part of part of in taxon develops from develops from composed primarily of chitin Arthropoda chitin-based cuticle MIAA:0000150 FBbt:00004970 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]. insect cuticle Wikipedia:Arthropod_exoskeleton HAO:0000240 EDITOR_NOTE TODO - split from exoskeleton? Also: See above sf item to see if this belongs in GO UBERON:0001001 arthropod exoskeleton cuticle exoskeleton EFO:0000944 MAT:0000150 arthropod cuticle cuticle integumental system outer epithelium chitin-based acellular structure