Dark spots on leaves of plant beginning dormancy normal?

[estación seca]

I will reiterate what Roberta said about going to Sunset Valley Orchids to read the cultural information on Catasetinae. I suggest you reread it every change of season, and every time the orchid does something different, until you have it memorized. They require very different care from most orchids. If you put your name on Fred Clarke's mailing list you will get periodic newsletters telling you what to do at the current time of year.

Many people need to place their Catasetums in a dish with standing water during the growing season, or they are unable to water enough. They use so much water that many people need to refill this dish every day.