Timulla grotei?

Very fast moving wasp that looks like an ant.  Could only get this one picture before Bennett came over to "help" and ran through the weed the insect was on.  Unfortunately for little Bennett he was then strung by this guy.

Timulla sp.

I am fairly sure this is T. grotei based on this and this and this.  I guess if I am going to keep doing this I need something better than my iphone and should probably capture and freeze he insects for closer examination.  My only hesitation that this isn't T. grotei is that it appears to have 2 full white lines across it's abdomen instead one 1, but hat could be because of out of focus and/or because they run fast.

Taken late July Wheaton, IL