扫描电镜对锯齿叉趾铁甲背部形态的观察研究

A study on dorsal surface of Dactylispa (Tr.) angulosa with SEM

利用扫描电镜对锯齿叉趾铁甲背部体表进行了观察研究 .结果表明 ,其前胸背板密布的刻点为不规则圆形 ,具刚毛 ,此刚毛着生于刻点的内侧缘 ,长度为 6 0～ 80μm ,鞘翅具有规则排列的刺突和呈纵行排列的刻点 .刻点近圆形 ,均具一向内的突起 ,在突起的背部着生有刚毛 ,长度约 5 7μm .这些重要的细微结构显示昆虫鞘翅演变的多样性 ,并为其分类和进化提供了证据 .

The dorsal surface structures have been examined with SEM in Dactylispa (Tr.) angulosa. Its pronotum is densely covered with pits which are irregular circles and have setaes. The setaes arise off the center of the pit floor, 60～80 μm long. There are regular spikes and pits which are in longitudinal arrangement, the pits are nearly circles and all have inner prominence. The setaes on the dorsal of these prominence are 57 μm long. These important microstructures show diversity in the evolution of the insect elytra, and give evidence for their classification and evolution.