(1华南农业大学资源昆虫学系教育部生物防治工程研究中心广州510640；
2中国热带农业科学院环境与植物保护研究所海南省热带农业有害生物检测监控重点实验室儋州571737；
3中国农业科学院植物保护研究所植物病虫害生物学国家重点实验室北京100081)摘要桉树枝瘿姬小蜂Leptocybe invasa Fisher & La Salle是桉属（Eucalyptus）植物的重要枝叶害虫。自2007年在我国发现以来，对广西、海南及广东地区的桉树种植已造成严重危害。本文在野外调查的基础上，研究了海南和广东地区共5种桉树上桉树枝瘿姬小蜂的虫体大小、寿命及怀卵量。结果表明，桉树品种能够显著影响桉树枝瘿姬小蜂的虫体大小；用40%蜂蜜水进行补充营养时，不同寄主植物上桉树枝瘿姬小蜂雌成虫的寿命差异显著，而桉树枝瘿姬小蜂雄虫在不同寄主间无显著性差异；不同寄主植物上桉树枝瘿姬小蜂雌成虫的怀卵量不同，并且随着日龄的延长，其怀卵量呈现上升的趋势。
关键词桉树枝瘿姬小蜂, 寄主植物, 虫体大小, 寿命, 怀卵量

Effect of host plants on adult biology of Leptocybe invasa ZHU Fang\|Li1HAN Peng\|Fei1REN Shun\|Xiang1**PENG ZhengQiang2WAN FangHao3
（1Department of Entomology, South China Agricultural University, Engineering Research
Center of Biological Control, Ministry of Education, Guangzhou510640, China;
2Environment and Plant Protection Institute, CATAS, Key Laboratory for Baleful Biology Detection
and Monitor of Tropical Agriculture of Hainan Province, Danzhou571737, China;
3Institute of Plant Protection, Chinese Academy of Agricultural Sciences, The State Key Laboratory for
Biology of Plant Diseases and Insect Pests, Beijing 100081, China）

AbstractThe blue gum chalcid, Leptocybe invasa Fisher & La Salle, is a serious pest of Eucalyptus spp. This pest was described as a new genus and species in 2004 It was first recorded in Guangxi Province in 2007, after which it spread to Hainan and Guangdong Province. This paper describes the adult biology of L. invasa on different host plants. There are significant differences in the body size of L. invasa on different hosts and the lifespan of female, but not male, wasps provided with 40% honeywater solution was significantly different to that of the control. The number of fertile eggs of female wasps on different hosts was also different, and tended to increase with increasing lifespan.
Key wordsLeptocybe invasa, host plant, insect body, longevity, number of impregnated eggs