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云杉梢斑螟以幼虫危害青海云杉新生的树梢和嫩叶,以1龄幼虫在当年新梢基部和针叶中越冬。次年5月中旬开始活动并危害新梢,6月中旬化蛹,6月底始见成虫,7月上旬末、中旬初达羽化高峰。7月中旬为产卵盛期。7月下旬幼虫孵化,幼虫轻微危害后于9月中、下旬进入越冬状态。6月中旬,用3%高渗苯氧威喷雾,防治效果均在90%以上;用森得保可湿性粉剂喷雾,防治效果85%以上;羽化期可利用黑光灯诱杀成虫。
Spruce (Porphyrimus obscurus) larvae endanger the young tree spruce and young leaves of Qinghai spruce to the first instar larvae in the shoots and needles in the winter wintering. The following year in mid-May began activities and endanger the shoots, pupation in mid-June, the end of June saw adult worms, early July early mid-early reaches the peak of emergence. In mid-July for the spawning period. In late July larvae hatch, larvae slightly harmed after mid-September, late into the winter state. In mid-June, with 3% osmotic infiltration of phenoxyvitin spray, the control effect of more than 90%; with Moritsu WP spray, control effect of more than 85%; emergence can use black light to trap adults.