Cork-lid
Guides
Bothriocyrtum californicum
California trapdoor spider, California cork-lid trapdoor spider
Bothriocyrtum californicum is a cork-lid trapdoor spider endemic to arid regions of the southwestern United States and northwestern Mexico. This mygalomorph spider constructs burrows with a hinged, cork-like door made of soil and silk, which it uses to ambush passing prey. Males are smaller than females, a reversal of typical sexual dimorphism in spiders. The species is notable as the first representative of its genus and family to have its mitochondrial genome sequenced.
Hebestatis theveneti
Thevenet's Trapdoor Spider
Hebestatis theveneti is a species of cork-lid trapdoor spider in the family Halonoproctidae. It is native to the United States and constructs burrows sealed with camouflaged, hinged trapdoors. The species is one of several trapdoor spiders maintained in research collections for study of arachnid behavior and systematics.