|a1=<small>The outer layer of the exoskeleton is called the epicuticle which is made of protein and covered by a waxy layer. The inner layers of the exoskeleton are called the endocuticle and the exocuticle which are made of protein and chitin. | |a1=<small>The outer layer of the exoskeleton is called the epicuticle which is made of protein and covered by a waxy layer. The inner layers of the exoskeleton are called the endocuticle and the exocuticle which are made of protein and chitin. |