Edema?

[rbarata]

Hello, my friends

Need your help to identify what's this spot.

First let me put this in context.

I really don't know what orchid this is. I think it's a xylobium but don't really know.


After my suspitions of a spider mite infestation, based on the spots bellow, I decided to spry it with a solution of alcohol + dish detergent.




After the spray I've watered it with plenty of water to remove the remains of the solution from the medium (I didn't do it for the leaves). As a side note I've watered this plant the day before this treatment.

The next day I've noticed this spot which seems to be spreading (haven't confirmed yet). And there's another one smaller on the other leaf. It seems to be on the underside of the leaf (although it has reached the top side also).