Wang Qi, Wang Longzheng, Wang Qing, Yan Shanchun
Key Laboratory of Sustainable Forest Ecosystem Management, Ministry of Education, Northeast Forestry University, Harbin 150040, China.
Forest Protection Research Institute of Heilongjiang Province, Heilongjiang Academy of Forestry, Harbin 150040, China.
Insects. 2024 Aug 30;15(9):655. doi: 10.3390/insects15090655.
(Lepidoptera: Lasiocampidae) and (Lepidoptera: Lymantriidae) are two important forest defoliators in northeast China, with the former being a specialist on spp. and the latter being a generalist feeding on >500 species of plants. The morphology and ultrastructure of antennal sensilla of both male and female and were examined using scanning electron microscopy (SEM). In both sexes of , the following five types of antennal sensilla were found: sensilla trichoidea, s. chaetica, s. coeloconica, s. gemmiformia, and s. basiconica. In males of , six types of antennal sensilla: sensilla trichoidea, s. chaetica, s. coeloconica, s. basiconica, s. styloconica, and s. auricillica, were identified. In addition to the six types found in males, a seventh type of sensilla, s. squamiform, was only detected on female antennae. For s. chaetica of , a unique ultrastructure of sub-branches that have one branch, two branches, and three branches was observed on their tips, which has not yet been reported on other insects. s. styloconica, s. auricillica, and s. squamiform, not found in the specialist , may be related to the euryphagy of . Potential functionalities of these sensilla were discussed with reference to moth feeding habits, and their morphology, distribution, and ultrastructures on both species.
（鳞翅目：枯叶蛾科）和 （鳞翅目：毒蛾科）是中国东北地区两种重要的食叶害虫，前者是 属植物的专食性害虫，后者是多食性害虫，可取食500多种植物。利用扫描电子显微镜（SEM）对 和 的雌雄成虫触角感器的形态和超微结构进行了观察。在 的雌雄成虫触角上均发现了以下五种感器：毛形感器、刺形感器、腔锥形感器、珠形感器和锥形感器。在 的雄虫触角上鉴定出六种感器：毛形感器、刺形感器、腔锥形感器、锥形感器、栓锥形感器和耳形感器。除了在雄虫触角上发现的六种感器外，仅在 的雌虫触角上检测到第七种感器——鳞形感器。对于 的刺形感器，在其顶端观察到具有独特超微结构的亚分支，这些亚分支有一个分支、两个分支和三个分支，这在其他昆虫中尚未见报道。在专食性害虫 中未发现的栓锥形感器、耳形感器和鳞形感器可能与 的多食性有关。结合蛾类的取食习性以及这两种昆虫触角感器的形态、分布和超微结构，对这些感器的潜在功能进行了讨论。
