مساهمة في دراسة بيولوجيا ذبابة اوراق الزيتون (Dasineura oleae F. Loew (Diptera ,Cecidomyiidae في الساحل السوري

The study showed the time of the appearance of the different insect stages and larval instars of Olive – leaf midge Dasineura oleae F. Löew during 2007 . The duration of the first larval instar was 13.9 ± 2.8 days ; the second larval instar enters Diapause for 180 - 210 days. The third larval instar was 23.9 ± 2.5 days and the duration of the pupal stage was 10 days under field conditions during the study period. Most of the damage caused by D.oleae occurs when adults emerge and attack inflorescences in April . One generation of Olive – leaf midge has been recorded in 2007.