Their natural habitat (Mexico and Guatemala) is very seasonal even though it's close to the tropics. This is because of the high altitude at which they grow. I think they live in semi-deciduous forests, were they experience more cold and sun light (the trees will shed their leaves at this time) and almost no rainfall during the dry season. This is very similar to what deciduous dendrobiums from the Himalayas encounter in their habitat. Though the rainfall is much diminished, I'm sure there will be plenty of moisture from dew in the morning, which nonetheless will evaporate quickly in the sun. This goes without saying, but as with most orchids, don't water them in the evening in winter, do it in the morning so that they have time to dry out before the evening or they'll rot before your eyes.

BTW, I'm a sucker for species even if they are often more challenging (I like a good challenge ). I much prefer the well defined, sharp, intricate features of species than what I call the "pansification" of hybrids. After mixing many species together, everything ends up looking big, round and shapeless after a while ... like a pansy.