Farasha
This bug has broad, thick shelled appendages that can be used to block attacks. When unoccupied, each arm counts as a shield with Quality equal to half of the bug's Shell, rounded up. These are upgraded using shield upgrades instead of weapon upgrades and can be taken even with natural weapons that replace an arm completely.
If this bug also has the Spiky Trait, it may take the Spiked modifier on this trait without spending an Attribute advancement.