Antrodiaetidae
Guides
Aliatypus gulosus
Aliatypus gulosus is a species of folding trapdoor spider in the family Antrodiaetidae. It was described by arachnologist Frederick A. Coyle in 1975. Like other members of its genus, it constructs burrows with hinged, camouflaged trapdoors to capture prey. The species is part of a group studied by the Jason Bond laboratory at UC Davis for its systematics and natural history.
Atypoides riversi
California Turret Spider, turret spider
Atypoides riversi, commonly known as the California turret spider, is a medium-sized mygalomorph spider endemic to northern and central California. It constructs distinctive burrows topped with a turret-like structure made of soil, vegetation, and silk. Females are larger than males, with body lengths ranging from 13 to 18 millimeters. Research indicates this species represents a species complex, with multiple genetically distinct populations separated by geographic barriers.