第二章昆虫的头部 第二节头部的基本构造 a)anterior b)lateral occipital sulcus ecdysial line ecdysial line occiput postoccipital suture postocciput neck circumocular sulcus membrane subgenal circumantennal sulcus DOST sulcus gena gena frons -subocular sulcus- frons gena posterior anterior tentorial pit tentorial pit clypeus epistomal sulcus subgena anterior articulation of labrum mandible labium mandible maxilla 图55昆虫壳的基本构造