1. Trap Door Spiders (Ctenizidae) By Barb and Jeff

2. Characteristics of Ctenizidae (Trapdoor Spider) Medium-sized spiders that construct burrows with a cork-like trapdoor made of soil, vegetation and silk Medium-sized spiders that construct burrows with a cork-like trapdoor made of soil, vegetation and silk Trapdoor is hinged on one side with silk Trapdoor is hinged on one side with silk Usually nocturnal, typically wait for prey while holding onto the underside of the door with their claws Usually nocturnal, typically wait for prey while holding onto the underside of the door with their claws Detects the prey by vibrations and when it comes close enough, the spider leaps out of its burrow and captures it Detects the prey by vibrations and when it comes close enough, the spider leaps out of its burrow and captures it Enemies of the trapdoor spider include the spider wasps, which seek out the burrows to gain entrance. They sting the owner and lay their eggs on its body. When the egg hatches, the larva devours the spider alive Enemies of the trapdoor spider include the spider wasps, which seek out the burrows to gain entrance. They sting the owner and lay their eggs on its body. When the egg hatches, the larva devours the spider alive

3. Life on Earth Eukayotes (Nucleus) Metazoa (Animals) Bilateria BilateriaEcdysozoa Arthropoda (Insects, Spiders, etc) Arthropoda (Insects, Spiders, etc) Worms WormsCheliceramorphaInsects Arachnida (Spiders, Mites, Scorpions) Sea Spiders Araneae (Spiders) Scorpionida Acari (Ticks/Mites) Mygalomorphae Ctenizidae CtenizidaeAneomorphae Indented Classification

4. Ecdysozoa ArthropodaWorms Exoskeleton Exoskeleton CheliceramorphaInsects 8 Walking Legs (Independent 8 Walking Legs (Independent Fangs Invasion of Land) ArachnidaSea Spiders Land Land AraneaeScorpionidaAcari (Ticks/Mites) Silk ProductionStingers/Claws Silk ProductionStingers/Claws MygalomorphaeAraneomorephae “Vampire” Fangs “Pinching” Fangs “Vampire” Fangs “Pinching” FangsCtenizidae Phylogenetic Tree