Polyphylla fullo, commonly known as the Fuller's rose beetle, is a species of scarab beetle found in North America. It is characterized by its robust body and striking coloration, with a shiny metallic green or bronze appearance. The adults are primarily active during the summer months and are known to feed on the leaves and flowers of various plants, including roses. The larvae of Polyphylla fullo are white grubs that live in the soil and feed on plant roots.