I hope it’s not a brown recluse! Does anyone know what this is?
Hi. First point I would like to make, “There are NO brown recluse spiders in California.”
As for your arachnid this is not a true spider, commonly called harvestman, they are in the order Opiliones.
They are totally harmless, produce no venom or poison, do not sting or have fangs. Nor do they produce silk.
They are scavengers usually within vegetation feeding on decaying matter and dead insects. Opertunistically, they may take on small live insects.
Monikers include daddy longlegs.
They can be identified from spiders for their single segmented body, true spiders have two segments.
A small harvestman just passing by: