Efficacy of some insecticides against the small red belted clearwing borer, Synanthedon myopaeformis (Borkh.) (Lepidoptera: Sessiidae), in apple orchards in Jordan.

Experiments were carried out in Ash-Shoubak on 10-year old apple trees, Malus domestica cv. Mondial Gala grafted on M26 that were infested with the small red belted clear wing moth. The efficacy of five insecticides was tested against this insect by either spraying or injecting the infested trees. The tested insecticides were; Comodor (imidaclorpid), Chlormezyl (chlorpyrifos & dimethoate), Avaunt (indoxacarb), Thvap (cyromazine) and Actellic (pyrimiphos-methyl). All of these insecticides were applied in 2003 and 2004 except that of Actellic that was applied only in 2004. Data on larval mortality have been observed after 2, 7 and 14 days of insecticides applications. Results showed that spraying or injecting Chlormezyl or Actellic resulted in a significant overall efficacy against the larvae of S. myopaeformis. It was also observed that injecting Comodor improved its overall efficacy against the insect.