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荷缢管蚜Rhopalosiphum nymphaeae(Linnaeus)属蚜科蚜亚族,为害荷花等多种水生植物。近年来,随着细绿萍Azolla fiticuloldes Lamk养殖面积的不断扩大,各地都相继发现为害并逐年加重,现已成为绿萍养殖的一种新害虫。作者于1979—1981年对该虫的寄主、生活习性、防治办法等作了初步研究,结果如下。 一、寄主及为害状 经室内、外接种调查表明,此虫在浙江温州
Rhopalosiphum nymphaeae (Linnaeus) is a subfamily of aphids belonging to the family Aphididae, which is responsible for various aquatic plants such as lotus. In recent years, with the expanding area of Azolla Fiticuloldes Lamk growing, all over the world have been discovered and increased year by year, and now it has become a new pest of Greenpea breeding. The author made a preliminary study on the hosts, living habits, prevention and treatment of the insects from 1979 to 1981, and the results are as follows. First, the host and damage through indoor and external investigation showed that the insects in Wenzhou, Zhejiang