The Key Laboratory of Forest Protection, National Forestry and Grassland Administration, Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing, China.
United States Department of Agriculture, Agricultural Research Service, Beneficial Insects Introduction Research Unit, Newark, DE.
Environ Entomol. 2021 Feb 17;50(1):36-45. doi: 10.1093/ee/nvaa137.
An invasive population of spotted lanternfly (SLF), Lycorma delicatula White, was first noted in North America in Pennsylvania in 2014, and by September 2020 populations had spread to six additional states. To develop a biocontrol program to aid in the management of the pest, exploratory surveys for SLF natural enemies in its native range were carried out in 27 provinces and other administrative regions of China from 2015 to 2019. Naturally laid egg masses were collected and sentinel SLF egg masses were deployed to attract egg parasitoids, and yellow sticky traps were used to collect SLF nymphs to discover and determine the parasitism rates of nymphal parasitoids. Results show that SLF is widely distributed in China (22 provinces and regions) and that the population densities in northeast China are higher than in southern and western China. An egg parasitoid, Anastatus orientalis Yang (Hymenoptera: Eupelmidae), and a nymphal parasitoid, Dryinus sinicus Olmi (Hymenoptera: Dryinidae), were collected. Anastatus orientalis was reared from SLF eggs in seven provinces in China with parasitoid emergence rates ranging from 4.0 to 15.5% (or 17.6 to 37.3% if including only egg masses that had at least some parasitism). There were significant differences in parasitoid emergence rates between sites associated with factors including habitat and host plants. Dryinus sinicus was discovered in eight cities across six provinces. The percentage of SLF nymphs parasitized by D. sinicus were 31.1, 23.3, and 0% in Tai'an, Shandong Province, Beijing City, and Yan'an, Shaanxi Province, respectively. These two parasitoids are promising natural enemies that are being considered as potential biocontrol agents of invasive populations of SLF.
一种入侵性的斑衣蜡蝉（SLF），Lycorma delicatula White，于 2014 年首次在美国宾夕法尼亚州被发现，到 2020 年 9 月，其种群已扩散到另外六个州。为了开发生物控制计划来帮助管理这种害虫，从 2015 年到 2019 年，在中国 27 个省和其他行政区对 SLF 的自然天敌进行了探索性调查。收集了自然产卵的卵块，并部署了警戒 SLF 卵块以吸引卵寄生蜂，并使用黄色粘性诱捕器收集 SLF 若虫，以发现和确定若虫寄生蜂的寄生率。结果表明，SLF 在中国广泛分布（22 个省和地区），东北地区的种群密度高于南方和西部。收集到了斑衣蜡蝉的一种卵寄生蜂，东方啮小蜂（膜翅目：小蜂科），以及一种若虫寄生蜂，中华齿爪盲蝽（膜翅目：盲蝽科）。在 7 个中国省份，从 SLF 卵中饲养出了东方啮小蜂，寄生率在 4.0%到 15.5%之间（如果只包括至少有一些寄生的卵块，则为 17.6%到 37.3%）。寄生蜂的出现率在与栖息地和寄主植物等因素有关的地点之间存在显著差异。在六个省份的八个城市发现了中华齿爪盲蝽。在山东省泰安市、北京市和陕西省延安市，SLF 若虫被 D. sinicus 寄生的比例分别为 31.1%、23.3%和 0%。这两种寄生蜂是有前途的天敌，正在被考虑作为入侵性斑衣蜡蝉种群的潜在生物控制剂。
