甘蓝薄翅螟的生物学特性
Bionomics of Crocidolomia pavonana
高 华；曾东强**；韦家书；邓国荣；黄大兴
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作者单位：广西大学农学院应用昆虫研究所 南宁 530004
中文关键词：甘蓝薄翅螟, 生物学特性, 蔬菜
英文关键词：Crocidolomia p avonana, bionomics, vegetables
中文摘要：甘蓝薄翅螟Cr ocidolomia pavonana ( Fabricius) 是广西南宁新发现的一种蔬菜害虫。该虫在当地年发生13 个世代, 卵期2.5~ 6.5 d, 幼虫期8.0~ 13.0 d, 世代历期18~ 39.5 d。整年均可发生为害, 为害峰期在4~ 6 月。主要寄主是甘蓝、白菜、芥菜、萝卜、油菜等。幼虫共4 龄, 以幼虫咬食寄主的叶片、嫩茎和花, 老熟幼虫在土表下化蛹。
英文摘要：Crocidolomia pavonana( Fabricius) is a newly- found insect pest in the vegetable field in Nanning, Guangxi Province. There are thirteen generations per year in Nanning with 18 to 39.5 days to complete one generation. The eggs last 2.5 to 6.5 days, larval stage 8.0 to 13.0 days, and the pupae 8.0 to 17.0 days. It occurred all the year round, and the peak occurrence was from April to June. The main hosts of the pest were broccoli, Chinese cabbage, leaf mustard, radish and rape. The larval stage has four instars. The larvae injured the leaf, tender stem and flower of its hosts, and it pupated in soil.