一种油菜新害虫林芝喜马象(Leptomias sp.)的危害和形态特征

摘要

2014年在西藏林芝发现了一种危害白菜型油菜和甘蓝型油菜的新害虫——林芝喜马象Leptomias sp.(暂定名).该害虫属鞘翅目Coleoptera、象虫科Curculionidae、喜马象属Leptomias Favst;主要分布于西藏林芝八一镇;成虫为害油菜子叶和真叶,幼虫为害油菜根部.本文描述了喜马象甲的成虫、卵、幼虫、蛹4个虫态的形态特征.%A new pest Leptomias sp.was found on oilseed rape in Linzhi,Tibet,China in 2014.It belongs to Coleoptera,Curculionidae,Leptomias Faust.Field survey showed that Leptomias sp.mainly distributed in Bayi town,Linzhi,Tibet,China.The adults damaged cotyledons and leaves,and the larvae damaged roots.The morphological characteristics of adult,egg,larva and pupa were described.