齿茎长突叶蝉的生物学特性和防治

Bionomics of Batrachomorphus dentatus and its control

齿茎长突叶蝉BatrachomorphusdentatusKuoh是危害国槐(SophorajaponicaL.)、合欢(AlbiziajulibrissinDurazz)、臭椿(AilanthusaltissimaSwingle)、苦楝M(eliaazedaeachL.)等树木的新害虫。首次明确了该虫的寄主,记述其幼期形态特征、生物学特性、天敌种类。在山东商河1年发生2代,以卵在寄主枝条皮层内越冬。成虫寿命最长可达78d,羽化后17～21d开始产卵,产卵主要在傍晚前后进行。在若虫期用20%吡虫啉4000倍液和1.0%阿维菌素5000倍液喷雾防治,杀虫率分别达到98.5%和99.3%。

Batrachornorphus dentatus Kuoh is a newly-found pest damaging Sophora japonica L. , Albizia julibrissin Durazz, Ailanthus altissima Swingle and Melia azeclaeach L. in Shandong. The host plants information of this pest are given. The morphological characteristics, hionomics and natural enemies of the insect are described, and its control methods are suggested. It has two generations per year in Shanghe County of Shandong Province. Its eggs orerwinter in twigs of S. japonica. Adult stage may reach as long as 78 days. Adults start laying eggs in 17 - 21 days after eclosion, mostly in the evening. We used 20% imidaclopfid （diluted by 4 000 times） and abamectin （diluted by 5 000 times） to kill the nymphs of this pest and the effective control rates are 98.5% and 99.3% , respectively.