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Top-view (left) and tilted (right) images of nanopillar arrangements on the wing epicuticle of seven species of dragonfly from three families. (A) Austrothemis nigrescens, (B) Orthetrum chrysostigma, (C) T. annulata, (D) S. fonscolombii, (E) Anax parthenope, (F) Anax imperator, and (G) Onychogomphus forcipatus. Scale bar represents 200 nm (top-view) and 100 nm (tilted).
