Jiang Jia, Dietrich Christopher H, Li Can, Song Yuehua
School of Karst Science, Guizhou Normal University / State Engineering Technology Institute for Karst Desertification Control, Guizhou, Guiyang, 550001, China Guizhou Normal University Guiyang China.
Illinois Natural History Survey, Prairie Research Institute, University of Illinois, 1816 S. Oak St., Champaign, IL 61820, USA University of Illinois Champaign United States of America.
Zookeys. 2022 May 26;1103:1-23. doi: 10.3897/zookeys.1103.80787. eCollection 2022.
This study describes the fine structure of the mouthparts, antennae, forewings, and brochosomes of two leafhopper species belonging to the typhlocybine tribe Erythroneurini collected from the Karst area of Guizhou Province, southern China: , which prefers woody dicot hosts, and , which feeds on grasses. As in other leafhoppers, the piercing-sucking mouthparts consist of a conical labrum, a cylindrical three-segmented labium, and a slender stylet fascicle. The labrum of both species has no sensilla and the labium has several common types of sensilla, but the two species differ in the numbers, types, and distribution of sensilla and in other aspects of the surface sculpture of the mouthparts. The stylet fascicle has distinctive dentition on both the maxillary and mandibular stylets. The antennae of the two species differ in several respects, including the sensilla and sculpture of the scape, pedicel, and flagellum, as well as the degree of sub-segmentation of the flagellum. Except for the variable scaly structure and rounded protrusions on the surface of , the fine structure of the forewing surfaces of the two species are similar to those of other leafhoppers. Only small spherical brochosomes were found on the body surface of and . Similar studies of additional erythroneurine species are needed to determine whether differences in mouthpart and antennal fine structure may reflect adaptation to different host plant.
本研究描述了采自中国南方贵州省喀斯特地区的叶蝉族Erythroneurini两个叶蝉物种的口器、触角、前翅和微瘤的精细结构：偏好木本双子叶寄主的，以及以禾本科植物为食的。与其他叶蝉一样，刺吸式口器由一个圆锥形上唇、一个圆柱形分三节的下唇和一个细长的口针束组成。两个物种的上唇均无感器，下唇有几种常见类型的感器，但两个物种在感器的数量、类型和分布以及口器表面纹饰的其他方面存在差异。口针束在上颚和下颚口针上均有独特的齿列。两个物种的触角在几个方面存在差异，包括柄节、梗节和鞭节的感器和纹饰，以及鞭节的亚分段程度。除了的表面具有可变的鳞片结构和圆形突起外，两个物种前翅表面的精细结构与其他叶蝉相似。仅在和的体表发现了小的球形微瘤。需要对更多的Erythroneurini物种进行类似研究，以确定口器和触角精细结构的差异是否可能反映对不同寄主植物的适应性。
