Association of Hymenoptera Parasitoid with Fruit flies (Bactrocera dorsalis Complex) attacking Guava fruits (Syzygium aqueum) in Gianyar, Bali Province, Indonesia

Fruit flies are considered a significant insect problem in Indonesia and worldwide as they prey on a wide variety of fruits and vegetables. The study found three types of fruit flies that attack water guava fruit in Gianyar Regency, namely Bactrocera albistrigata, Bactrocera carambolae and Bactrocera dorsalis. The highest percentage of attacks on water guava fruit was found in Gianyar District at 85.00%. The abundance of B. albistrigata species had the highest population with an average value of 353.4 individuals. Three species of parasitoid were found to be associated with fruit flies that attack water apple plants in Gianyar Regency, namely Fopius arisanus, Diachasmimorpha longicaudata, and Opius sp. Species F. arisanus was the highest parasitization rate of 14.28% and is an effective natural enemy candidate in controlling fruit fly attacks on water apples. The study suggested that the different host plants of fruit fly species should be further evaluated as an effective control technique and early warning for farmers and policymakers.