They do look like they could be bugs. I'd need a better pic to know for sure.
I've had spider mites a couple times. I freaked out the first time. The last time I found something that got rid of them. They didn't show webbing at first. That seemed to come later, after there were a lot of them. They weren't as dark as whatever is on your leaves. They come in different varieties, though. They like hot and dry conditions, so lowering the temperature and raising the humidity can slow them down. Some said they don't like wind, but I think putting a fan on them just helps them spread.
Good luck with those. It looks like you caught them early. That's good.