4f4c4942-4343-5764-6473-313235343632 English Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en 2026-09-29T14:43:33.51Z NRW 1.0 wel utf8 NONE A survey for larvae of the caddis Limnephilus tauricus on Cors Erddreiniog - Winter 2022 A survey for larvae of the caddis Limnephilus tauricus on Cors Erddreiniog - Winter 2022 2023-02-01 NRW_DS125462 http://naturalresources.wales/ The ‘Natur am Byth!’ partnership brings together environmental charities and Natural Resources Wales to deliver a programme focused on preventing species extinction and reconnecting people with nature in Wales. Following the rediscovery of adult specimens of the Vulnerable caddisfly Limnephilus tauricus at Cors Erddreiniog in July and August 2022, an extensive survey was undertaken to identify breeding sites and improve understanding of the species' distribution at its only known Welsh locality. A total of 26 locations were surveyed for larvae between November and December 2022. The survey also included searches for the Critically Endangered Limnephilus pati, a species known to occur alongside L. tauricus elsewhere but not previously recorded in Wales. The ‘Natur am Byth!’ partnership brings together environmental charities and Natural Resources Wales to deliver a programme focused on preventing species extinction and reconnecting people with nature in Wales. Following the rediscovery of adult specimens of the Vulnerable caddisfly Limnephilus tauricus at Cors Erddreiniog in July and August 2022, an extensive survey was undertaken to identify breeding sites and improve understanding of the species' distribution at its only known Welsh locality. A total of 26 locations were surveyed for larvae between November and December 2022. The survey also included searches for the Critically Endangered Limnephilus pati, a species known to occur alongside L. tauricus elsewhere but not previously recorded in Wales. 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 Buglife Buglife, Allia Future Business Centre, London Road, Peterborough, PE2 8AN info@buglife.org.uk 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 Limnephilus tauricus Cors Erddreiniog larvae NRW Thesaurus 2026-08-27 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. 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 SIR YNYS MON - ISLE OF ANGLESEY -4.31029 -4.27776 53.2916 53.32934 2022-11-28 2022-12-04 Wallace, I. & Wallace, B. A survey for larvae of the caddis Limnephilus tauricus on Cors Erddreiniog in winter 2022-23. Natur am Byth! Evidence Report No. 004. 28pp. Buglife & Natural Resources Wales. A Survey for Larvae of the Caddis Limnephilus tauricus on Cors Erddreiniog in winter 2022-23 Database Unknown Species records: Recorder 6 Documents Unknown Report in pdf format 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 Survey work was undertaken at Cors Erddreiniog between 28 November and 4 December 2022 to locate breeding sites of Limnephilus tauricus. Surveys were carried out during daylight hours, typically between 10:30 and 16:30, under favourable weather conditions with no rain or frost. A total of 26 locations were surveyed for larval specimens. Survey data were collected through targeted field searches of suitable aquatic habitats, with records used to assess the distribution and breeding status of L. tauricus and to investigate the potential presence of L. pati within the study area. Survey work was undertaken at Cors Erddreiniog between 28 November and 4 December 2022 to locate breeding sites of Limnephilus tauricus. Surveys were carried out during daylight hours, typically between 10:30 and 16:30, under favourable weather conditions with no rain or frost. A total of 26 locations were surveyed for larval specimens. Survey data were collected through targeted field searches of suitable aquatic habitats, with records used to assess the distribution and breeding status of L. tauricus and to investigate the potential presence of L. pati within the study area.