The photo depicts a Golden Rose Chafer which happened to be in my garden. 20 millimetres long, that has a metallic structurally colored green and a distinct V-shaped scutellum , it may show several small, irregular, white lines and marks. The underside of the beetle has a coppery colour, and its upper side is sometimes bronze, copper, violet, blue/black, or grey.This beautiful creature is actually bad for roses ( but I didn't kill them ).