This is not very clear (those chelicerae are tiny!) but the cheliceral hand has four setae. I got some shots of the chelicerae from other angles too, and can't find a fifth in any of them. Range seems to exclude Parachelifer too.

Photo taken with everything but his chelicerae and palps under the slide. He waved the latter around which often obscured the chelicerae, but I just waited until they were out of the way before snapping the shot. I used ordinary diffused light; back/bottom lighting made the setae really hard to see at this crummy level of detail.