if you dont pick it up, there will be no ATF to ID.
I would get it... If it is white, its a goliath. If it has a sligh green tint to the top body, its a Vittatus or Brevis... either way, get it and post pics
You could buy a Vittatus and come home with a Goliath like I did
its hard to tell if you aren't already certain of the difference or have 2 infront of you to compare. I think the easiest way to tell is vitatus and brevis have obvious black lateral stripes which goliaths dont.