Initially I thought this was a little too colourful, but the more I look at it the more I like it. Nice shot. Love the eyes. Great 'teeth' too. I think the iridescence gives the impression that it's out of focus even though it's not. That probably hit you in a few votes.
To capture iridescence like this is no mean feat - hugely under-rated IMHO.
Thank you. I'm an absolute beginner in macro photography, so I didn't expect an outstanding result, but I was quite impressed about what the 5D was able to do at high ISO settings (and also, denoising software's efficiency). Iridescence was killed in my tries with flash strobes, so I tried with ambiant light only (on a very cloudy and windy day). A great learning experience.
Wow, this is an EXCELLENT shot of a metallic beetle, they are very difficult to not reflect yourself in - I'll assume this is from one of our best at DPC.