confirmation on pest??

[tarheelchick]

I am thinking this is a flea beetle. At least I've been calling it that for several weeks as I try to get rid of them. They are all over my cucumber leaves and occasionally I see them on my tomato leaves, but I think they prefer the cucumber leaf for some reason?? Can y'all confirm that this a flea beetle from this picture? They are tiny, black, and seem to scoot/jump when I flick them. They roam both the top and bottom of the leaves and act like they own the place.

I have been treating with neem oil spraying and in-between spraying I dust with with DE (you may see some white residue on the leave). I also have up some yellow sticky cards, but I mostly catch flies with those. Any other ideas? I am trying to stay organic.