<p>The emergence of Pandemis heparana adult males and their periods of fruit infestation of apple orchards in Iwate Prefecture were investigated. Adult males of the overwintering- and the first-generations were caught using pheromone traps from mid-June to late July and from mid-August to late September, respectively. Fruit damage caused by the overwintering- and first-generation larvae of this pest was observed in the apple orchards from mid-May to June and from late July to August, respectively.</p>