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瓢虫是农田最常见的食蚜天敌。种类和数量多、分布广、在一定的季节和作物上可以起到控制蚜害的作用。近几年来以瓢治蚜的生物防治工作发展很快,效果显著。我们在以瓢治蚜的实践中发现有些瓢虫成虫种型很多,如异色瓢85种、二星瓢7种、龟纹瓢4种、多异瓢4种,但其幼虫和蛹只有一种型。为适应害虫天敌普查和更好地开展群众性利用瓢虫防治害虫的工作,为准确地予测予报瓢虫种类及其虫态的发生期、发生量,为协调防治打下更坚实的基础,现将常见六种瓢虫的幼虫和蛹的形态特征记述如下:
Ladybug is the most common predator in farmland. The species and the number of large, widely distributed, in a certain season and crops can play a role in controlling pests. In recent years, scopolamine biological control of the rapid development of a significant effect. In the practice of scoop-controlling aphids, we found that there are many species of adult ladybugs, such as 85 species of heterochromatic scoop, 7 species of scoop, 2 species of scorpion scoop and 4 species of scoop. There are only one species of larva and pupa type. In order to adapt to the investigation of natural enemies of pests and better carry out mass control of pests by ladybugs, in order to accurately report the occurrence and occurrence of ladybugs and their insect states, lay a more solid foundation for coordinated prevention and control, The morphological characteristics of larvae and pupae of six common ladybugs are now described below: