Lucilia caesar is a member of the fly family Calliphoridae commonly known as blow flies. L. caesar is commonly referred to as the common greenbottle, although this name may also refer to L. sericata. The adult flies typically feed on pollen and nectar of flowers. The larvae feed mainly on carrion.
The term «Blowfly» comes from meat being «fly blown» since these flies lay eggs in dead carcases very soon after death – in fact the development stage of eggs or maggots is one of the methods to determine time of death. The maggots were also used medicinally since they prefer to eat dead flesh than live flesh.