The South American Fruit Fly, Anastrepha fraterculus is one of the most important pest of temperate fruit crops. The effect of four new inseticide groups to replace organophosphate compounds for A. fraterculus control was evaluated under laboratory conditions (25 ± 3ºC, relative humity of 70 ± 10% and 12:12 L:D). Emamectin benzoate, etofenprox, imidacloprid, spinosad, thiacloprid and thiamethoxan were evaluated to control adults by contact and ingestion and against eggs/larvae inside apple fruits compared with fenthion and thrichlorphon. Emamectin benzoate was not efficient to control adults of A. fraterculus by contact and ingestion. Etofenprox, imidacloprid, spinosad and thiamethoxan were efficient to control adults by contact and ingestion being more toxic by ingestion. No new insecticide controlled eggs/larvae inside apple fruit while organophosphate compounds caused 100% of mortality of immature stages and adults. The new insecticides showed more potential to substitute organophosphate compounds in bait sprays for adult control.
south american fruit fly; neonicotinoids; toxic bait
