The Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University, Beijing, 100083, People's Republic of China.
Microsc Res Tech. 2013 Apr;76(4):423-31. doi: 10.1002/jemt.22183. Epub 2013 Feb 11.
Chrysolina aeruginosa Fald. (Coleoptera, Chrysomelidae) is an important pest of Artemisia ordosica Krasch. In recent years, this phytophagous beetle has spread rapidly throughout northwest China, which has led to mass mortalities of the A. ordosica. This pest has caused great damage to the local ecology. To address this problem, this study compared the sensilla types and their densities on the antennae, maxillary palps, and labial palps of C. aeruginosa. Six different types of sensilla were observed on the antennae using scanning electron microscopy, i.e., sensilla chaetica, sensilla trichodea, sensilla basiconica, sensilla coeloconica, sensilla styloconica, and Böhm bristles. Sensilla chaetica were the main sensilla on the antennae. There was a significant difference in the distribution and density of sensilla trichodea between males and females. Sensilla basiconica were distributed from the fifth to the ninth flagellomeres. Sensilla coeloconica and sensilla styloconica were usually found from the fifth to the eighth flagellomeres. Böhm bristles were found only on the terminal region of the scape and pedicel. Sensilla chaetica and sensilla twig basiconica were observed on the maxillary and labial palps. Sensilla chaetica were distributed all over the maxillary and labial palps. Sensilla twig basiconica were located in the distal areas of these two types of palps. In this study, we also discussed the responses of C. aeruginosa to the volatile semiochemicals produced by their host plants and the behaviours exhibited during host and habitat selection.
铜绿丽金龟 Fald.（鞘翅目，丽金龟科）是一种重要的油蒿 Artemisia ordosica Krasch 食叶害虫。近年来，这种植食性甲虫在中国西北地区迅速蔓延，导致油蒿大量死亡。这种害虫对当地生态造成了极大的破坏。为了解决这个问题，本研究比较了铜绿丽金龟触角、下颚须和下唇须上的感器类型及其密度。使用扫描电子显微镜观察到触角上有 6 种不同类型的感器，即毛形感器、刺形感器、锥形感器、腔锥形感器、棍棒形感器和 Böhm 鬃毛。毛形感器是触角上的主要感器。雌雄个体间的刺形感器分布和密度存在显著差异。锥形感器分布于第 5 到第 9 个鞭节。腔锥形感器和棍棒形感器通常分布于第 5 到第 8 个鞭节。Böhm 鬃毛仅分布于梗节和柄节的末端区域。下颚须和下唇须上也观察到毛形感器和刺形感器。毛形感器分布于下颚须和下唇须的各个部位。刺形感器位于这两种下颚须和下唇须的末端区域。本研究还讨论了铜绿丽金龟对其寄主植物挥发半挥发物的反应以及在寄主和栖息地选择过程中的行为表现。
