Figure 2 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 2 - Sternal CaCO3 deposits in Titanethes albus. A individual in early premolt with sternal deposits on anterior four pereionites. Deposits are bipartite with a larger anterior part (an) and a smaller posterior part (po). Round fenestrations (arrowheads) perforate the deposits. B individual in late premolt with fully developed sternal deposits. The anterior and posterior part on each segment are fused and the deposits have a uniform shape. C scanning electron micrograph of spherules forming the sternal deposits in late premolt. D scanning electron micrograph of a cleaved sternal deposit (d) in late premolt. Spherules are proximally more loosely arranged. p1 pereionite 1, p2 pereionite 2, p3 pereionite 3, p4 pereionite 4, oc old cuticle.