
Baby or juvenile noble false widow, Steatoda nobilis
Hard to take pictures of when it's running away from you. Almost a centimeter in size, the babies start out yellow before darkening. I let it go. outside afterwards. They made their home base outside the door among lots of other species.

"Steatoda nobilis" is a spider in the genus "Steatoda", known in the United Kingdom as the noble false widow, as it superficially resembles and is frequently mistaken for the black widow and other spiders in the genus "Latrodectus". It is often referred to as "the" false widow, although "false widow" is a more general term applied to a wider group of species with this resemblance. It is a moderately medically significant spider, with most bites resulting in symptoms similar to a bee or wasp sting... more