minute insect that feeds on plant juices; related to scale insects
The whiteflies, comprising only the family Aleyrodidae, are small hemipterans. More than 1550 species have been described.
例句与用法
1.
Biological behaviour and control measurement to greenhouse whitefly 温室白粉虱的生物学特性及防治措施
2.
Study on chemical constituents of volatile oil from whitefly syngonium podophyllum schott 白蝴蝶挥发油的化学成分研究
3.
The cotton bollworm had not been the domiant pest in transgenic bt cotton field , but the number of aphids , ded spider mite , whitefly and so on , increased obviously 害虫优势种是棉铃虫、花蓟马、棉蚜、朱砂叶蜻，天敌优势种类为蜘蛛类、七星飘虫、龟纹飘虫。
4.
In this dissertation , the interactive system of delphastus catalinae ( horn ) , its preys and competitor was studied , including comparison between alternative preys and natural prey consumed by d . catalinae ; the system of d . catalinae and its preys ; morphology comparison between d . catalinae and its competitor serangium japonicum chapin ; biology , ecology and predation of s . japonicum ; and also the interspecies competition between d . catalinae and s . japonicum . 1 . besides whitefly pests , d . catalinae could also feed on two species of alternative preys : tetranychus nr Fijiensis和桃蚜myzuspersicae ( sulzer ) ，并在实验室条件下，以自然猎物烟粉虱bemisiatabaci为对照，研究了替代猎物对小黑瓢虫的发育、存活、繁殖及对实验种群增长的综合影响，结果表明： ( 1 )小黑瓢虫以蚜虫为猎物时，成虫不会产卵，但可延长成虫的寿命；以红蜘蛛为猎物时，成虫可产卵并可完成整个世代。
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