Flight Activity and Population Trends of the Small Red-Belted Clear Wing Borer, Synanthedon myopaeformis (Borkh.) (Lepidoptera: Sesiidae), in Apple Orchards in Jordan

Experiments were conducted in Ash-Shoubak area from June 2003 to May 2005 on apple trees to study the trends of eggs and immatures of the small Red-Belted clearwing Borer (RBB), Synanthedon myopaeformis. Also, the flight activity of moths was studied from October 2004 to September 2005 using four pheromone dispensers brought from different companies. Results revealed that the insect has two generations per year. Eggs are laid singly beneath the bark. Six larval instars were recorded for this insect. The 4th through 6th larval instars could overwinter. Larvae of the second generation pupate in spring while larvae of the first generation pupate in summer. The pheromone dispenser brought from Agrisense company (UK) was the most active in capturing adults of the insect. However, the insect showed a flight activity from May to September and the highest peak of adult populations was recorded in June