Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
California spider - Castianeira

California spider - Castianeira
San Mateo County, California, USA
May 31, 2020
Size: 9mm
Also posted (with additional pictures) at

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:
And it looks very similar to this one from the area: