Abstract
In order to obtain basic information for evaluating the suppression of the oriental fruit fly, Dacus dorsalis, with methyl eugenol baits, the percentage of flies recaptured by a methyl eugenoltrap was estimated in different seasons. The percent recapture clearly increased with the trap density to a maximum of about 60% in 9 traps per ha. If no increase took place when the density of the traps increased, the most efficient density of traps was considered to be 9per ha, with an interval of 33m between the traps. The mean number of recaptures was 0.21per day and the rate of recapture did not show conspicuous variations during the period March-August.
