Fig. 8. Light micrographs of the proximal end of an empty ootheca obtained using a Wild MP400 Photomakroscop equipped for dark-field illumination. 5-10µl water was applied to the chorion (inner surface), and observations were made as the water evaporated from the specimen. The presence of water is revealed by the birefringent or light areas, where the water was retained. Note that the hexagon-shaped structures, characteristic of the chorion, contain water in their internal (ring-like) structures as well as along the exterior or planar surfaces. (A) Scale bar, 1 mm. (B) Scale bar, 0.5 mm.

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