4f4c4942-4343-5764-6473-313234363239 English Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en 2025-12-24T11:28:11.587Z NRW 1.0 wel NONE Aculeate Hymenoptera and Diptera assemblages at Dyfi National Nature Reserve – Ynyslas Dunes in 2019 Aculeate Hymenoptera and Diptera assemblages at Dyfi National Nature Reserve – Ynyslas Dunes in 2019 2019-11-30 NRW_DS124629 A survey of the aculeate bees & wasps and flies (Diptera) of Ynyslas Dunes was undertaken in 2019 in an attempt to determine the current condition of this site for these taxonomic groups. A total of 57 aculeate species was recorded, 17 of which were to the dunes resulting in a cumulative total of 119 species now known from the site. Only 40 of the 102 previously-recorded aculeates were refound in 2019. 22 of the 38 aculeate species identified as part of the Ynyslas Dunes dune invertebrate assemblage (currently consisting of 141 invertebrate species) were recorded duringthe current survey, and four recognized dune-dependent species were added to the site list. Lasioglossum xanthopus was recorded from a 2nd Welsh locality and Osmia bicolor was recorded new to VC46, both representing significant range expansions A survey of the aculeate bees & wasps and flies (Diptera) of Ynyslas Dunes was undertaken in 2019 in an attempt to determine the current condition of this site for these taxonomic groups. A total of 57 aculeate species was recorded, 17 of which were to the dunes resulting in a cumulative total of 119 species now known from the site. Only 40 of the 102 previously-recorded aculeates were refound in 2019. 22 of the 38 aculeate species identified as part of the Ynyslas Dunes dune invertebrate assemblage (currently consisting of 141 invertebrate species) were recorded duringthe current survey, and four recognized dune-dependent species were added to the site list. Lasioglossum xanthopus was recorded from a 2nd Welsh locality and Osmia bicolor was recorded new to VC46, both representing significant range expansions Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en Species distribution GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme Ynyslas Dunes Aculeate bees, wasps & ants diptera aculeate Hymenoptera aculeata (aculeates) (aculeate hymenoptera) (hymenoptera aculeate) blackflies NRW Thesaurus 2025-01-08 geonetwork.thesaurus.local.theme.converted_nrw-keywords There are no access restrictions on this data. NRW may release, publish or disseminate it freely. no limitations © 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. Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved. Open Government Licence English biota SeaVoX Vertical Co-ordinate Coverages 2021-01-06 Wales (WLS) -5.777741 -2.608865 51.240829 53.513067 2019-05-05 2019-08-02 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. Survey of aculeate Hymenoptera and Diptera assemblages at Dyfi National Nature Reserve – Ynyslas Dunes in 2019 Database [A] Published report electronic version (Microsoft Word and Adobe PDF formats) [B] Species records, which are held on the NRW Recorder 6 database (Welsh Invertebrate Database) 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 2010-12-08 This dataset has not been assessed for conformance to the referenced INSPIRE regulation. false Five days were spent on Ynyslas Dunes between 5th May and 2nd August 2019, visiting when suitable warm and sunny conditions were forecast. On each day, at least two entomologists undertook survey work. For recording purposes, the site was divided into three compartments duplicating the recording areas used on the previous surveys. Specimens were Obtained by hand searching, sweep netting and pan traps set out in various locations within each compartment. Locations of nest aggregations and significant species were recorded using GPS Five days were spent on Ynyslas Dunes between 5th May and 2nd August 2019, visiting when suitable warm and sunny conditions were forecast. On each day, at least two entomologists undertook survey work. For recording purposes, the site was divided into three compartments duplicating the recording areas used on the previous surveys. Specimens were Obtained by hand searching, sweep netting and pan traps set out in various locations within each compartment. Locations of nest aggregations and significant species were recorded using GPS