Bnorikane on Nov 29, 2017November 29th, 2017, 1:37 am EST
My brother noticed a large swarm of flying insects all around his house over the Thanksgiving weekend. He lives in northern Indiana. They would fly around and land in the grass.
They look like chironomids to me although the wings are not long and thin and don't rest horizontally folded over the back. There's a small pond across the street.