Insect identifier for California Agriculture. Love me some velvet ants!

https://www.cdfa.ca.gov/plant/PPD/staff/kwilliams.html
https://www.researchgate.net/profile/Kevin_Williams8

Author of Princeton field guide: Velvet Ants of North America.
https://press.princeton.edu/books/paperback/9780691212043/velvet-ants-of-north-america