Web Hunter Feat 9
Source Pathfinder Lost Omens: The Mwangi Expanse
Through the careful cultivation of highly sensitive hairs, you've developed the ability to sense creatures without seeing them. You gain imprecise tremorsense at a range of 15 feet. When you and a creature are both touching the same anchored, threadlike object (such as a rope, webbing, or wire), your imprecise tremorsense can sense that creature at a range of 60 feet.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
AnadiA reclusive people from Garund who resemble spiders and can assume human forms.