They're not really harmful to a plant unless there's a massive infestation.
They do suck sap from your plant. But, as I said very very little.
There is a recipe you can make up. Or ppl just use a spray bottle and knock them off.
It's the only thing. I know that does that.
Just look it up. But, 95% sure that's what it is.
SB, there's upon 1000s of species. 1 will do that. You will find it hard as they do move. I think they're more night feeders. So probably why you're finding it hard to see it.
The beginning of cultivation was outdoor, recently I changed it to indoor.
I looked under the leaves with the magnifying glass and found nothing.
Do I need to apply any product?