香蕉假茎象甲触角感器的扫描电镜观察

Scanning Electron Microscopic Observations of Banana Pseudostem Weevil,Odoiporus longicollis Olivier(Coleoptera:Curculionidae)Antennal Sensilla

应用日立S-3000N型扫描电镜对香蕉假茎象甲雌、雄成虫的触角形态和感器进行了观察。结果表明:香蕉假茎象甲触角为膝状,由柄节、梗节和鞭节组成。触角表皮普遍具有波浪形刻纹,共有4种感器,即毛形感器、刺形感器、锥形感器和芽孢形感器,其中,毛形感器有3种类型,刺形感器有2种类型。香蕉假茎象甲雌、雄个体间触角感器类型及其分布均无明显差异。触角上的各种感器类型多样,数量众多,分布集中,鞭节上感器最多,梗节次之,柄节无感器。

Antennal morphology and sensilla of O.longicollis were studied using scanning electron microscopy（Hitachi,S-3000N）.The results showed that the geniculate antenna consisted of the scape,pedicel and flagellum.There were wavy grooves on the antenna surface,and the sensilla could be classified into four types morphologically,including sensilla trichodea,sensilla chaetica,sensilla basiconic and sensilla gemmiformium,among which,sensilla trichodea could be divided into three subtypes,and two subtypes of sensilla chaetica could also be observed.No difference was found in the type and distribution of the sensilla between the male and female adults.There were differences among the distribution and number among the scape,pedicel and flagellum of the antenna.