Post it to Youtube first then you can post here with that vid. I am not sure how else to do that, I don't think the let you post vids, but if you post on youtube then someone here can click that link and see it on there.
I know you more than likely don't want to do that, but I believe it's the only way.
The pictures are good enough to see, can you switch your lights to just white ?
Look up Aphids on the web and you can see it's pretty close to what my grow book shows the same thing.
also they can vary in color
There about the size of a pinhead, and you can see them good with naked eye, but if you use a 10x scope you will be able to identify it then.
If it is aphids your in not to bad of shape their fairly easy to get rid of.
Like I said Good Luck.