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伊尼诺多足摇蚊Polypedilum illnoense Hau-ber属双翅目摇蚊科,其幼虫俗称萍丝虫(图)。近年来,跃为绿萍的主要害虫。 据调查,萍田内摇蚊科的幼虫有多种,但严重为害的仅是伊尼诺多足摇蚊一种。为了探明其生物学特性和防治措施,我所从1977年冬季开始对该虫进行了研究,现将三年来的结果简介如下。 一、生活史 1,越冬情况 该虫主要以老熟幼虫在萍体上越冬,部分以3、4龄幼虫越冬。在越冬期间,一有温暖天气就会取食发育。春分前后开始活动,清明前后化蛹,不久陆续羽化。
Polypdilum illnoense Hau-ber is a member of the family Diptera, and its larvae are commonly referred to as pinworms (Figure). In recent years, the main pests jumped to Greenpeace. According to the survey, there are many kinds of larvae in the Pingtienke mosquito family, but only one species of Inchodorus mosquito is severely damaged. In order to ascertain its biological characteristics and control measures, I studied the insect from the winter of 1977, the results of the past three years are summarized as follows. First, the life history 1, the winter conditions The insects mainly larvae in Pingtong overwinter, part of the 3rd and 4th instar larvae wintering. During wintering, warm weather will feed on development. Before and after the vernal equinox began activities, chingming pupation, soon after another eclosion.