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观察悬铃木方翅网蝽Corythucha ciliata(Say)在上海的生活史和生活习性,并对其在上海的发生情况进行调查。悬铃木方翅网蝽在上海1年发生5代,第5代成虫于10月中下旬主要在悬铃木主干和支干的树皮下越冬,4月上旬越冬成虫上树为害,4月下旬开始产卵,5月上旬始见第1代若虫,第1代若虫期17～18d,世代历期约30d,7～8月间世代重叠现象明显。悬铃木方翅网蝽在上海11个区均有发生,株被害率最高的4条道路分别为徐汇区龙华西路、肇嘉浜路、松江区人民北路及长宁区延安西路,为害率达100%。为害程度最严重的的3条道路分别为松江区人民北路、长宁区延安西路和水城南路,虫情指数分别达95.6%、76.7%和72.2%。
To observe the life history and living habits of Corythucha ciliata (Say) in Shanghai and to investigate its occurrence in Shanghai. Platycladus angiosperms occurred in Shanghai for 5 generations in one year, the fifth generation of adults in mid-to-late October mainly in the main trunk and branch stems under the bark of winter, early April adult overwintering tree damage, spawning in late April, In the first ten days of May, the first generation nymphs were observed. The first generation nymphs ranged from 17 to 18 days, and the generational period was about 30 days. The phenomenon of overlay was obvious between July and August. Platycladus angiosperms have occurred in 11 districts in Shanghai. The four roads with the highest strain rate were Longhua West Road, Zhaojiabang Road, Renmin North Road in Songjiang District and Yan’an West Road in Changning District, respectively. The damage rate was 100% . The three roads with the most serious damage are Renmin North Road in Songjiang District, Yan’an West Road and Shuicheng South Road in Changning District, respectively, with insects index of 95.6%, 76.7% and 72.2% respectively.