萧氏松茎象生物学特性研究

研究表明:萧氏松茎象在湖南东安2年发生1代,以大龄幼虫在蛀道、成虫在蛹室或土中越冬。成虫主要靠爬行活动,飞翔能力弱,具假死性。成虫具夜出昼伏活动规律,即傍晚上树行取食和扩散等活动,早晨回到树干基部或土缝中。成虫需取食松枝作为补充营养。成虫不趋光,不趋糖、醋、啤酒、潲水气味。成虫个体比其它地方的要大。地被物为蕨类植物和灌木且覆盖度较大的林分危害严重。2年生以上松树均可受害,15年生以下松树林木死亡率较高。

Study on bionomics of Hylobitelus xiaoi

Hylobitelus xiaoi required two years to complete one generation in Dongan County in Hunan,and overwintered by the great age larvae in its bored path in the park and by prosopons in pupas chambers.Prosopons mainly depended on the crawling activity,soaring ability was weak,had plays dead the nature.Prosopons became active at night climbing up trees around sunset,and returning to the tree base or the earth seam in the following morning.Prosopons fed on the inner bark of host branches.Prosopons didn't hasten the light and didn't hasten the sugar, the vinegar,the beer,sprinkles with water the smell.Prosopons individual must be bigger than other places.The standing forest by the thing being ferns and shrubs also degree of cover being bigger was harmed seriously.The pine trees above two years live were possible to suffer injury,the mortality rate of the pine trees under 15 years live was higher.