The beautiful Tansy Beetle (Chrysolina graminis)
The project is a joint one between The National Trust, Buglife and the Tansy Beetle Action Group (TBAG), supported by Natural England. The beetle is currently known only in Britain from York and Woodwalton Fen, where a small number were rediscovered earlier this summer. The beetle’s only stronghold has been along a 30km stretch of the River Ouse, around York, where it mainly eats tansy (Tanacetum vulgare), a perennial herb which has given the beetle its name. It will also feed on water mint and gipsywort, which are both very abundant at Woodwalton and Wicken fens.