Aptostichus atomarius explained

Aptostichus atomarius, the San Bernardino hills trapdoor spider, is a species of wafer-lid trapdoor spider in the family Euctenizidae. It is found in the United States.

Further reading

• Phylogenetic treatment and taxonomic revision of the trapdoor spider genus Aptostichus Simon (Araneae, Mygalomorphae, Euctenizidae). 2012. Bond . J.. ZooKeys. 252. 1–209. 10.3897/zookeys.252.3588. 3560839. 23378811. free.