Abstract Fruit Fly is a serious problem all over the world and research is carried out to develop methods for the insect pest. Most methods currently in use attract the male flies (McBride and Wood, 2000). However development of a technology using Effective Microorganisms indicated the possibilities of attracting female flies, which cause the most significant damage by laying eggs. This cost effective technique and results of this project are discussed. Introduction Melon Fly (Bacterocera cucubitae) was introduced to Hawaii from Japan in 1985. It has been recorded from more than 80 different host plants, including tomato, peppers, watermelons, cantaloupe, pumpkin, beans, eggplant, cucumber, squashes and passion fruit (Culliney, 2002). Eggs are inserted into fruit in bunches of 1 to 37 and hatches in 26 hours or more. Larvae feed in fruits; fruit develop water-soaked appearance and saprophytic organisms rot fruit. Adults feed on nectar, plant sap and juices from damage or decaying fruit. Adults have bright yellow stripes on the dorsum, and the secutellum is yellow. Wings have a dark brown stripe up the tip of the wing and other patterned areas on the wing (Marsden, 1979). Oriental fruit fly (Bacterocera dorsalis), a major fruit fly pest in Southeast Asia, was found on Oahu in 1946 and quickly spread throughout the islands. Over 90 plants have been recorded as hosts. In Hawaii, citrus, mango, papaya, guava, banana, and avocado are among the most important commercial crops attacked
