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本文记述了深点食螨瓢虫Stethorus punctillum weise的形态特征和主要生物学特性;研究了该虫的日食量以及在变温和恒温条件下各虫态的发育历期;得出了各虫态的发育起点和有效积温。在室内饲养条件下,全幼虫期平均每日取食柑桔叶螨各虫态271.9头(粒);雌成虫平均每日取食183.4头(粒);雄成虫平均每日取食166.9头(粒)。在28℃和32℃恒温条件下,完成一代分别为49.05±2.6天和40.55±1.8天。其全世代的发育起点为8.92℃,有效积温为935.87日度。
In this paper, the morphological characteristics and main biological characteristics of Stethorus punctillum weise were described. The solar eclipse amount and the developmental period of each insect state were studied under the condition of variable temperature and constant temperature. Developmental starting point and effective accumulated temperature. Under indoor feeding conditions, the average number of larvae fed on the whole larvae was 271.9 (grain) per spider mites. The female adults consumed 183.4 heads per day (average), while the male adults ate an average of 166.9 heads per day grain). Under the constant temperature of 28 ℃ and 32 ℃, the generation of complete generation was 49.05 ± 2.6 days and 40.55 ± 1.8 days, respectively. Its generational starting point for the entire generation was 8.92 ° C and its effective accumulated temperature was 935.87 days.