Not sure I will have time to get back to take another photo, but I think it is the same plant that I photographed on 25th October 2014 - sighting 27195
I have confirmed it as D. semilunulata, although the colour is usually a more orange red. Julie Lindner has recently posted a couple of similar looking plants from Farrer Ridge. i suggested a front view of the flower which would have shown the dorsal sepal (quite rounded) and labellum side lobes (broadly rounded) more clearly.