Transparent Spots on Oncid Leaves?

[butterfly_muse]

I recently purchased an oncda. copper scarab 'brass brethren' and when I got it, there were a few black spots on the leaves - which I got under control (this guy is in quarantine), and while I was watering today, I noticed that a TON of the leaves have little transparent spots. Like maybe bugs are eating the leaves?

I just wanted to know if it is in fact bug damage, and what I should use to get rid of it, or if I need to do something else? The orchids are all inside for the winter, as it's too cold at night for them not to be. I have attached pictures. Any help would be great! thanks!