Wafer-lid
Guides
Aptostichus atomarius
San Bernardino hills trapdoor spider
Aptostichus atomarius, the San Bernardino hills trapdoor spider, is a wafer-lid trapdoor spider in the family Euctenizidae. First described by Eugène Simon in 1891, this species is native to the United States. Like other members of its genus, it constructs silk-lined burrows with wafer-like trapdoor lids. The species is part of a diverse genus of trapdoor spiders found primarily in California and surrounding regions.
Eucteniza relata
Southwestern Trapdoor Spider
Eucteniza relata, commonly known as the southwestern trapdoor spider, is a species of wafer-lid trapdoor spider in the family Euctenizidae. It is found in the United States and Mexico. The species belongs to a family of mygalomorph spiders known for constructing burrows with trap doors made of soil, vegetation, and silk.