【摘要】 【目的】了解杨背麦蛾成虫触角感器的类型、数量、分布和超微形态。【方法】利用扫描电镜技术观察杨背麦蛾雌、雄蛾的触角感器。【结果】杨背麦蛾触角感器绝大部分位于触角鞭节的腹面和侧面,少部分位于柄节和梗节。基于感器外部形态可分为8种类型:B?hm氏鬃毛(BBⅠ型和BBⅡ2种亚型)、毛形感器、锥形感器(SBⅠ和SBⅡ2种亚型)、刺形感器、腔锥形感器、耳形感器、鳞形感器和栓锥形感器。其中毛形、锥形和耳形感器表皮具多孔,属于嗅觉感器。雌、雄蛾触角感器形态和分布无明显差异。但雄蛾触角与雌蛾相比,亚鞭节多1～4节;毛形和锥形SBⅡ感器明显长于雌蛾;刺形和腔锥形感器基部直径雄蛾明显长于雌蛾;毛形、锥形、刺形、腔锥形和鳞形感器总数均明显多于雌蛾。【结论】杨背麦蛾触角感器种类丰富,多数具有嗅觉功能,雌、雄蛾触角感器在数量和特征上有明显的性二型现象。更多还原

【Abstract】 【Objective】 This study aimed to clarify the types, quantity, distribution and ultrastructure of antenna sensilla in adults of Anacampsis populella.【Method】 The antenna sensilla in female and male adults of A. populella were observed with scanning electron microscope.【Result】 Most of antennal sensilla were confined to ventral and lateral surface of the flagellum, while the minority was on scape and pedical. Based on the external morphology of the sensilla,it was able to be classified into eight types: B?hm bristles(two subtypes, BBⅠ and BBⅡ), trichodea, basiconica(two subtypes, SBⅠ and SBⅡ), chaetica, coeloconica, auricillica, squamiformia and styloconica. Among them, trichodea, basiconica and auricillica were multiporous on cuticle, which were considered to be olfactory organ. There was no difference in morphology and distribution of the sensilla between male and female moths, but the flagellum of male antennae had 1-4 segments more than female moth. The sensilla trichodea and sensilla basiconicaⅡ of male moth were significantly longer than those of female moth. The basal diameter of sensilla chaetica and sensilla coeloconica was significantly wider than that of female moth. In addition, the amount of sensilla trichodea, basiconica, coeloconica, squamiformia and chaetica of male was significantly more than those of female.【Conclusion】 The antennal sensilla of A. populella were abundant, and most of them had olfactory function. There was sexual dimorphism in number and sensilla characteristics between male and female.更多还原