That appears to be an Arizona blonde tarantula, Aphonopelma chalcodes. This is a docile tarantula species and is not prone to biting. However, all species of Aphonopelma can release irritating hairs from their abdomens that can cause an itchy rash. I hope you didn’t kill it!
Thanks James! I would like to add : please don’t tell people where you found it. Wildlife poachers in the “exotic pet” trade have posed as volunteers on our site claiming to need the zip code or specific location for the identification. The poachers are a threat to the survival of some spider species.
I agree. I also believe there is a difference between poaching and collecting. Collecting a mature female and male, breeding them, and then rearing the slings is a much better route.