When filming in the New Forest I was often seeing these beetles fly past, often hearing them first as they do emit a loud buzz, and sometime I see females flying around rotten tree stumps to lay there eggs. they fly with there outer wing-case down with there membranous wings beneath to be used for flying.  they certainly look different from any other beetles I have seen in flight with quite a flash of bright green. It is a very exotic looking beetle, bright coloration of iridescent emerald green bronze colour.
The next time I returned to the New Forest I decided to try and find where they were feeding, after about an hour searching around the area from where I had seen the beetles flying I  found some wild rose bushes in a clearing in the forest, many of these beetles were visiting the flowers to feed and I stayed most of the morning taking pictures. I was using both 35mm Transparency film and my digital camera, growing through the centre of one rose bush was a wild honey suckle flower and occasionally the beetles would land on the flower, where they seem to bite the bottom of the flowers petal’s, so I was able to get some interesting pictures. This a lovely beetle, I read somebody on the web asking how to stop these beetle eating her roses, well they can eat my roses any day, all I get is black fly.

They are on the wing from May to October,
The larvae live in decaying plant material such as rotten tree stumps, wood, compost, and peat. the larvae are like earth worms and can make very good compost.