【摘要】 本文报道了对桑萎缩病的两种媒介昆虫——凹缘菱纹叶蝉和拟菱纹叶蝉的研究成果,包括其形态特征、生物学特性、天敌、防治方法和预测预报。两种菱纹叶蝉在外观上不同,拟菱纹叶蝉体较大,带褐色,而凹缘菱纹叶蝉较小,带黄绿色。它们复翅后缘都有一个三角形大斑,当两翅合拢时呈菱形纹。两者的生活史比较相似,但其生活习性有很大差异。凹缘菱纹叶蝉具杂食性(已知有23种寄主植物),和寄生转移等习性,拟菱纹叶蝉食性单一,桑是主要寄主植物。它们一年发生四代,桑园内虫口密度第一代最高,第二、三代非常低,到第四代重新回升。天敌有卵寄生蜂、虫寄生菌和很多捕食性蜘蛛。防治上用敌敌畏、敌百虫、马拉硫磷、乐果、六六六、杀螟松等,为了提高防治效果可采用虫卵胚子发育阶段进行预测预报。更多还原

【Abstract】 The pr(?)sent paper deals with two Rhembis leafhoppers——Hishimonus sallatus and Hishimonoides sellatiformis, which are vectors of the mulberry dwarf disease. Their morphological characters, bionomics, predaters, control, measures and Prognosis are discussed.Their life histrories are similar, but the good habits are differente. H.sellatus is polyphagous, with 23 known species of host plants and H. sellatiformis chiefly feeds on heteroccium mulberry.They have both four generations in a year. The Population density on mulberry is the highest in the first generation descending a(?) the second and third generations and rising again during the fourth generation.Their natural enemies include egg perasites, parasific fungi and some predating spiders.In chemical control, DEP, DDVP, Malathioum, Rogor and Phoxic are effective.更多还原