I found this little bugger feasting on some flying ants that have been somehow appearing around my apartment. I was worried that it was a widow at first, but I'm color blind so I don't want to jump to any conclusions. After doing a little research I'd say it looks closest to a Red Back, but the shape of the line on the back seems a little extreme for a red back. I'm also not sure about the coloring, we tried to take these pictures but they didn't come out too great.
Looks like Steatoda triangulosa - http://www.biosurvey.ou.edu/okwild/misc/tricob.html
Not dangerous.
