Mygalomorphae is a suborder of spiders known for their robust bodies and large size. They are commonly referred to as "primitive" or "trapdoor" spiders. Mygalomorphs have a unique structure, with fangs that point downward, allowing them to burrow and create silk-lined retreats. These spiders are primarily found in soil and leaf litter, where they construct burrows with camouflaged lids. Unlike many other spiders, Mygalomorphae do not spin webs to catch prey; instead, they ambush insects that come near their hiding spots. Their lifespan can be quite long, with some species living for several years.