Institute of Zoology, Chinese Academy of Sciences, Chaoyang District, Beijing, China.
School of Biological Science and Medical Engineering, Haidian District, Beihang University, Beijing, China.
PLoS One. 2018 Mar 27;13(3):e0194995. doi: 10.1371/journal.pone.0194995. eCollection 2018.
Antennal sensory units in nymphs and adults of the spotted Lanternfly, Lycorma delicatula (White) (Hemiptera: Fulgoromorpha: Fulgoridae), an economically important plant pest, are studied with scanning electron microscopy. Sensilla trichodea / chaetica type recognition is based on their external morphology and ratio of their size to diameter. The flagellum Bourgoin's organ is a complex sensory unit with 2-3 internal sensilla coeloconica. During nymphal stages, the sensory surface available for a chemoreceptive function particularly increases with the number and size of sensilla placodea on the antennal pedicel. From first to fourth instar and to adult males and females, plate organ sensory surface is estimated to increase respectively by 33x, 68x and 125x (= 2.72 mm2 and 5.02 mm2 respectively for males and females). The most important increase (5x) occurs between second and third instar. In parallel, a distinctive pair of plate organs on the flagellum decreases in size from first to third instar, and disappears. Sexual dimorphism occurs in sensilla placodea in adults. Diversity, disparity and evolution of nymphal sensilla, and their sexual dimorphism in adults are discussed in the context of the species and planthopper behaviour.
触角感觉单位在若虫和成虫的斑灯蛾， Lycorma delicatula （白） （半翅目： Fulgoromorpha ： Fulgoridae ） ，一个经济上重要的植物害虫，用扫描电子显微镜进行研究。感觉纤毛 / chaetica 型识别是基于它们的外部形态和大小与直径的比例。触角 Bourgoin 氏器是一个复杂的感觉单位，有 2-3 个内部感觉 coeloconica 。在若虫阶段，感觉表面可用于化学感觉功能特别是增加与 sensilla placodea 的数量和大小上的触角花梗。从第一到第四龄期和雄性和雌性成虫，板器官感觉表面估计分别增加 33x ， 68x 和 125x （= 2.72 毫米 2 和 5.02 毫米 2 分别为雄性和雌性） 。最重要的增加 （5x ）发生在第二和第三龄期之间。同时，一对独特的板器官在触角上的大小从第一到第三龄期减少，并消失。性二型发生在成虫的 sensilla placodea 。讨论了若虫的感觉纤毛的多样性、差异和进化，以及它们在成虫中的性二型。
