以下为句子列表：
英文: Natural enemies of Hyphantria cunea (Drury) were investigated in Qinhuangdao, Hebei Province. Two parasitoids in larva stage, 12 parasitoids in pupal stage and 2 predators (Coccinella septempunctata and Tenodera sinensis) were found.
中文: 摘要通过对美国白蛾各个发育期的天敌进行调查与研究，发现除了捕食性天敌七星瓢虫、大刀螳螂等外，幼虫期有2种寄生性天敌、蛹期有12种寄生性天敌，这为保护和利用天敌、有效控制美国白蛾提供了依据。
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英文: Influence of chemical environment in pupal stage on the olfactory orientation of adults in Liriomyza sativae Blanchard
中文: 美洲斑潜蝇蛹期化学环境对成虫嗅觉定向的影响
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