拉萨市杨雪毒蛾发生初报

Preliminary Report on Generation of Leucoma candida Staudinger in Lhasa

2019年对拉萨市杨雪毒蛾的发生危害进行了调查,发现:拉萨市杨雪毒蛾主要危害杨树、柳树,一年发生一代。4月中旬越冬幼虫开始上树为害,6月中旬成虫开始羽化,7月上、中旬为羽化高峰期。以2龄幼虫在柳树、杨树树缝或树下杂草中越冬。

The damage of Leucoma candida Staudinger were investigated in 2019 at Lhasa. The results showed: Leucoma candida Staudinger appears mainly on the poplar and willow and it had one generation a year in Lhasa. The overwintering larva began to damage in middle of April,adult started eclosion in the middle of June,the peak stage of adult eclosion appearedfrom early to middle of July. 2 thinstar larva wintered in the crack of poplar and willow,or in the weeds.