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. 2012 Mar 20;(176):73–85. doi: 10.3897/zookeys.176.2294

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Bastian H. M. Seidl, Andreas Ziegler

This is an open access article distributed under the terms of the Creative Commons Attribution License 3.0 (CC-BY), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Figure 3. — FE-SEM micrographs of polished sagittal plane through bulk tergite samples etched at pH 6.5 A, B, C and 8.0 D, E. A Fibres in the distal exocuticle (dex) and the isle-like structure of the proximal exocuticle (pex) caused by large pore canals (pc). Fibrils or fibres (arrowheads) in the pore canals are well visible. en, endocuticle. B, C Side views of tricorn sensilla. The epicuticular unmineralised material forming the sensilla is well distinguishable from the mineralised exo- and endocuticle. ep, epicuticle; sc, epicuticular scale. D, E Mild etching reveals regions containing mineral of different solubility. Mineral within the endocuticle appears etched whereas most regions within the exocuticle (ex) remain unaltered. Note etching within pore canals of the exocuticle.