Cercospora is a fungus, not a scale.

Beyond that, extra wet seasons cause leaf spots. Perhaps you can temporarily protect it?

Scale or fungus, will it kill my pitanga? Is there something besides cutting it down to the nubs to heal it? Have I identified it correctly? Should I ask on the tropical fruit forum? Sorry about all the questions but Spring is on the way and it should be flowering time soon. Thanks for your help.
Batya

You asked "Is there something besides cutting it down to the nubs to heal it?"

Why would you want to do that? It only has a few leaf spots. It's likely a seasonal problem due to the weather.

Meaning I should wait for the weather to dry up and the spots will disappear? The spots are here and there becoming holes in the leaves, and the whole plant is looking very diseased, top to bottom. Any suggestions of what it might be and how I can counteract it? Thanks.

The spots are permanent.

If the disease is made worse by the wet weather, you could try rigging overhead protection.

If you have a local agricultural agency or seller, I suggest you contact them.