榆梢小蠹Cryphalus sp.坑道系统的形成过程
Formation of the gallery system of Cryphalus sp. in Ulmus pumila L.
王荣,任利利,刘春兴,骆有庆**
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DOI：
作者单位：北京林业大学 教育部森林培育与保护重点实验室，北京100083
中文关键词：梢小蠹属，榆梢小蠹，生物学特性
英文关键词：Cryphalus, Cryphalus sp., biological characteristics
中文摘要：
在对榆梢小蠹Cryphalus sp.雌雄成虫形态特征细致比较的基础上，系统持续地研究了其坑道系统的形成过程。榆梢小蠹雌雄成虫个体大小差异不大，但雌雄次性征可见，主要区别在于额面是否有隆突和前胸背板后部鳞片多寡。主坑道内的成虫配比方式多为1雌1雄和2雌1雄，少有3雌1雄。榆梢小蠹的坑道系统形成可分为5个阶段，即侵入、召唤交尾、主坑道形成、产卵和子坑道形成，一般共历时40 d左右。
英文摘要： Morphological sexual dimorphism and the formation of the gallery system of the elm bark beetle Cryphalus sp. in Ulmus pumila L. were studied systemically. Male and female adults are similar in length, but secondary sexual characteristics are visible. The main difference lies in whether the frontal plane bulges and the number of scales on the notum of the metathorax. One male adult can have one to three mates at most, but it was difficult to find one male with three females in one gallery at the same time. The formation of this beetle’s gallery system is mainly divided into five stages，including invasion, courtship display and mating, formation of the main gallery, spawning and sub-gallery formation, and takes about 40 days to complete.