(from the article `arthropod`) ...(see figure), which not only functions in support but also provides protection and, with the muscle system, contributes to locomotion. The ...
The thin, non-chitinous, surface layers of the cuticle.
Thin, outermost layer of arthropod cuticle; contains sclerotin but not chitin.
epicuticle The waxy outer layer of the protective body covering cuticle for the exoskeleton of an insect.
the rigid outermost layer of cuticle, lying above the procuticle. 
the thin, waxy outer layer of the insect exoskeleton.