摘要
靖远松叶蜂（Ｄｉｐｒｉｏｎ ｊｉｎｇｙｕａｎｅｎｓｉｓ）是危害油松的重大森林害虫，１９９４年定为新种。该文对其形态、生物学特性、与环境因子的关系及主要天敌作了深入研究。此虫在山西省沁源，一般一年１代，以茧内预蛹（拟）在落叶层下越冬，成虫于６月间大量出现。少数有滞育现象，两年完成１代。雌雄性比为１：０．６，每雌产卵１２０粒～２２９粒，有孤雌生殖现象。幼虫共８龄，每头幼虫取食针叶６０根左右。纯林、疏林、阴坡虫口密度大。靖远松叶蜂病毒（ＮＰＶ）、白僵菌、金头赘寄蝇、大山雀等 ２２种天敌是制约该虫种群数量的重要环境因素。
Diprion jinngyuanensis, new species identified in 1994,is a major forest pest to damage the Chinese pine. Study was made in this paper on its morphology,biological characteristic,relation to environment factors,and major natural enemies. This pest generally occurs one generation a year in Qinyuan of Shanxi. Prepupas in cocoon overwinter in the litter, and masses of adults appear in June. Diapause is found in a few pests, which occur one generation in 2 years. Female/male rate is 1: 0. 6. A female lays 120 - 229 eggs, and parthenogenesis is found. The larva has 8 instars,and one larva feeds on about 60 needles. Population density is greater in pure or open forests than that in other forests. 22 sorts of natural enemies, NPV, Beauveria bassiana, great tit etc.,is the important environment factor to restrict the population of this pest.
出处
《山西林业科技》
2000年第2期10-16,共7页
Shanxi Forestry Science and Technology
基金
山西省自然科学基金!(961033)
国家"九五"科技攻关项目!(96-005-04-03-02)
关键词
靖远松叶蜂
生物学特性
发生规律
形态特征
森林害虫
Diprion jingyuanensis
morphology
biological characteristic
occurrence regularity
