description Cork-lid Trapdoor Spider (Aptostichus simus) Overview
The cork-lid trapdoor spider (Aptostichus simus) is a species of mygalomorph spider native to the coastal dune environments of California. Like other members of its infraorder, it is a fossorial species that constructs deep, underground burrows lined with silk. The spider is distinguished by the thick, cork-like doors it uses to seal its burrow entrance, providing a tight seal against predators and environmental conditions. As an ambush predator, it waits beneath the disguised door to capture passing insects.
help Cork-lid Trapdoor Spider (Aptostichus simus) FAQ
How does Aptostichus simus build its cork-like trapdoor?
The spider lines an underground burrow with silk and constructs a thick lid from silk, soil, and nearby material. The finished door fits the entrance closely and helps conceal the burrow in coastal sand.
Where does the cork-lid trapdoor spider live?
Aptostichus simus is associated with coastal dune habitats in Southern California. Its specialized burrows depend on intact patches of suitable sandy soil and vegetation.
How does a cork-lid trapdoor spider catch food?
It waits inside the sealed burrow and senses vibrations from prey moving nearby. The spider then opens the lid, lunges out to capture an insect, and retreats underground.
Why is Aptostichus simus difficult to spot in the wild?
The spider spends most of its life underground, and its soil-covered door blends into the surrounding dune surface. Females are especially sedentary, while mature males are more likely to be seen wandering in search of mates.
explore Explore More
Similar to Cork-lid Trapdoor Spider (Aptostichus simus)
ui.x_see_all arrow_forward
Reviews & Comments
Write a Review
Be the first to review
Share your thoughts with the community and help others make better decisions.
