There is a bug here in Maine we call a no-see-um. It is often mistakenly classified as a midge. They are so small they can come through a screen. When you do see them they appear as a speck of ash floating in the air. They are small but venomous little bastards - I have had bites from no-see-us swelled up like a hornet sting. I swear if no-see-ums were the size of bumble bees the human race would be extinct in the north country.
I dedicate this post to No-see-ums.