Blacklight traps were used successfully in commercial apple And cherry orchards of Wisconsin to survey fruit insect pests from 1957-62. The results of the last 3 years are given for adult populations of the codling moth, Carpocapsa pomonella (L.); redbanded leaf roller, Argyrotaenia velutinana (Walker); fruit-tree leaf roller, Archips argyrospilus (Walker); eye-spotted bud moth, Spilonota ocellana (Denis & Schiffermuller); destructive prune Worm, Mineola scitutella Hulst; and the cherry fruitworm, Grapholitha packardi Zeller. The effect of variations in the growing season on emergence, peak abundance, and seasonal distribution of a species; importance of these data for timing and number of applications necessary for adequate protection of the fruit; effect of the spray program used on the kind and number of species trapped in an orchard; and the possibilities of grower-operated blacklight traps for community use are discussed.