Do brown widow spiders ever not have the characteristic hour-glass markings on the underside of their abdomen?
There is a huge spider on the outside of my window, and I'll admit I'm freaking out right about now because it really looks like a brown widow (which is supposed to be twice as venomous as a black widow). However while it resembles it in all other ways - it's missing the hour-glass markings. So I'm just wondering if there are any other spiders that look similar? or if it's possible for a brown widow to not have the markings?