Scale? Leaf residue from pest?
I'm not sure what I'm looking at here on my hoya finlaysonii. I know there are different types of scale out there, but this is not the typical houseplant scale with brownish colored bumps.
The marks are slightlu raised, white and looks almost tarter like. Some are small, not fully rounded, some are streaks.
Is this a certain type of scale?
Or. maybe this is thrip/pest damage and the white is the juice from the leaves scabbing over?
Here's a couple of pictures