抄録
The overwintering sites and stages of Scirtothrips dorsalis HOOD were investigated both in a grape field and a greenhouse from November 1989 to April 1990 in Okayama. It is suggested that S. dorsalis adults migrate to the overwintering sites before the grape leaves die and fall in November. A few overwintering adults were collected from various sites including bark, litter and soil both in the greenhouse and the grape field throughout the winter.
