الحصر و الوفرة الموسمية لطفيليات ذبابة ثمار الزيتون Diptera : Trypetidae)‎ Bacterocera (Dacus)‎ oleae Gmel)‎ في مصر

الملخص EN

Olive is otic of the important crops in Egypt, which is liable to be attacked by many species of inscct pests.

The olive fruit fly Bacterocera (Dacus) oleae Gmel.

(Diptera: Trypetidae) is the most important pest.

This study was canied out to survey and study seasonal abundance of pest’s parasitoids in Egypt Periodical samples of infested fruits were collected for two successive seasons: 1997/98 and 1998/99.

Infested fruits were kept under laboratory conditions until emergence of parasitoid adults.

The survey revealed eight parasitoid spccies on the immature stages of the fly (larvae and pupae), all belong to order Hymcnoptera: Cyrtoptyx latipes R., Cyrtoptyx sp., Eupelmus sp..

Eurytoma sp..

Eurytoma martelli M., Macronettra sp., Pnigalio agraules W.

and Opius concolor S.

The first seven species were recorded for the first time in Egypt.

The eight parasitoid species were recorded in the fresh fruits, while only six were recovered from the fallen fruits.

All species were rccordcd during the period from July to November.

Mean percentages of parasitism reached 38.9 and 10.8 % by the two species: O.

concolor and P.

agraules.

respectively.