Proboscides are important feeding devices for most adult Lepidoptera and exhibit significant morphological modifications and types of sensilla associated with feeding habits. In this study the architectures of the proboscides and sensilla were compared between the cotton bollworm Helicoverpa armigera (Hübner) and the armyworm Mythimna separate (Walker) using scanning electron microscopy. The proboscides of both species consist of two elongated maxillary galeae joined by dorsal and ventral legulae, forming a food canal. The dorsal legulae in H. armigera disappear a short distance from the proboscis apex, whereas those in M. separate exist up to the apex. Three types of sensilla are present on the proboscides of both species: sensilla chaetica, basiconica, and styloconica. The morphological differences of the sensilla mainly concern the sensilla styloconica, whose styli have six to seven smooth-edged ridges in H. armigera but six serrate-edged ridges in M. separate. No significant sexual dimorphism was found in the proboscides and sensilla of both species except for the length of the zone without the dorsal legulae in H. armigera. The morphological similarities and differences of the proboscides and sensilla between the two species are briefly discussed.

中文翻译：

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棉铃虫和Mythimna分离（鳞翅目：夜蛾科）的感官和相关感官的形态学比较。

对于大多数成年鳞翅目而言，无节肢动物是重要的进食设备，并表现出与进食习惯相关的显着形态学改变和感觉类型。在这项研究中，使用扫描电子显微镜比较了棉铃虫Helicoverpa armigera（Hübner）和粘虫Mythimnaepa（Walker）的长生寄生虫和感官构造。两种物种的禁食者由两个细长的上颌大风腺组成，它们由背侧和腹侧豆科连接在一起，形成一条食道。棉铃虫的背侧豆科动物从长鼻尖消失了很短的距离，而在分离的M.中则存在直至尖尖。在这两种物种的无性繁殖体上都存在三种类型的感官：感性女贞，感性女神和香蒲。感器的形态学差异主要涉及感感线虫，其触角在棉铃虫中有6至7个平滑边缘的脊，而在分枝杆菌中有6个锯齿边缘的脊。在棉铃虫中，除了无背豆科的区域的长度外，在这两个物种的长喙和感官中均未发现明显的性二态性。简要讨论了这两个物种的长喙和感官的形态相似性和差异。