The olive fruit fly (Bactrocera oleae, Dacus oleae) is a species of fruit fly which belongs to the Dacinae subfamily. It is a phytophagous species, whose larvae feed on the fruit of olive trees, hence the common name. It is considered a serious pest in the cultivation of olives. The olive fruit fly received notoriety in the US in 2009 when funding for research designed to prevent infestation sponsored by Representative Mike Thompson received public attention as alleged federal pork barrel spending from persons who failed to understand its agricultural purpose.