State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Plant Protection Resources and Pest Management of the Education Ministry, Entomological Museum, Northwest A&F University, Yangling, Shaanxi, China.
Microsc Res Tech. 2013 Aug;76(8):862-9. doi: 10.1002/jemt.22240. Epub 2013 Jun 3.
The fine structure of the ommatidia in males of the short-faced scorpionfly Panorpodes kuandianensis was investigated using scanning and transmission electron microscopy. The result shows that the compound eyes of male P. kuandianensis are of the apposition type, consisting of over 1700 ommatidia. Each ommatidium is composed of a laminated cornea, a eucone crystalline cone, eight retinula cells, a pair of primary pigment cells, and a group of 16 secondary pigment cells. Along the optical axis of the ommatidium, seven elongated retinula cells contribute their rhabdomeres to a centrally fused rhabdom, which is in tight contact with the proximal end of the crystalline cone, but smaller than the cone end in diameter. The eighth retinula cell is located above the basal lamina and only contributes its rhabdomere to the proximal part of the rhabdom. The microvilli of the rhabdom show an orthogonally-arranged orientation. The ommatidia of Panorpodidae are more similar to those of Panorpidae than Bittacidae in structure, adding weight to the view that the sister group of Panorpodidae is Panorpidae rather than Bittacidae.
使用扫描和透射电子显微镜研究了短脸蝎蛉雄虫小眼的精细结构。结果表明，宽甸蝎蛉雄虫的复眼为接眼型，由 1700 多个小眼组成。每个小眼由一个层状角膜、一个真锥形晶锥、八个感杆细胞、一对初级色素细胞和一组 16 个次级色素细胞组成。沿小眼的光轴，七个长形感杆细胞的感杆合并成一个中央融合的感杆，与晶锥的近端紧密接触，但直径小于锥端。第八个感杆细胞位于基膜上方，仅将其感杆贡献给感杆的近端。感杆的微绒毛呈正交排列。Panorpodidae 的小眼在结构上与 Panorpidae 比 Bittacidae 更相似，这进一步支持了 Panorpodidae 的姐妹群是 Panorpidae 而不是 Bittacidae 的观点。
