Chrysolina haemoptera, commonly known as the bloody-nosed beetle, is a small insect belonging to the family Chrysomelidae. It is characterized by its vibrant metallic green coloration and distinctive red markings on its elytra. This beetle is primarily found in Europe and feeds on various plants, particularly those belonging to the family Asteraceae. The name "bloody-nosed beetle" is derived from its defensive behavior of exuding a red fluid from its mouth when threatened.