4f4c4942-4343-5764-6473-313137303937 English Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en 2025-12-24T09:27:05.996Z NRW 1.0 wel British National Grid (EPSG::27700) The Status of the Snowdon Beetle Chrysolina cerealis on Yr Wyddfa (2016) The Status of the Snowdon Beetle Chrysolina cerealis on Yr Wyddfa (2016) Statws Chwilen yr Wyddfa Chrysolina cerealis ar Yr Wyddfa (2016) 2017-03-31 NRW_DS117097 The Snowdon Beetle Chrysolina cerealis is restricted in the United Kingdom to Snowdon (Yr Wyddfa), although it was also found in Cwm Idwal until 1980. As recent records of the beetle have been few, a survey was undertaken in 2015 (NRW_DS116513) in an attempt to determine its status and distribution. A total of five beetles (four larvae and one adult) was found following 63.5 hours of hand searching on and around thyme plants (the only recorded foodplant of the beetle in the UK) and stone-turning near patches of thyme from June to September 2015, with all specimens found in Clogwyn Coch in September. No beetles were found in Cwm du'r Arddu, its traditional hotspot, despite exhaustive searches. A continuation of the survey from May to October 2016 located ten adults and one larva following 69 hours of search, with all adults recorded in Clogwyn Coch and the larva found under a stone in Cwm Glas Bach. The 2016 survey reinforces the suggestion that the beetle may be retreating to higher altitudes, perhaps as a consequence of climate change or other factors. Over the two year period, 16 beetles (11 adults and 5 larvae) have been found after more than 130 hours of search. As in 2015, no beetles were found in Cwm Idwal. The Snowdon Beetle Chrysolina cerealis is restricted in the United Kingdom to Snowdon (Yr Wyddfa), although it was also found in Cwm Idwal until 1980. As recent records of the beetle have been few, a survey was undertaken in 2015 (NRW_DS116513) in an attempt to determine its status and distribution. A total of five beetles (four larvae and one adult) was found following 63.5 hours of hand searching on and around thyme plants (the only recorded foodplant of the beetle in the UK) and stone-turning near patches of thyme from June to September 2015, with all specimens found in Clogwyn Coch in September. No beetles were found in Cwm du'r Arddu, its traditional hotspot, despite exhaustive searches. A continuation of the survey from May to October 2016 located ten adults and one larva following 69 hours of search, with all adults recorded in Clogwyn Coch and the larva found under a stone in Cwm Glas Bach. The 2016 survey reinforces the suggestion that the beetle may be retreating to higher altitudes, perhaps as a consequence of climate change or other factors. Over the two year period, 16 beetles (11 adults and 5 larvae) have been found after more than 130 hours of search. As in 2015, no beetles were found in Cwm Idwal. 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 National Museums Liverpool National Museums Liverpool, 127 Dale Street, Liverpool, L2 2JH, England steve.judd@liverpoolmuseums.org.uk Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en Habitats and biotopes Protected sites Species distribution GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme snowdon beetle montane habitats chrysolina cerealis chalk grassland (calcareous grassland) NRW Thesaurus 2025-01-08 geonetwork.thesaurus.local.theme.converted_nrw-keywords There are no access restrictions to 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 GWYNEDD - GWYNEDD -4.14 -3.9309 53.0223 53.1461 2016-05-12 2016-09-30 National Museums Liverpool 2017. The status of the Snowdon Beetle Chrysolina cerealis on Yr Wyddfa in 2016. NRW Evidence Report No: 193, 18pp. Natural Resources Wales, Bangor. The status of the Snowdon Beetle Chrysolina cerealis on Yr Wyddfa in 2016 Database [B] Species records, which are held on the NRW Recorder 6 database. Documents [A] The final report in Microsoft Word and Adobe PDF formats https://registry.nbnatlas.org/public/show/dp122 WWW:LINK-1.0-http--link Data Download 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 Sampling techniques included visual searches and stone turning, undertaken by competent surveyors. Sampling techniques included visual searches and stone turning, undertaken by competent surveyors.