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    Glossary endocuticle

    innermost flexible layer of arthropod exoskeleton

    The endocuticle is the innermost layer of the cuticle in arthropods, such as insects and crustaceans. It is composed of chitin and proteins, providing flexibility and strength to the exoskeleton. Unlike the outer layers, the endocuticle is not sclerotized, meaning it remains softer and more pliable, which is crucial for the animal's movement and growth.

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