Bug FAQCalifornia Turret Spider
Atypoides riversi · Order: Araneae · Family: Antrodiaetidae
Also called: turret spider
Adults measure about 13 to 18 mm in length, with females being the larger sex. It lives in northern California, where it builds a burrow topped with a turret made of soil, plant material and silk.
Source: Wikipedia
Size
Adults are 13 to 18 mm long, females larger than males.
Source: Wikipedia
Where it lives
It constructs a burrow with a turret of soil, vegetation and silk.
Source: Wikipedia
Where it comes from
It is native to northern California.
Source: Wikipedia
Where it is found in the US
Recorded in 2 of 51 states and DC. Most records: California, Nevada.
Darker = more records. Counts are museum and citizen-science records, not population size.
Source: GBIF
Status: native in North America; native in United States. Source: iNaturalist
Months it is reported in the US
Source: GBIF
More photos
Sources
- Wikipedia: https://en.wikipedia.org/wiki/Atypoides_riversi
Look it up elsewhere: GBIF · iNaturalist · BugGuide · ITIS · Wikipedia
Text written 2026-10-23 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-23.