What common name is used for members of the spider infraorder Mygalomorphae?

The common name used for members of the spider infraorder Mygalomorphae is mygalomorph spiders.

Mygalomorphae is one of the major living spider lineages. Its members include tarantulas, Australian funnel-web spiders, mouse spiders, and many trapdoor spiders. The name comes from Greek roots meaning roughly “shrew-shaped,” while an older name, Orthognatha, refers to their downward-pointing fangs.

Mygalomorphs are generally stout-bodied spiders with powerful chelicerae and two pairs of book lungs. Unlike araneomorph spiders, their fangs move largely downward rather than crossing toward one another. Many species live in burrows, sometimes sealing the entrance with a hinged silk-and-soil trapdoor.

They are often confused with araneomorphs, the much larger spider group that includes jumping spiders and orb-weavers. Despite their intimidating size, most mygalomorphs are not dangerous to humans. Some are exceptionally long-lived: a trapdoor spider in Western Australia was documented living for about 43 years.