白石蒜(半翅目:Fulgoridae),有斑点的灯笼,是一个单电压,韧皮部喂养,美国的多食和入侵昆虫。尽管该物种的主要宿主是Ailanthusaltissima(Mill。)Swingle,天堂之树,L.delicatula也以许多其他植物物种为食,包括栽培的葡萄树。随着这个物种的继续传播,重要的是要开发有效的管理工具。这里,我们评估了树果管理计划中常用的4种杀虫剂的残留功效:dinotfuran,联苯菊酯,西维因,和噻虫嗪.首先,所有移动生命阶段(早期,晚年,和成虫)的白头乳杆菌暴露于施加在玻璃或A.altissima树皮表面的干杀虫剂残留物(18小时)中1小时。虽然在1小时暴露期之后立即检测到一些死亡率,对于暴露在玻璃和树皮表面上的所有材料和生命阶段,在24小时内发生了100%的死亡率。为了评估这些材料的较长残留活性,将成虫L.delicatula引入装有用相同的单独杀虫剂处理的A.altissima树的笼子中,并暴露于18小时或7天大的残留物6小时。配对,未处理的A.altissima用作对照。在这些生物测定中,噻虫嗪18h龄残留物的48h死亡率达到95%,联苯菊酯和dinotfuran达到100%。七天龄的联苯菊酯和呋喃丹残留物再次产生100%的死亡率,而噻虫嗪导致58%的死亡率,西维因的产量仅为13.3%,与对照没有显着差异。这些结果清楚地证明了特定杀虫剂应用作为管理工具对黑藻的功效。
Lycorma delicatula White (Hemiptera: Fulgoridae), spotted lanternfly, is a univoltine, phloem-feeding, polyphagous and invasive insect in the United States. Although a primary host for this species is Ailanthus altissima (Mill.) Swingle, tree of heaven, L. delicatula also feeds on many other plant species, including cultivated grapevines. As this species continues to spread, it is important to develop effective management tools. Here, we evaluated the residual efficacy of 4 insecticides commonly used in tree fruit management programs: dinotefuran, bifenthrin, carbaryl, and thiamethoxam. First, all mobile life stages (early instars, late instars, and adults) of L. delicatula were exposed for 1 h to dry insecticide residues (18 h old) applied to glass or A. altissima bark surfaces. While some mortality was detected immediately following the 1 h exposure period, 100% mortality occurred within 24 h for all materials and life stages exposed on both glass and bark surfaces. To evaluate longer residual activity of these materials, groups of adult L. delicatula were introduced into cages containing A. altissima trees treated with the same individual insecticides and exposed 6 h to residues that were 18 h or 7 days old. Paired, untreated A. altissima served as controls. In these bioassays, 48 h mortality for 18 h old residue reached 95% for thiamethoxam and 100% for bifenthrin and dinotefuran. Seven-day-old bifenthrin and dinotefuran residues again yielded 100% mortality, while thiamethoxam resulted in 58% mortality, and carbaryl yielded only 13.3% and was not significantly different from the control. These results clearly document the efficacy of specific insecticide applications as management tools against L. delicatula.