The durations of the influence of several insecticides for adult-stage Aphidius gifuensis Ashmead were evaluated based on the IOBC/WPRS guideline. The durations of the influence of spirotetramat, pyridalyl and pyrifluquinazon were less than 1 day, whereas those of malathion, acetamiprid, nitenpyram and emamectin benzoate were less than 7 days.