This is the bottom of the spider sitting on its web. I'd love to know the species.
Could this be a triangulate house spider?
Can’t tell from the underside, the markings are on the top. Where you live and the color of the legs it is probably a Noble Cobweaver, Steatoda nobilis. They are in the same genus, but an introduced species from England. They’re very similar in behavior. A common name for the genus is False Widows because they are in the same family as Black Widows and Brown Widows. The good news is that you don’t need to worry about the venom of False Widows and they just want to avoid us. If you get a photo of the top of one… Read more »