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Photo#1824251
California spider - Castianeira

California spider - Castianeira
San Mateo County, California, USA
May 31, 2020
Size: 9mm
Also posted (with additional pictures) at https://www.inaturalist.org/observations/48062846

Moved to genus for now
Moved from ID Request. Leaning C. thalia

 
C. thalia...
Thanks! I think you are correct. The black & white with overlying red/orange marking is discussed here:
https://bugguide.net/node/view/614555
And it looks very similar to this one from the area:
https://bugguide.net/node/view/270832

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