I think that I have the same problem in my shed. Mine don't have wings, there arn't many, maybe 7 per leaf and on the smaller leaves I noticed some yellow spotting but that could be a nute problem or somthing. They are pretty small, can't see the legs they are so small. I would have taken a closer look but a couple days later the problem hadn't really evolved. They are maybe the size of a period on this post, maybe a little bigger. Their bodies appear compact, not like an ants. Mine are only on the underside. I think that they are thyeocoridae. If it's not a big isue for you than we probabley have the same thing.