Aculeate Hymenoptera and Diptera assemblages at Dyfi National Nature Reserve – Ynyslas Dunes in 2019
A survey of the aculeate bees, wasps and flies (Diptera) of Ynyslas Dunes was undertaken in 2019 to assess the current condition of the site for these important invertebrate groups. A total of 57 aculeate species was recorded, including 17 species new to the site, bringing the cumulative total of aculeate species known from Ynyslas Dunes to 119. However, only 40 of the 102 previously recorded aculeate species were refound during the survey.
Of the 38 aculeate species identified as part of the Ynyslas Dunes invertebrate assemblage, which currently comprises 141 dune-associated invertebrate species, 22 were recorded during the 2019 survey. In addition, four recognised dune-dependent species were added to the site list.
Notable records included Lasioglossum xanthopus, which was recorded at only its second Welsh locality, and Osmia bicolor, which was recorded for the first time in vice-county 46, both representing significant range extensions.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS124629
- Metadata Language
- English
- Lineage
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Survey work was undertaken over five days between 5 May and 2 August 2019 during suitable warm and sunny weather conditions. On each survey date, at least two entomologists carried out field surveys across Ynyslas Dunes. For recording purposes, the site was divided into three survey compartments, corresponding to recording areas used in previous surveys to facilitate comparison with historical data. Specimens were collected through hand-searching, sweep-netting and the use of pan traps deployed at various locations within each compartment. The locations of significant species and nesting aggregations were recorded using GPS. Survey records were compiled to assess the status and distribution of aculeate bees, wasps and flies (Diptera) within the dune system.
- Additional Information
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Jones, N. & Cheeseborough, I. 2019. Survey of the aculeate Hymenoptera and Diptera assemblages at Dyfi National Nature Reserve – Ynyslas Dunes in 2019. NRW Evidence Report No: 381, xxpp. Natural Resources Wales, Bangor.
- Dataset Reference Date (Publication)
- 2019-11-30
Temporal Extent
- Begin date
- 2019-05-05
- End date
- 2019-08-02
- Topic category
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- Biota
Extent
Extent
- Geographic Extent
- Wales (WLS)
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Distribution
Distribution
- Format Type and Description
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Database
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Unknown
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- Specification
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Species records: Recorder 6
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Documents
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Unknown
)
- Specification
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Report in pdf format
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Database
(
Unknown
)
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
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This dataset has not been assessed for conformance to the referenced INSPIRE regulation.
- Degree
- false
- Lineage
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Survey work was undertaken over five days between 5 May and 2 August 2019 during suitable warm and sunny weather conditions. On each survey date, at least two entomologists carried out field surveys across Ynyslas Dunes. For recording purposes, the site was divided into three survey compartments, corresponding to recording areas used in previous surveys to facilitate comparison with historical data. Specimens were collected through hand-searching, sweep-netting and the use of pan traps deployed at various locations within each compartment. The locations of significant species and nesting aggregations were recorded using GPS. Survey records were compiled to assess the status and distribution of aculeate bees, wasps and flies (Diptera) within the dune system.
Keywords
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2008-06-01
Keywords
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NRW Thesaurus
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- blackflies
- Ynyslas Dunes
- aculeate Hymenoptera
- Aculeate bees, wasps & ants
- diptera
- aculeata (aculeates) (aculeate hymenoptera) (hymenoptera aculeate)
- Type
- Theme
Citation
- Date (Publication)
- 2026-08-27
Spatial Reference System
- Code
- NONE
Content
Content Information
NRW Profile
Custom Elements
- NRW Related Title
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Survey of aculeate Hymenoptera and Diptera assemblages at Dyfi National Nature Reserve – Ynyslas Dunes in 2019
Constraints
Constraints
Limitations on Public Access and Use
- Restriction type
- Other restrictions
Access Constraints Directive
- Limitations
- no limitations
Access Constraints Text
- Other constraints
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There are no access restrictions on this data. NRW may release, publish or disseminate it freely.
Use Constraints
- Use constraints type
- Other restrictions
- Other constraints
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© 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: Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved.
Attribution Statement
- Other constraints
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Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved.
Licence
- Other constraints
- Open Government Licence
Metadata
Metadata
- File Identifier
- 4f4c4942-4343-5764-6473-313234363239 XML
- Metadata Language
- English
- Resource type
- Dataset
- Metadata Date
- 2026-09-29T15:27:21.103Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
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1.0