This lil guy scared the crap out of me. Spun a web over the entire bottom of a seldom used ashtray that was sitting in an out of the way place, in front of a window.
Aww, you probably scared him even more. This is a Western Parson Spider, Herpyllus ecclesiasticus. They are named for their markings resembling a parson’s vestments. I don’t know what a parson wears, guess it’s something like your spider. These are speedy little guys, they chase prey instead of trapping with a web.
Given the location east of the Rocky Mountains, I would rather suggest eastern parson spider (Herpyllus ecclesiasticus)
Wikipedia mentions the markings – appearing to start below the cephalothorax, or “neck” region – resembles the old-style cravat worn by clergy in the 28th century. Hmmm