A large accumulation of several hundred actively flight-dispersing spotted lanternflies Lycorma delicatula was found on an isolated single telephone pole in a vineyard in Eastern Pennsylvania, USA. Many of the lanternflies flying across the vineyard very near to the pole turned toward and landed on it in an apparent visually mediated response to the tall vertical silhouette, whereas others flew past it. We video-recorded, digitized, and analyzed 481 tracks, of which there were 188 that were behaviorally classifiable with durations greater than 2 s. We found that lanternflies reacted to the 12.5-m-high pole by turning toward it when they were an average of 2.1 m away from it at an average height of 7.8 m. Those that did not react to the pole by turning toward it were at an average distance of 3.6 m from it at a height of 11.5 m. It appears that the object-vision capabilities of the lanternflies to this vertical structure that were intense enough to elicit a behavioral reaction to it were limited to a mean distance of 2.1 m during in-flight approach.

大量活跃分布于飞行中的斑点灯笼虫Lycorma delicatula的大量堆积是在美国东部宾夕法尼亚州的一个葡萄园中的一根孤立的单电线杆上发现的。在非常接近杆子的地方，穿过葡萄园的许多灯笼虫都转向并落在其上，以明显的视觉上对高高的轮廓的反应，而其他人则飞过它。我们对481条轨道进行了视频记录，数字化和分析，其中有188条可按行为分类，且持续时间大于2 s。我们发现，彩蝶对12.5米高的极点有反应，当它们离平均高度2.1 m，平均高度7.8 m时，转向极点。那些没有转向而对杆做出反应的杆与杆的平均距离为3.6 m，高度为11.5 m。