Figure 7 from: Mrak P, Žnidaršič N, Tušek-Žnidarič M, Klepal W, Gruber D, Strus J (2012) Egg envelopes and cuticle renewal in Porcellio embryos and marsupial mancas. ZooKeys 176: 55-72. https://doi.org/10.3897/zookeys.176.2418

Figure 7 - Schematic representation of different protective envelopes, coating Porcellio scaber embryos and marsupial mancas during development (lasting 35 days), namely egg envelopes (chorion and vitelline membrane) and exoskeletal cuticle. During growth of embryos and mancas egg envelopes are shed and cuticle is renewed. ch – chorion; vm – vitelline membrane; ECM – extracellular matrix; epi – epicuticle; exo – exocuticle; endo – endocuticle; nc – newly assembling cuticle.