近年来，在瓜茄、豆类蔬菜上常发现一种白色小飞虫，成群结队，数之不尽，驱之不散，杀之不绝。菜农称之白翼仔、小白蛾。此虫就是白粉虱。白粉虱成虫和若虫吸食植物汁液，使叶片褪绿、变黄、萎蔫甚至枯死。分泌排泄的蜜露污染叶片和果实，引起煤污病的大发生，整株或部分变黑 In recent years, in the melon, beans, vegetables often found a white flying insects, in droves, the inexhaustible, perseverance, kill absolutely. Farmer called white wing Aberdeen, white moth. This insect is whitefly. Adults and nymphs of whitefly inhabit plant juice, causing the leaves to become chlorotic, yellowing, wilting or even dead. Secretion of excreted honeydew polluted leaves and fruits, causing a large coal pollution occurs, the whole plant or part of the black