They aren't moving and don't seem to be attached, as the come off easily when I wipe the leaves with a tissue. They are on two plants that were right next to each other but not the basil that was also next to one of them
Aphids when they molt and leave their old exoskeletons behind.
https://www.rhs.org.uk/biodiversity/aphids
Everyone is saying aphids but those look more like young thrips to me. Same way to get of them though. Physical removal of the eggs and a good plant soap should get rid of them.
Couple more pics
Mild solution of pine oil soap and water sprayed onto the leaves will likely kill whatever they are but wont harm the plant or you.
I also saw the other pics. If you zoom in closely, you can see fat aphids. Those white flakes are their exoskeletons they shed when maturing.
Get some neem oil and silicate, that will get rid of them and make the plant more resistant for upcoming generations of the pest.
Have you considered using a spinosad solution? In the past, I’ve had luck with Captain Jack’s Dead Bug Brew.
Those look a lot like white spider mites.
Grated Parmesan cheese.
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