This spider is a hybrid between Brassia Rex (Brassia verrucosa x gireoudiana) x Oncidium schroederianum. You might know it better as Miltassia (from Miltonia schroederiana). Brassias want considerably high light conditions.
Interesting that it has none of the discernible floral traits that Miltonia schroederiana typically imparts in its hybrids.
Hopefully it at least inherited that amazing and powerful sweet clove fragrance. I had schroederiana (the species) years ago, but unfortunately I killed it and haven't found another source for it since.