Trapdoor spider is a common name that is sometimes used to refer to different species of spider.
Families that contain trapdoor spiders:
Barychelidae, the brushed trapdoor spiders
Ctenizidae, medium-sized, mygalomorph spiders
Euctenizidae, a family of spiders that make wafer-like or cork-like trapdoors
Idiopidae, also known as armored trapdoor spiders, a family of large, tarantula-like spiders
Liphistiidae, a family of spiders from Southeast Asia, China, Japan, and Africa
Migidae, also known as tree trapdoor spiders, occurring predominantly in the Southern Hemisphere
Nemesiidae, a family of relatively large, brown, elongated spiders with strong legs
Wafer trapdoor spider, species in the superfamily Cyrtauchenioidea and family Cyrtaucheniidae
