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在吉林省敦化林区发现梢斑螟为害红松树干,经鉴定暂称为松干梢斑螟(Dioryctria sp.)。通过对其生活规律的观察研究发现,该虫在吉林省敦化林区1年完成1代。以幼虫在被害部位越冬。4月下旬幼虫开始活动,潜入皮下为害韧皮部。7月上旬老熟幼虫开始化蛹,7月下旬成虫羽化;8月上旬新幼虫由树干伤口侵入,9月下旬后幼虫在被害部位越冬。该虫为次生性害虫。药剂防治试验结果表明,应用1.2%盐碱.苦参碱EC、48%乐斯本EC和20%丁硫克百威EC 100倍液,喷雾防治成虫,防治效果分别达到81.66%、83.50%和82.63%。
Dioscorea ophiophylla was found in Dunhua forest area, Jilin Province, and was temporarily identified as Dioryctria sp. Through the observation of the laws of their life, the study found that the insect in Dunhua District of Jilin Province 1 year to complete a generation. To the larvae in the victim site wintering. In late April, the larvae started to infiltrate and subcutaneously attack the phloem. In early July, mature larvae began to pupate, and adults became eclosion in late July. In early August, the new larvae invaded through the trunk wounds. After late September, larvae overwintered at the victim sites. The insect is a secondary pest. The results of the chemical control test showed that the control effect of the pesticide was 81.66%, 83.50% and 1.2% respectively after being sprayed with 1.2% saline, matrine EC, 48% Lesbian EC and 20% carbosulfan EC 100 times 82.63%.