That one is a Clowesetum (Clowesia x Catasetum). Leaves likely have been munched a bit (thin leaved plants are vulnerable), spider mites are especially likely to be culprits for the speckles, etc. This time of year, pretty normal for Catasetinae. If you suspect spidermites you could spray (especially undersides of leaves), Mostly to keep them out of other plants. But the Catasetinae are just thinking "autumn" ... some leaves start to get ratty ahead of dormancy. Those leaves are going to be gone in a couple of months. You certainly don't want to be even thinking about repotting them now. (If they're outgrowing pots, the time is during dormancy in the winter) . One of the lovely things about Catasetinae is that they reinvent themselves every year - new growth brings new leaves, the old leaves are long gone.