The meadow spittlebug, Philaenus spumarius (Linnaeus) (Hemiptera: Aphrophoridae), is an important vector for the xylem-limited bacterium Xylella fastidiosa (Wells, Raju, Hung, Weisburg, Mandelco-Paul, and Brenner), which is associated with olive quick decline syndrome in southern Italy. The mouthparts of Hemiptera have important roles in host plant selection, feeding behavior and for vectoring pathogens that cause plant diseases. In this study, the functional morphology of the sensory structures located on the labium tip and precibarium of P. spumarius was investigated using scanning and transmission electron microscopy. The labium tip is composed of two symmetrical sensory complexes, each with five different types of sensilla: aporous sensilla trichodea type 1 and 2; uniporous sensilla chaetica type 1 and 2; and multiporous sensilla basiconica. The precibarium of P. spumarius has two kinds of sensory structures: bulbous sensilla and papillae sensilla. In particular, two groups of sensilla are located on the epipharynx: a distal group that consists of ten papillae sensilla and a proximal group composed of six papillae sensilla and two bulbous sensilla, while the hypopharynx has only two papillae sensilla. The involvement of these sensory structures in the context of feeding behavior and pathogen transmission is discussed.

中文翻译：

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与 Philaenus spumarius L. 的唇尖和 Precibarium 相关的感觉受体（半翅目：Aphrophoride）

草甸臭虫，鸬鹚(Linnaeus) (Hemiptera: Aphrophoridae)，是木质部限制细菌的重要载体苛养木霉（Wells、Raju、Hung、Weisburg、Mandelco-Paul 和 Brenner），这与意大利南部的橄榄快速衰退综合征有关。半翅目的口器在寄主植物选择、摄食行为和传播引起植物病害的病原体方面具有重要作用。在这项研究中，位于阴唇尖端和 precibarium 上的感觉结构的功能形态磷.泡沫使用扫描和透射电子显微镜进行了研究。唇尖由两个对称的感觉复合体组成，每个复合体有五种不同类型的感受器：多孔感受器 trichodea 1 型和 2 型；单孔感受器 1 型和 2 型；和多孔感受器basillaonica。的prebarium磷.泡沫有两种感觉结构：球状感受器和乳头状感受器。特别是，上咽部有两组感受器：远端组由十个感受器乳头组成，近端组由六个感受器乳头和两个球状感受器组成，而下咽部只有两个感受器乳头。讨论了这些感觉结构在摄食行为和病原体传播的背景下的参与。