Chitinous Shell
Chitinous shell is the hard outer plating of insectoid monsters. In The Witcher 3 it is a crafting component you will mostly pick up without trying, and its main job is in leatherwork for the higher tiers of gear.
Where to get chitinous shell
Dropped by insectoids such as arachasae, endregas and giant centipedes, found in monster nests, sold by several merchants, or gained by dismantling grandmaster witcher chest armor and gauntlets.
Used to craft: Cured draconid leather.
Get it by dismantling: Grandmaster Feline Gauntlets, Grandmaster Ursine Gauntlets, Manticore Gauntlets.
How to obtain
Dropped by: Arachas, Arachnomorph, Armored Arachas, Endrega Drone, Endrega Warrior, Endrega Worker, Giant Centipede, Kikimore Warrior, Kikimore Worker, Pale Widow and Venomous Arachas.
Sold by: some armorers, quartermasters in Velen, merchants in Skellige, the Grandmaster smith in Toussaint and the Ofieri merchant (Hearts of Stone).
Keep exploring
Plan a Remastered build: skill trees, mutagens, gear and a shareable build image.
Pick a potion, decoction or bomb and see every ingredient you need.
Answer the key choices and find out which Witcher 3 ending you will get.
Every location, quest and monster in the first region on one map.
The Wolf School's hidden valley: the keep, the Bastion, caves and treasure.
Tick off every school gear diagram and crafted piece, with diagram locations.
Search any monster and see the right oil, Signs and bombs.