伪角蜡蚧的生物学特性研究

Studies on biological characteristics of Ceroplastes pseudoceriferus Green

伪角蜡蚧(Ceroplastes pseudoceriferusGreen)严重危害多种园林植物,幼虫和成虫吸食寄主汁液,影响其生长和观赏价值。该虫在昆明一年发生一代,雌成虫4月中旬至5月上旬为产卵期,5月中旬始见初孵若虫,5月下旬为卵孵化高峰期,8月上旬进入成虫期,以雌成虫或老熟若虫越冬。准确预测该虫的卵期是防治该虫成败的关键,经恒温和室内变温饲养测定,卵的发育起点温度为9.46±1.23(℃)和10.33±1.01(℃),有效积温为296.94±22.10日度和319.04±20.29日度。其结果符合实际发生情况。

Ceroplastes pseudoceriferus Green is an insect seriously harmful to many of ornamental plants. Its larva and adult suck plant juice, resulting in the decrease of ornamental value of plants. It grows one generation a year in Kunming, the female spawns from middle April to early May, the nymph begins in middle May to late May,upto its fastigium, in early August the nymph develops the adult ,and in the end the female adult or old larvae overwinter.In order to control pest,the key to predict the egg duration accurately, Re.tilts from raising eggs at invariable and varying in door temperatures showed that,the necessary initial eggs development temperature（C） was 9.46 ± 1.23（℃）and 10.33 ± 1.01 （℃）, the effective accumulated temperature （K） was 2%.94±22.10 and 319.04 ± 20.29 day-degrees,respectively.