A few days ago I noticed dozens of small flying insects flying around my arborvitae. They move too fast and are too small to take a picture of but they are about the size and appearance of fungus gnats when flying around so that could be a possibility. You can only make out the wings when they're flying but I think they may have a black body. They're easy to miss if you don't pay attention.
I also noticed them around some yews and could see them in a neighbor's deciduous shrub nearby but I don't know the type.
Don't see them anywhere else.
A bit of snow over the winter and last year. These trees get surrounded by a lot of snow. Last year there was a small amount of leaf loss due to snow. A neighbor lost a small evergreen shrub recently from what looked to me to be disease or insect damage which has me concerned.
Sorry I couldn't be any more descriptive but any help about what flying insects might be attracted to these would be helpful. I sprayed them with neem oil a couple of days ago but today they're back. Will do a couple follow up sprays every week or so.
Went to check for scale and to be honest not sure what to look for so posting some pics. There's browning on the inside but I always thought that was due to the density on the outside restricting light.
Another odd thing was when I went to check there were only a few insects now. The trees are now in shade and before when I saw them they were in direct sunlight.
Here are the pics if it helps identify anything.