The Lyons Share

I noticed a little flea beetle eating Sam's Wallflowers a few weeks ago but was a little unsure whether I would be able to identify it. I decided to give it a go and I'm pretty confident I have got it to species. It was clearly a Phyllotreta but the only key I have for these is Joy. Cross referencing with the checklist though, it seems that Joy is mostly valid for Phyllotreta. Being greenish with a bronzy pronotum, along with a number of other features, suggests this is Phyllotreta nigripes (species 3867).