Studies on the Migration and Control of Hishimonus sellatus

Hishimonus sellatus Uhler is one of the major vectors of jujube witche's broom disease. The author studied it's migration and control measures from 1986 to 1989. This pest has four generations per year in the west mountains of Shijiazhuang, Hebei Province., Most adults of the 4th generation migrate directly from jujube to pine (Pinus tabulaeformis Carr.) or orborvitae (Platycladus orientalis Franco) nearby from the middle of September to October every year to overwinter there. After winter, the surviving images begin to migrate to the white mulberry (Moras alba L.) and common papermlberry (Broussonetia papyrifera Vent) on about 20th April next year, and they reproduce one generation there. Then, they migrate to jujube and reproduce three generations from the end of May to the beginning of June. Experiments show that Meothrin is remarkbly effective for controlling this pest.