| This tree so that Catalpa bungei C.A.Mey damage is a major pest of trees - Catalpa borer as the research object, its disaster food chain and the sex pheromone based monitoring techniques are studied.Catalpa bungei of different varieties of moth hazard survey results show that:The destroyed situation of gold is the most serious and that of Catalpa fargesii Bureau.is the lightest.There are significant differences with a significant level of 0.05 ; in the 5 Catalpa tree species of Tai Kang, light gold leaf Catalpa Catalpa and the growth speed, Catalpa fargesii Bureau. and the growth rate of clone slower. Huaiyang Region 5 Catalpa tree species, light leaf catalpa grew the fastest, gray mandshurica slowest growth rate. in the 5 Catalpa tree species of Zhengzhou Region, the growth of gold mandshurica grew the fastest.however, the rate among the remaining species had no significant difference.The results of mulching film showed that: when we observed the soil covered by Catalpa tree,the surrounding soil, and even rummage them after the overwintering in the peak period of emergence of Omphisa plagialis , we found no Omphisa plagialis'larvae, pupae or adults of any states. So we can initially think that the soil of Omphisa plagialis'root is not the Omphisa plagialis'overwintering sites.Omphisa plagialis in different regions of parasitism in the preliminary survey showed that: The egg is attached to the gauze placed in the forest several days after the recovery, put under the microscope and found no egg parasitoids inside, Catalpa larvae hatched after all has not See a parasitic wasp hatched. Catalpa moth parasitoids may not be parasitic Catalpa borer eggs. In Zhengzhou, Xuchang, Loening 3 to 5 were investigated in different types of parasitic wasps. One area in Zhengzhou, yellow orbital away from the edge of Ichneumonidae Trathala flavoorbitalis (Cameron) is the Catalpa tree in the region major parasitic wasps. Their Catalpa moth larvae of the overwintering generation and the first generation of both parasitism.Overwintering larvae were parasitized was 33.62 %, the first generation of larvae parasitized was 20.27%. Overwintering generation is higher than the first generation of parasitic parasitism. The results of the research which about how Omphisa plagialis sex pheromone extracts trap Omphisa plagialis showed that: catalpa moth emergence of the peak was in the 16:00-22:00 pm which was in the back halt of light cycle and the front halt of dark cycle,but there was no Omphisa plagialis emergence from midnight 0:00 to 10:00 am . Catalpa overwintering and first generation of the number of moth emergence light cycle less than dark cycle ,whose emergence percentage were 58% and 60%. the day when Omphisa plagialis was emergence ,the female moth would come into sexual maturity,and begin activities in the dark cycle . Omphisa plagialis moths mating peak in the first 4-5 hours of dark cycle and the courtship time was most of 21:00-3:00. courtship behavior to the day after emergence and the first day was of the most intense and began to fall from the third day. Students experience in the indoor test, the distance lure 5 cm, 10 cm, 15 cm Department moths gland extracts of female moths response rates were 60%, 35% and 15%, there is no response from further away. Trapping experiments in living worms, the first day of trapping volume up, after over time gradually decreased the amount of trapping, till the sixth day of almost no living male moths are lured to.
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