【摘要】 山西杉苞蚧PhysokermesshanxiensisTang是一种新发现的园林害虫。在山西中部严重危害白PiceameyeriRehd .etWils.为害轻者树势衰弱 ,重者整株枯死。本文首次描述和图示了各幼虫期虫态和雄成虫的形态特征 ,重描了雌成虫的形态。同时也观察了其生物学特性 ,结果表明 :该虫在山西中部 1年发生 1代 ,以2龄若虫在 1年生枝条和针叶上越冬 ;取食为害高峰在 4月上旬至 5月中旬 ;行两性生殖 ,每雌产卵 1 5～ 1 1 4 3粒 ,平均 6 0 2 3粒 ;天敌主要有异色瓢虫Harmoniaoxyridis(Pallas)的十八斑变型和二星瓢虫Adaliabipunctata(Linnaeus)。此外 ,本文还提出了有效的防治措施更多还原

【Abstract】 Physokermes shanxiensis \%Tang is a newly found pest of ornamental plants in China. In recent years it has caused serious damage to \%Picea meyeri\% in the central part of Shanxi Province, China. In this paper, its hosts, distribution and damage to \%Picea meyeri\% are reported; the morphology of immature stages are described and the bionomics is observed. The result shows that this scale develops one generation a year in Taigu county, Shanxi Province, overwinters on 1\|year old twigs and needles in second nymphal stage, adult females and males emerge in early\|April and late\|April respectively, and the feeding or damaging peak is from early\|April to mid\|May. They reproduce bisexually. Each female lays 15～1143 eggs, 602.3 on an average. The natural enemies include \%Harmonia oxyridis\%(Pallas) and \%Adalia bipunctata\% (Linnaeus), the former one is more important. Besides, the control measures are also proposed.更多还原