You are good at finding and shooting these. I wonder if I have seen one but not realised it. I read on the www.web that the ant mimicking jumping spider Myrmarachne formicaria, found in North America, walks in a winding path like an ant following a chemical trail also that they pause often and raise their forelegs into an antennae-like posture. I also read that they can be found in tubular sacs of silk inside a rolled-up leaf.