Access Constraints Text
- Other constraints
-
There are no access restrictions to this data. NRW may release, publish or disseminate it freely.
Use Constraints
- Use constraints type
- Other restrictions
- Other constraints
-
© CNC/NRW Data may be re-used under the terms of the Open Government Licence providing it is done so, acknowledging both the source and NRW's copyright. It is the recipient's responsibility to ensure the data is fit for the intended purpose.
Attribution Statement
- Other constraints
-
Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved.
Licence
- Other constraints
- Open Government Licence
Metadata
Metadata
- File Identifier
- 4f4c4942-4343-5764-6473-313138333432 XML
- Metadata Language
- English
- Resource type
- Dataset
- Metadata Date
- 2026-09-29T14:59:53.995Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
-
1.0