松突圆蚧雄成虫触角感器的扫描电镜观察

松突圆蚧(Hemiberlesia pitysophila Takagi)是我国南方重要的外来林业害虫。本研究利用扫描电镜对该蚧雄成虫的触角形态和感器进行了观察。结果表明:松突圆蚧雄成虫触角呈线状,由柄节、梗节和鞭节组成,共10节。触角感器共有5种,分别为Bhm氏鬃毛、毛形感器、乳头形感器、锥形感器、火柴形感器,其中,火柴形感器为首次在松突圆蚧雄成虫触角上发现并描述。不同感器在触角各节的数量和分布各不相同,其中,毛形感器数量最多,分布最广,乳头形感器次之,火柴形感器最少。此外,根据感器的分布、形态特征,结合已有的文献描述,推测了感器可能的功能。

Scanning electron microscopic observation of the antennal sensilla of the male adult scale insect Hemiberlesia pitysophila Takagi (Homoptera:Diaspididae)

Hemiberlesia pitysophila Takagi is an important forest pest in Southern China. We studied the antennal morphology and sensilla of the male adult H.pitysophila using scanning electron microscope. The antenna of the male adult of H.pitysophila was filiform with 10 segments, which consisted of the scape, pedicel and flagella. There were five types of antennal sensillae found： Bhm bristles, sensilla trichodea, papillary sensilla, sensilla basiconica, and match-shaped sensilla. The match-shaped sensilla is a novel type of sensilla, first described in this species. The number and the distribution pattern of sensillae were different in each antennal segment. The sensilla trichodea was most widely distributed, followed by papillary sensillae; the match-shaped sensillae were the least one.