the layer of an insect's cuticle between the epicuticle and the endocuticle, which is often hard and dark in colour
Examples of 'exocuticle' in a sentence
exocuticle
In the proximal exocuticle and the endocuticle fibrils do not assemble to fibres and are surrounded by mineral individually.
Bastian Hans Michael Seidl, Andreas Ziegler 2012, 'Electron microscopic and preparative methods for the analysis of isopod cuticle',ZooKeyshttp://zookeys.pensoft.net/lib/ajax_srv/article_elements_srv.php?action=download_pdf&item_id=2529. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)