Morphological and Ultrastructural Characteristics of Tea Mosquito Bug Antennae, Helopeltis theivora Waterhouse (Hemiptera: Miridae) from Hainan, China
文献类型： 外文期刊
作者： Li, Wenhui 1 ; Liao, Yonglin 4 ; Lin, Zhufeng 1 ; Ji, Xuncong 1 ; Yao, Qi 1 ;
作者机构： 1.Hainan Acad Agr Sci, Inst Plant Protect, Key Lab Plant Dis & Pest Control Hainan Prov, Haikou 571100, Peoples R China
2.Hainan Acad Agr Sci, Res Ctr Qual Safety & Stand Agr Prod, Haikou 571100, Peoples R China
3.Hainan Univ, Coll Trop Agr & Forestry, Danzhou 571799, Peoples R China
4.Guangdong Acad Agr Sci, Inst Plant Protect, Guangzhou 510640, Peoples R China
关键词：
tea mosquito bug
期刊名称：INSECTS （ 影响因子：2.9； 五年影响因子：3.3 ）
ISSN：
年卷期： 2025 年 16 卷 7 期
页码：
收录情况： SCI
摘要： The tea mosquito bug, Helopeltis theivora Waterhouse, (Hemiptera: Miridae) is a significant sap-sucking pest in tropical tea plantations that causes substantial losses in tea production on Hainan Island, China. The morphological and ultrastructural characteristics of H. theivora antennae have not been elucidated. Here, we used several microscopy techniques (SDM, SEM, and TEM) to investigate the morphology as well as the setae and sensilla on the antennae of nymphs and adults of H. theivora. SDM observations indicated that the antennae of H. theivora were filamentous in shape and included four segments: scape, pedicel, flagellum I, and flagellum II. The length of the antenna was approximately twice that of the body and the setae were enriched in flagellum II. The SEM results showed that there were a total of six types of sensilla on the antenna of H. theivora, including the sensilla chaetica (SCh), sensilla trichoidea (ST), sensilla basiconica (SB), sensilla coeloconica (SCo), sensilla mammilliformia (SM), and B & ouml;hm's bristles (BB). In particular, there were three subtypes (I, II, and III) of different lengths in SCh and SB, and two subtypes of straight (I) and curved (II) sensilla in ST. The TEM results indicated that diverse internal structures were present in SCh, ST, SB, and SCo, suggesting different functions and different sensory mechanisms of these four main sensilla in the orientation behavior of H. theivora on tea plants. These findings provide a theoretical basis for further exploration of the olfactory orientation of H. theivora in tropical tea plantations and pave the way for the development of semiochemical-based control options in the future.
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