Investigate thrips. My outside plants got that really bad this year and I remember it being suggested it due to thrips. Never did find out for sure. I still got some tomatoes off the plant, but those plants sure were ugly.
Please post back if you figure it out.

Thanks "chuck" for sharing the image. I couldn't figure out it. But still eager to know what is it. Thanks.

To avoid âÂÂthripsâÂÂ, clean up the entire crop at the end of the season thoroughly. When removing plants, do not leave them within or near the greenhouse or the green space; as the surviving thrips may re-enter in your yield. Wash the greenhouse structure or grow space with a strong detergent with some hot water.

Get some NEEM oil!

Yes, you can also prefer âÂÂneem oilâÂÂ. ItâÂÂs organic and safe. My friend uses it on peppers and his summer & winter squash. You can also use insecticidal soap, which is non toxic. More people advise for using dish soap; but itâÂÂs not preferable. The soap you use should be real soap, with fatty acids in it.