一点拟灯蛾生活习性的初步观察

首次报道一点拟灯蛾AsotacaricaeBoisduval的生活习性 ,并描述其形态、寄主范围、成幼虫习性以及生活史。该虫在广州 1年发生 2代 ,以蛹在杂草、枯枝落叶以及其它缝隙等处越冬。翌年的 5月底至 6月成虫出现 ,第 1代发生在 5月底至 7月初 ,第 2代 (越冬代 )则从当年 6、7月到翌年 5月 ,幼虫 6或7龄 ,3龄前幼虫在叶背群集为害 ,4龄后分散取食。严重发生时 ,整叶被吃光 ,仅留主脉和侧脉。并提出了防治方法。

Preliminary observation on the life cycle of Asota caricae

Morphology, the ranges of host plants, the bionomics of adult and larva, and its life history of Asota caricae Boisduval are reported. The pest occurs 2 generations a year in Guangzhou, Guangdong Province. Pupae overwinter on the weed, dead branch and leaves, or with aperture in the wood. In later May to June of the next year, the adults emerge. The first generation occurs in later May to early July and the second generation from later June or July to early May of the next year. There are six or seven instars for the larvae. The first three instars eat mesophyll and gather in the back of leaves, and the fourth instar larvae begin to live separately. When in heavy infestation, the whole leaf was eaten up. The control methods are given.