菱紫叶蝉Macrosteles purpurata Kuoh etLu~*是菱角Trapa natans L.、莼菜Braseniaschreberi Gmel等水生经济植物的常发性害虫之一,江苏各地均有分布。该虫刺吸菱角、绿萍、莼菜叶、茎,并产卵在组织内,致成伤痕,使之生长滞缓,产量降低。菱紫叶蝉资料在国内外未见报道,我们于1983～1984年对该虫的生物学习性及防治方法进行了初步观察与试验,现将结果整理如下。 Macrosteles purpurata Kuoh etLu ~ * is one of the perennial pests of aquatic economic plants such as Trapa natans L., Braseniaschreberi Gmel and other vegetables, all distributed in Jiangsu. The insect punctatus water chestnut, green duckweed, razorberry leaves, stems, and spawn in the tissue, causing scars, so that slow growth, lower production. Rhododendron cicadas data were not reported at home and abroad, we 1983 ~ 1984 on the biological behavior of the insect and prevention and control methods were initially observed and tested, the results are summarized below.