Tonghua County is located in the Changbaishan mountain area where there are about 130 days yearly with average temperature below 0ºC and the lowest temperature can reach - 35ºC. To understand the natural survival of overwintering Lysiphlebia japonica, we observed the survival of overwintering parasitoids and carried out overwintering protection experiments.Originating text in Chinese.Citation: Gao, Junfeng, Yu, Kai. (1991). Protection of Overwintering Aphid Parasitoid, Lysiphlebia japonica [Hym.: Aphidiidae]. Chinese Journal of Biological Control, 7(4), 188-189
