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SEM micrograph of the (a) fracture surface of the first walking leg. Enlarged SEM micrographs of the area enclosed by the rectangles in (a); (b) exocuticle layer, (c) intermediate layer, and (d) endocuticle layer. In (b), superimposed planes rotate around the normal axis (nd) of the exocuticle. SEM micrographs of the (e) exocuticle layer and (f) endocuticle layer on a polished surface. Here, pct denotes pore canal tubules, and pc denotes pore canals.
