Mobile microdot

I was about to open the landing window when I noticed what I took to be a speck of dirt moving steadily and on much closer inspection I found it to be the tiniest of ladybirds. In a cooperative gesture, to register scale, it was passing the small key to the window lock and it  looks as though it could fit into the hole in the key about 4 times over. 
The last of the back blips to hopefully get me back on track.