chitin-based cuticle MIAA:0000150 A cuticular covering that is composed primarily of chitin. The main structural component of arthropod cuticle is a polysaccharide, chitin, composed of N-acetylglucosamine units, together with proteins and lipids[WP]. EFO:0000944 HAO:0000240 MAT:0000150 FBbt:00004970 cuticle