This manual contents the intructions to provide directions for trapping fruit flies of three economically important genera: Anastrepha spp., Ceratitis spp., Dacus spp. The procedures were established from a pilot fruit fly trapping system used en the Eastern Caribbeam islands of St. Vincent and the Grenadines and Grenada in 1986 and 1987. The procedures explain how to use two trap types: the McPhail and Jackson trap with four different lures. Yeast and Borax pellets, Trimedlure, Methyl Eugenol and Cuelure- to attract the various species of fruit flies. In any insect detection and survey programme, trapping is a means by which one can detect the existence of a pest in the adult stage in a certain area, Species and populations of fruit flies are detected by means of these specially designed traps, baited with lures. Traps have to be placed using the logical strategy so that they can provide the required information for a good and complete programme