Trapdoor Spiders are a medium-sized mygalomorph (an infraorder of spiders), spiders that construct burrows with a cork-like trapdoor made of soil, vegetation and silk. The Trapdoor Spider is a common name for any of several large, hairy, harmless tropical spiders that nest underground. This spider lives under ground for most of its life. It does not have a web like other spiders do. It has a trapdoor on top of a burrow. A Trapdoor spiders burrow is around 30 centimetres deep and 5 centimetres across. Sometimes they like to make their burrows beside creeks or rivers so they can catch little fish. The trapdoor is hinged on one side with silk. The spiders, who are usually nocturnal, typically wait for prey while holding onto the underside of the door with the claws on their tarsi (the cluster of bones in the foot between the tibia and fibula and the metatarsus). Prey is captured when insects or other arthropods venture too close to the half-open trapdoor at night. The spider detects the prey by vibrations and when it comes close enough, the spider jumps out of its burrow and captures it. Female Trapdoor spiders never travel far from their burrows. These enemies are wasps, scorpions and people. The bite of the Trapdoor Spider is of low risk (non toxic) to humans, Trapdoor Spiders rarely bite but very painful.