Kuster J E
Cell Tissue Res. 1980;206(1):123-38. doi: 10.1007/BF00233613.
The structure of the compound eyes of adult Cicindela tranquebarica Herbst was examined by use of light, scanning, and transmission electron microscopy. Each ommatidium of these photopic eyes is eucone and has a "subcorneal layer" situated between the corneal lens and crystalline cone. A distal rhabdomere consisting only of microvilli from retinula cell seven, a more proximal, rectangular, fused rhabdom formed from six retinula cells, and a basal, eighth retinula cell with a spherical rhabdomere comprise the light sensitive portions of the ommatidium. The "subcorneal layer" consists of lamellae of endocuticular microfibrils and, in surface view, shows 11 concave polygons. Proximal extensions of the crystalline thread form inter-retinular fibres containing microtubules between retinula cells 1/2, 3/4, 5/6, and 7/1. The primary pigment cells are devoid of pigment granules, but are rich in rough endoplasmic reticulum. Proximal to each retinula cell nucleus are two basal bodies, one perpendicular to the other. The more proximal basal body extends two fibrillar feet proximally which fuse to form a horizontally-banded ciliary rootlet extending the length of the retinula peripheral to the rhabdom. Each ommatidium is surrounded by 16 secondary pigment cells. Interfacetal mechanoreceptors between some adjacent lenses each have a single bipolar neuron, with a dendritic sheath, tubular body, cilium, outer and inner sheath cells, and an axon surrounded by a neurilemma sheath cell.
利用光学显微镜、扫描电子显微镜和透射电子显微镜对成年金斑虎甲（Cicindela tranquebarica Herbst）复眼的结构进行了研究。这些适亮眼的每个小眼都是真晶锥眼，并且在角膜透镜和晶锥之间有一个“角膜下层”。一个仅由视小杆细胞7的微绒毛组成的远端视杆、一个由六个视小杆细胞形成的更靠近近端的矩形融合视杆以及一个带有球形视杆的基部第八视小杆细胞构成了小眼的感光部分。“角膜下层”由内表皮微原纤维薄片组成，在表面观中呈现11个凹多边形。晶锥丝的近端延伸形成视网膜间纤维，这些纤维在视小杆细胞1/2、3/4、5/6和7/1之间含有微管。初级色素细胞不含色素颗粒，但富含粗面内质网。在每个视小杆细胞核的近端有两个基体，彼此垂直。更靠近近端的基体向近端延伸两个纤维状足，它们融合形成一个水平带状的睫状小根，延伸到视杆周围的视小杆细胞长度。每个小眼被16个次级色素细胞包围。一些相邻透镜之间的小眼间机械感受器各有一个单极双极神经元，具有树突鞘、管状体、纤毛、外鞘细胞和内鞘细胞，以及一个被神经膜鞘细胞包围的轴突。
