悬铃木方翅网蝽触角感器扫描电镜观察

利用扫描电镜对悬铃木方翅网蝽Corythucha ciliata(Say)雌、雄成虫触角背面和腹面进行观察。结果表明:悬铃木方翅网蝽触角为棒状,共4节,分为柄节、梗节和鞭节。触角上共有4种感器,分别为刺型感器、锥形感器、毛型感器和芽型感器;这些感器不存在性二型现象。其中,刺型感器分为大刺型感器和小刺型感器2种类型;芽型感器首次在异翅亚目昆虫触角上发现。雄成虫触角感器数量明显多于雌成虫,不同类型的感器在触角各节上的数量与分布各不相同。

Observations on the antennal sensilla of Corythucha ciliata under scanning electron microscopy

The antennal morphology and sensilla of Corythucha ciliata （Say） were studied using scanning electron microscopy. The results show that the clavate antenna of both adult males and females consisted of scape, pedicel and two flagellomeres. Four types of sensillum were observed on the antenna of adult males and females, including the first observation of sensillum gemmiformia in a heteropteran insect. These were sensilla chaetica, sensilla basiconca, sensilla trichodea and sensilla genlmiformia. No sexual dimorphism in adult sensilla was apparent. The sensilla chaetica could be divided into big and small types. Females had significantly more sensilla than males. The quantity and distribution of each kind of sensillum differed in different segments of the antenna.