I found two specimen on a Calocera cornea fungus, one near the bottom writhing in concert with a nematode?, which was just out of reach on the slimy decaying log, and this smaller specimen at the tip waving its front appendages in the air. The body is .2 mm long, .3 mm including the front appendages. I came across them by luck, intending to explore the fungus with a magnifying attachment when I noticed the movement of the the lower specimen. I do not know if they are the same species or what the relationship is with the worm. I also took video of the dance. Stack of two focus bracketed images with CombineZP.