If you are not familiar with these little suckers, take care, they are hard to get rid of. They are just barely visible without magnification. A 30x or 40x microscope gives you a good view. Some people think they are cute. I'm not one of them.
Thrips damage
eeewwww the dreaded thrips! LOL.That's a bad word around here ^_^
Wow,I've never seen thrips do that much damage!!
There might be something else going on here besides thrips, but thrips are definitely part of the problem. A few days ago I sprayed my infected plants with one of the Safer sprays containing pyrethrins. It seems to have done the job, but I will repeat, as per the label instructions.
It almost looks like a burn,like fertilizer or chemical damage.