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本文对扶桑绵粉蚧Phenacoccus solenopsis Tinsley的重要天敌班氏跳小蜂Aenasius bambawalei Hayat(膜翅目:跳小蜂科)的雌雄形态特征、发育起点温度和有效积温、在长沙地区的理论发生代数进行了研究。结果表明:班氏跳小蜂是扶桑绵粉蚧若虫-成虫期寄生蜂;在28℃下,班氏跳小蜂一代的历期为17.8d;成虫、卵、幼虫和蛹的发育起点温度分别为:14.42、15.29、14.89、15.18℃,发生一代的发育起点温度为14.62℃;成虫、卵、幼虫和蛹的有效积温分别为87.92、9.74、68.41、75.84日·度,发生一代的有效积温为249.92日·度;由此预测班氏跳小蜂在长沙地区一年可发生9代。
In this paper, the morphological characteristics of male and female Aenasius bambawalei Hayat, an important natural enemy of Phenacoccus solenopsis Tinsley, developmental onset temperature and effective accumulated temperature, were used to study the occurrence of algebra in the Changsha area Study. The results showed that the growth of Beauveria bassiana was observed by nymphs of Fusarium sclerotiorum - adult stage parasitoid; the duration of the development of Bentley ’s Bees was 17.8 days at 28 ℃; the onset temperatures of adults, eggs, larvae and pupae were respectively : 14.42,15.29,14.89,15.18 ℃, the onset temperature of the first generation was 14.62 ℃; the effective accumulated temperature of adults, eggs, larvae and pupae was 87.92, 9.24, 68.41 and 75.84 days, respectively, and the effective accumulated temperature 249.92 degrees; thus predicting Bentley jumping bee can occur in Changsha for 9 generations a year.