Site Help: HELP ID this strange flying insect, 5 by JC33

JC33 wrote:
Last year we had these all over our cedar fence and metal shed. They are a burgundy color with striped wings and large heads. I would think they are a type of flying ant but I can't find anything with an ID online.

Last year we had huge trees taken down in our yard, and they seemed to have appeared after the trees were removed. This year there a tons of them in the same vicinity but now also all over our brick house and patio. I've only found one picture online of it but that person did not know what it was.