Sevarika Milos, Rossi Stacconi Marco Valerio, Romani Roberto
Department of Agricultural, Food and Environmental Sciences, University of Perugia, 06121 Perugia, Italy.
Research and Innovation Center, Fondazione Edmund Mach, S. Michele all'Adige, 38098 Trento, Italy.
Insects. 2021 Mar 9;12(3):231. doi: 10.3390/insects12030231.
is a gall-inducing insect, which can cause significant damage on plants of the genus Mill., 1754. Antennae and ovipositor are the main sensory organs involved in the location of suitable oviposition sites. Antennal sensilla are involved in the host plant location, while ovipositor sensilla assess the suitability of the ovipositional bud. On both organs, diverse sensillar organs are present. Here, the distribution and ultrastructural organization of the sensilla were investigated by scanning and transmission electron microscopy. The antennae of are filiform and composed of 14 antennomeres, with the distal flagellomere bearing the highest number of sensilla. On the antennae, 6 sensilla types were found; sensilla chaetica, campaniformia, coeloconica-I, coeloconica-II, trichoidea and placoidea. The sensilla placoidea and trichoidea were the most abundant types. On the external walls of the ovipositor, gustatory and mechanoreceptive sensilla were observed. Internally, the egg channel hosted two additional sensory structures. The putative functional role of each sensilla in the context of insect's ecology is discussed as well as the ovipositional mechanism used by this insect.
是一种形成瘿瘤的昆虫，会对1754年命名的Mill.属植物造成严重损害。触角和产卵器是参与寻找合适产卵地点的主要感觉器官。触角感器参与寄主植物定位，而产卵器感器评估产卵芽的适宜性。在这两个器官上都存在多种感觉器官。在此，通过扫描电子显微镜和透射电子显微镜研究了感器的分布和超微结构组织。[昆虫名称]的触角呈丝状，由14节触角节组成，最远端的鞭节上感器数量最多。在触角上，发现了6种感器类型；毛形感器、钟形感器、Ⅰ型腔锥感器、Ⅱ型腔锥感器、刺形感器和板形感器。板形感器和刺形感器是最丰富的类型。在产卵器外壁上，观察到味觉和机械感受感器。在内部，卵道有另外两种感觉结构。讨论了每种感器在昆虫生态环境中的假定功能作用以及该昆虫使用的产卵机制。
