Anyway, as for the behaviorally-challenged ants per the article, I don't know of anyone personally this far north who has encountered them--yet. Your account of the bites, though, with the rash is consistent with my dogs' reaction. Maybe a field study is in order this wkend.
I have a friend in Midlothian who’s tied in with a few vets in the area. I’m going to shoot her a note and see if she’s heard of anything like this up that way. Let you know if I find out anything interesting....