New Species - Mint Leaf Beetle

I found a small (7-8mm) mettalic green beetle on my shirt and tried to id it. Eventually I decided it was a Mint Leaf Beetle (Chrysolina herbacea) but it didn't seem to have a lot of Welsh records and didn't recollect having any mint. However the id was supported by someone who knows beetles and I found (by smell initially) a large patch of mint just be the house. Case solv-ed.