Satin Green Forester

A day flying moth (Pollanisus viridipulverulenta) that is the very devil to photograph. 

A beautiful little creature - but if you get it at the wrong angle it's a dull looking browny thing that you wouldn't look at twice.  Get it at the right angle, and the iridescence shins blue green, and it's amazing.  It looks even better in large.

If you want to have a good laugh, take a look at the web page on Drop Bears put up by the Australian Museum, 

If you are from overseas, please don't take this literally - the final sentence should make it all clear.