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Bone Spider

Bone Spider

Eternal Caves

Hostile

DropsWeb Spider Sac (100% chance, 6-14 — used to craft the Grappling Hook); Bone (55.6% chance); String (39.5% chance); Spider Eye (39.5% chance)
Hostilityhostile
SpawnsSpider Den
StrategyDeals 18 melee damage plus poison. Can climb walls and lurks on cave ceilings before dropping on players. Unaffected by spiderwebs and summons spiderlings during the fight.

Classified as a hostile mini-boss. Fire immune. Entity id panascais_caves:bone_spider. Nameable. Health value not documented on the wiki. Wiki text has no color description; "bone-white"/"grey" keywords are derived from the mob's spawn egg icon, not a confirmed in-game render.

Sources