甘伪小眼夜蛾生物学特性与防治

甘伪小眼夜蛾Pseudopanolis kansuensis Chen系新种，在甘肃哈思山林区1年1代，取食油松Pinus tabulae formis Carr,叶和嫩皮，在土壤腐殖层或枯枝落叶层内化蛹越冬，翌年4月下旬至5月上旬为羽化盛期，5月上旬为产卵盛期，成虫具有越光性，幼虫受惊后吐丝下垂，幼虫5龄，2龄前食量小，抗性弱，是防治的最佳时机，6月中旬被龄幼虫期用25％灭幼脲Ⅲ号胶悬剂，2．5％功夫乳油，尿素混合液，飞机低容量喷雾，杀虫率可达88．5％。

Bionomics and control of Pseudopanolis kansuensis Chen

Pseudopanolis kansuensis feeds on needles and tender barks of Pinus tabulaeformis Carr..It has one generation a year in Hasishan Forest Area and overwinters as pupa in the humus soil.The adult emerges from the 1ast ten days of Apri1 to the first ten days of May the next year and 1ays eggs in the first ten days of May The adu1t is phototactic. Low vo1ume aeria1 spray of 25?nzoypheno1 urea III and mixture of 2.5%Cyha1othrin and urea can ki11 88.5%of the pest insect