| Diprion jinguanensis,new species identified in 1994,is a major forest pest to damage the Chinese pine. In order to better understand the breeding characteristics of Diprion.jingyuanensis Xiao et .Zhang and provide the theoretical basis for its pest control techniques,mating behaviors were studied. The males emerged from 8:00 a.m to 1:00 p.m., with the peak from 9 to 10 a.m , which accounted for 72.6% of the total. Females emerged from 9:00 to 15:00, peak time from 11 to12 a.m, accounted for 76.2 % of the total . The newly emergenced male and female were pared and the mating behaviors were observed. It was found that the individual male and female had obvious choice when mating, some could only mate with specific ones. The mating rate of females was 56.39%,and that of males was 35.42%. The measure of mated and non-mated male and female body length and head width show that there were no significant differences between this two groups. Diprion Jingyuanensis could mate several times. For females the highest was 9 times mated more than 4 times accounted for 26.7 %, 2 to 3 times 36.7 %, only once 30 %, unmated was 6.7%. The highest mating time for male was 4 times, which occupied 3.3%, 2 to 3 times accounted for 6.7%, once 50%, unmated 40%.The mating lasted form 19 minutes to 58 minutes.Both sexs began mating from first day of emergence . The mean longevities of the female and male were 4.1 days and 2.4 days.Through the scanning electron microscope of mating and without mating Diprion jingyuanensis and found that females Diprion jingyuanensis mating and non-mating egg production are variable length with fold growth, the existence of density in the fold different from the mating and no-mating of . Diprion jingyuanensiswe study on Diprion jingyuanensis sex pheromone mass trapping and mating disruption to prevention and treatment Diprion jingyuanensis experiments on Ha si Shan of Gansu Province in 2008, compared the treatment areas and control areas Diprion jingyuanensis adult, larvae pest density, the pest of rate. The results showed that the large number of trapping and disorientate be able to achieve a certain degree of control, adult, larva, cocoon to a different extent than that of the control zone has been reduction.The results show that the sex pheromone trap and disorientate to prevention and treatment Diprion jingyuanensis experiments on Ha si Shan of Gansu Province,it has to to achieve a certain degree of control adult were reduced 41.86%, 33.33%, 17.28%.of mating disruption district the number of eggs is no significant difference with the control area, a large number of egg mass trapping areas were reduced 35.71%, 50.00%, 7.15%, 47.50%, 25.00%, 40.00%, 13.64%, 0%, 13.64%. mating disruption district to reduce egg mass were 4.76%, 2.50%, 0%.Ratio of damaged of tabulae and density of larvae of species in August, further verify a large number of adults to the trapping and the effect - a large number of trapping areas, mating interference zones as compared with the control area are reduced to varying degrees Trapping in the affected areas and a large number of larvae significantly reduce the number of light areas to reduce the significantly difference, a large number of trapped ratio of damaged rate zone has a significant difference. the larvae reduce the number of significant differences. in light areas and hardest areas The disaster area of mating disruption formed a significant ratio of damaged rate has a very significant difference. Larvae of a large number of trapping areas were reduced 31.33%, 42.03%, 1.99%, 35.98%, 17.36%, 31.20%, 53.10%, 16.72%, 40.24%. the ratio of damaged late of a large number of trapping areas reduced 26.37%, 39.56%, 35.16%, 32.35%, 25.00%, 22.06%, 36.84%, 33.33%, 26.32% larvae reduced to 9.87% 36.69%, 31.91%of mating disruption distract; ratio of damaged rate reduce 20.88%, 22.06%, 28.07%.of mating disruption district.
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