He's one of the New Guinea types - papuana. It's not so clear with the flash but the easiest way to tell the difference at first glance is the very distinct color change from dorsal to lateral. You can see it best towards the head on the last picture in this shoot. These also have a wider head and more blunt nose compared to olivaceus.
Better shot showing the two toned coloring on their body as well as head shape.
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