Figure 7 from: Vittori M, Kostanjšek R, Žnidaršič N, Strus J (2012) Molting and cuticle deposition in the subterranean trichoniscid Titanethes albus (Crustacea, Isopoda). ZooKeys 176: 23-38. https://doi.org/10.3897/zookeys.176.2285

Figure 7 - Ultrastructure of anterior tergites in postmolt. A anterior tergite shortly after molt. First lamellae of the endocuticle (en) are deposited proximally to the exocuticle (ex). Pore canals (pc) appear electron lucent. The apical plasma membrane of epidermal cells (e) forms finger-like extensions (fe). B apical region of an epidermal cell in postmolt. The epidermal cell (e) contains a well developed RER (r). The apical plasma membrane forms short protrusions (p) with dense tips. Several lamellae of the endocuticle (en) are deposited. C bundle of tubules (tu) protruding from the epicuticle (ep) of a tergite in postmolt. The center of the bundle (c) is electron lucent. D section through a pore (po) in the exocuticle beneath a bundle of tubules in postmolt. The lumen of the pore is electron dense. E The epicuticle (ep), exocuticle (ex) and endocuticle (en) in intermolt. b bacterium, m mitochondrion, sc scale.