''Eucteniza relata'', the southwestern trapdoor spider, is a species of wafer-lid

trapdoor spider Trapdoor spider is a common name that is used to refer to various spiders from several different groups that create burrows with a silk-hinged trapdoor to help them ambush prey. Several families within the infraorder Mygalomorphae contain trapdoo ...

in the family

Euctenizidae The Euctenizidae (formerly Cyrtaucheniidae subfamily Euctenizinae) are a family of mygalomorph spiders. They are now considered to be more closely related to Idiopidae. Etymology The name comes from the Greek prefix (''eu-''), meaning "valuabl ...

. It is found in the United States and Mexico.

References

Euctenizidae Articles created by Qbugbot Spiders described in 1895 Spiders of North America {{mygalomorphae-stub