About 4 hours work. Kept the model simple but rigged it, which took a while, as did positioning all the ants on the branch. Kept the materials very simple and concentrated on trying to light it well. Not sure how I did TBH. Also, even at 2500 samples I ended up with some objectionable artifacts in the far distance glares, couldn't get rid of them in the render so I just blurred them in the compositor :D
