I have a personal vendetta against mosquitoes, namely the ones in Japan, Virginia, and Wyoming, all of which are these huge, nasty things that come at you in swarms.
If this picture goes through, this is how bad they were in Wyoming:
(Note, the person in the picture, fortunately, wasn't me. I was standing behind the camera and to the right, trying to figure out why the heck the 98% DEET spray I was using had no effect on these things)