conco-bellatulum versus wenshanense
I agree, that what we call Paph wenshanense are probably natural hybrids between Paph. bellatulum and Paph. concolor, but they don't necessarily have to be 50% bellatulum and 50 % concolor. Paph concolor and Paph bellatulum were probably growing in the same area's and over time those 2 species probably interbred. Their offspring probably bred back and forth to both species, and back to it self. As a result you get a population of plants that some individuals look exactly intermediate to both parents, and some plants that look more like one parent (the picture above is a good example of one that resembles more it's "concolor" ancestry) and other plants that resemble more the other parent. Another term besides "natural hybrid" is "hybrid swarm".
You can't really compare the man-made hybrid Paph. concolor x Paph. bellatulum to Paph. wenshanense, as the man made hybrid is exactly 50% concolor and 50% bellatulum. Also when you are dealing with a "hybrid swarm" like Paph. wenshanense you get different selection pressures, so some genes may have gotten lost over time, and some genes may have mutated, so those plants will never look exactly the same (or be genetically the same) as the man made Paph. Conco-bellatulum.
So Paphioboy to answer your question, I think what you have is a pure Paph. wenshanense, but just an individual who has more Paph. concolor genes, so the plant resembles more a Paph. concolor.
Robert