Now, I'll grant you that there's no love lost between me and mosquitoes, and I'm glad I don't live near any midges. And black fly season is finally over here, and none of the cats seems to have fleas at the moment.
But damn, I hate those deerflies. Especially when I'm bicycling.

They don't just bite you once, they hang on and chew for a while. Then they move over and do it again. At least the bites don't itch afterward... they just bleed.