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首页> 外文期刊>Journal of submicroscopic cytology and pathology >Submicroscopic anatomy of photoreceptors in the female scale insect Eupulvinaria hydrangeae (Homopteres, Coccideae).
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Submicroscopic anatomy of photoreceptors in the female scale insect Eupulvinaria hydrangeae (Homopteres, Coccideae).

机译：雌性鳞翅目Eupulvinaria hydrangeae（Homopteres，Coccideae）中光感受器的亚显微解剖。

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摘要

The submicroscopic anatomy of the eye in female Eupulvinaria is described. This scale insect has no compound eyes but simple pericerebral eyes composed of one pair of ocelli. The ocelli, located dorsolaterally to the brain, are of rhabdomeric type. They are situated in the subepidermal region underneath the basement membrane of the epidermis. Each ocellus consists of a cup made of a layer of numerous pigmented cells enclosing a few photoreceptive cells. The cuticular lens is facing the opening of the pigment-cup, while the optic nerve is emerging from the bottom of the cup. Pigmented cells show characteristic pigment granules. They are linked to each other by interdigitations or by desmosomes junctions. Both dendrites and cell body of the photoreceptor cell lie inside the eyecup, while the axon lies outside. The dendritic processes consist of large shaft-shaped rhabdomeres with microvilli extending perpendicular to the direction of the shaft. These microvilli are enveloped by digitiform cytoplasmic extensions of pigmented cells. These latter strands are free of pigment granules but contain microtubules orientated to the centre of the cup.
机译：描述了雌性葡萄球菌的眼睛的亚显微解剖。这种鳞翅目昆虫没有复眼，而是由一对ocelli组成的简单的周脑眼。枕骨位于大脑背外侧，是横纹型的。它们位于表皮基底膜下方的表皮下区域。每个卵母细胞由一个杯子组成，该杯子由一层包裹着几个感光细胞的大量色素细胞组成。表皮晶状体面对色素杯的开口，而视神经正从色素杯的底部露出来。色素沉着的细胞显示出特征性的色素颗粒。它们通过叉指或桥粒连接彼此相连。树突和感光细胞的细胞体都位于眼罩内部，而轴突则位于外部。树突过程由大的杆状横纹肌和微绒毛组成，横纹肌垂直于轴的方向延伸。这些微绒毛被色素细胞的数字状细胞质延伸所包裹。后面的这些线没有颜料颗粒，但包含定向到杯中央的微管。

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