Eggs of the Asian tiger mosquito Aedes albopictus are fully covered with an air‐covering plastron network that enables them to stay below the surface of the water. Scanning electron microscopy revealed that the chorionic surface was covered with clusters of globular tubercles of different sizes. Histologically, the eggshell provides a typical water‐repellent microarchitecture consisting of an outer exochorion, a membranous endochorion and an intermediate pillar layer. The eggshell has a distinct chorionic tubercle that increases the surface area for gas exchange to enhance respiration capacity. In particular, the chorionic wall gives rise to a hexagonal pattern with smooth and elevated boundaries. In A. albopictus, a set of micropatterns for each hexagon was specified, and each central tubercle was surrounded by 20 small peripheral tubercles. Our fine structural analysis revealed that the partitioning of the surface into numerous hexagonal chorionic sculptures is associated with the Voronoi partition (tessellation), based on the distance to a point in a specific area of the plane. Therefore, the micropatterned surface of the mosquito eggshell appears to not only resist wetting by hydrostatic pressure but also provide resistance to lysate deposition by the biofouling process.

中文翻译：

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白纹伊蚊蚊子微纹蛋腹甲的结构特征

亚洲虎蚊白纹伊蚊的卵被空气覆盖的腹甲网络完全覆盖，使它们能够停留在水面以下。扫描电子显微镜显示绒毛膜表面覆盖着不同大小的球状结节簇。从组织学上讲，蛋壳提供了典型的防水微结构，由外绒毛膜、膜状内绒毛膜和中间柱层组成。蛋壳具有明显的绒毛膜结节，可增加气体交换的表面积以增强呼吸能力。特别是，绒毛膜壁产生具有平滑和升高边界的六边形图案。在 A. albopictus 中，为每个六边形指定了一组微图案，每个中央结节被 20 个小的外围结节包围。我们的精细结构分析表明，根据到平面特定区域中某个点的距离，将表面划分为众多六边形绒毛膜雕塑与 Voronoi 划分（镶嵌）相关。因此，蚊子蛋壳的微图案表面似乎不仅可以抵抗静水压力的润湿，还可以抵抗生物污染过程中的裂解物沉积。