Epic trapdoor spiders A compilation of some of my favorite trapdoor spider videos I filmed last year. Featured are Liphistius ornatus and Titanidiops sp. Tanzania. Liphistius are ancient spiders that create sensory lines radiating from their trapdoor, allowing them to detect vibrations from passing prey. Titanidiops do not build these lines; they wait directly beneath the door and burst out the moment they sense vibrations nearby. | Clemens Schweiger