Beetle Pollination. Oedemera nobilis, a beetle with a strikingly green metallic sheen, feeds on stamens of the wild Dog Rose Rosa canina. This rose is common in Europe, growing wild in hedge- rows and fields. The beetle O.nobilis, attracted to the stamens as a food source, seeks this flower and unwittingly collects pollen on its body as it chews the stamen heads. In this way, pollen is spread from flower to flower and the wild Dog Rose is pollinated.