I’ve been using the “mosquito” because a midge isn’t easily drawn, on forums since 2003.
It started on Woodwork forums when I discovered I could use an animated gif so I made this one and back then when forums were simple and I was devious, I managed to hack that bit underneath the avatar that says “esteemed member” and all that sort of nonesense to read: "pretend my avatar moves".
I’ve just checked and it’s still there! Twenty years isn’t bad!
On social media once I, hit my sixties, grew up and started using parts of my real name, I decided to use parts of my real head. It used to be a gif too, where one eye winked every twenty seconds or so (for several years I had a muscular paralysis which affected one eye) , just enough to annoy the you know what out of anyone.
The sunglasses appeared by popular request to cover that up and they’ve been there for at least ten years so I don’t think I’ll be taking them off any time soon .
But here the midge stays.
I do have an even more annoying midge footer though which I’ll happily add if anyone thinks that would be a good idea! 
