Dusting with fluorescent-colored powders was a durable and reliable method of markingColladonus montanusleafhoppers and did not reduce their longevity or subsequent recapture. The percentages of markedC. montanuscaught on yellow sticky boards placed in a cherry orchard in autumn, spring, and summer were 9, 21, and 1% respectively. Catches generally decreased exponentially with distance from the release point and with time after release. Captures were prolonged over several weeks after the autumn release but diminished rapidly after warm-weather releases.