黄钩蛱蝶生物学的初步研究

STUDIES ON THE BIOLOGY OF POLYGONIA C—AUREUM LINNAEUS

黄钩蛱蝶是药用植物葎草的重要食叶害虫.在南昌一年发生5代为主,部分6代,少数7代,世代重迭,以未交配的成虫过冬.10月初羽化的成虫,当年不再交配和产卵,故越冬成虫即包含了五六七代成虫.受高温干旱的影响,夏季和秋初雌虫的产卵量及卵的孵化率明显低于春季和夏初.因此五六月份为全年发生的为害烈期.

Polygonia c-aureum Linnaeus is a major leaf pest of Humulus scandens(Lour.)Merr.which is used for medicine.There are mainly 5,partly 6 and even 7 generations per year inNanchang,Jiangxi Province,and the generations are overlapped.It overwinters at the stageof unmated adults,and the adults which emerge in early october or later donor mate andlay eggs in the same year,so the overwintering adults include the adults of the fifth,sixthand seventh generations.Because of the high temperature and dry weather,the quantity ofeggs of each female adult and the ratio of hatched eggs are lower in summer and early au-tumn compared with those in spring and early summer.And this is why May and fune arethe major periods of occurence and damage.