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黄斑星天牛产卵于寄主韧皮部与木质部之间,卵在其中发育。卵期的长短与温度有关,日平均24.7℃,卵期18.9天;21.4℃时,卵期为23.4天,越冬卵期长达225天。计算出卵的发育起点温度为7.6℃,有效积温为321.3日度。根据刻槽与卵的形色变化,可将卵的发育分为四个阶段:初产期、中期、后期与孵化期。黄斑星天牛在幼虫蛀食的坑道内化蛹,日平均25.4℃,蛹期16天;21.8℃时,蛹期26天。计算出蛹的发育起点温度为18.24±1.04℃,有效积温为113.2±20.3日度。根据蛹的颜色变化可分为5级,各级蛹有一定的发育期。根据卵和蛹的发育起点温度、有效积温与期距法,可预测发生期。据当地被害杨树虫口及各虫态比,可预测1～3年成虫发生量。
Asclepias spawn in the host phloem and xylem between the eggs in which development. The length of the egg period is related to the temperature, with an average daily average of 24.7 ° C and an egg period of 18.9 days. At 21.4 ° C, the egg period is 23.4 days and the overwintering egg period is 225 days. Calculated the starting point for the development of eggs temperature was 7.6 ℃, the effective accumulated temperature of 321.3 days. According to the groove and the egg shape changes, the development of eggs can be divided into four stages: early, mid, late and incubation period. Maculata stellatus pupate in larvae eaten tunnel, with an average of 25.4 ℃, pupal period of 16 days; 21.8 ℃, pupa 26 days. The onset temperature of pupae was calculated to be 18.24 ± 1.04 ° C and the effective accumulated temperature was 113.2 ± 20.3 days. According to changes in the color of pupa can be divided into five levels, pupae at all levels have a certain period of development. According to egg and pupal development starting temperature, effective accumulated temperature and the distance method, can predict the occurrence. According to the local population of poplar insect population and insect population than can predict the occurrence of adult 1-3 years.