There can be huge variation in crosses made with certain species and C. aurantiaca is one of them. Here are several pictures of different plants from the same cross also using C. aurantiaca.
This plant is much larger and the flowers almost twice the size as well as being orange with a spotted lip:
http://www.orchidboard.com/community...Little_Ant.JPG
The other plant is smaller with red flowers and no spotting in the lip:
http://www.orchidboard.com/community...tle_Ant_3_.JPG
These are also examples of why it is so difficult to identify plants that have lost their tags. The variation within a cross makes almost any such id uncertain. It may look like a picture found on the web, but may be an entirely different cross.