Several growth and development index of Arma chinensis were measureded at different indoor temperatures.The result showed that the effects of temperature on the incubation,the larva survival and the female fecundity of Arma chinensis were insignificant.However,the development period and adult survival were significantly affected by temperature.The development period was 42.3 days in 20℃ but 29.0 days in 30℃.

果梢斑螟(Dioryctria pryeri Ragonot)属蛀食类害虫,主要危害红松球果和嫩梢,导致红松枝梢枯死,种子减产.在掌握果梢斑螟生物学特性的基础上,通过开展果梢斑螟物理、生物、化学等防治措施的研究,总结出果梢斑螟安全、有效的综合治理技术,以确保林区支柱产业红松种实生产和红松果仁加工产也的健康、高效发展.

Dioryctria pryeri,an important pest that causes damage to cones of Pinus koraiensis,it is difficult to be controlled because of its cryptic characteristics.Control test by using six medicaments with high effect,low poison and without environment pollution and 40% omethoate under routine operation was conducted in seed orchard of Lushuihe Forestry Bureau,Jilin,China.The result showed that the suspended liquid of 20% triflumuron had made best effect with 88% killing rate.

Dioryctria pryer,as a borer with its larva made damage to tender shoot and annual cone of Pinus koraiensis,which has one generation a year at Lushuihe Forestry Bureau of Jilin Province,China.Its larvae in 3～4 instars overwinter for themselves in the cones,plucked traces and tender shoots,begin to damage from the fifth month of second year and pupation stage at end of the May to last ten-day of the June,and eclosion of imagines appear in middle of the June to first ten days of the July,same time to the egg stage.After incubation in end of the June to the middle of July,parts of the larvae begin to damage then turn into overwintering.