Yes, those are totally ear-wings. Yep, like Dumbo. Six limbs seemed strange, so I figured "hey, why not evolve ear-wings?" aaaand... yeah. This happened.
the Queen and Vitalia, it goes back to an earlier story I dabbled with as a sophomore in college. In its earliest form, it was a rather vague camel-like creature (actually, it changed every week, but the camel-form is all I have records of.) Here's an ancient tiny doodle, and some early comic pages from a short-lived comic based on the early story (yes, Vitalia was pretty obnoxious back then.) (And a princess.) The Singlebeeste was originally "tamed" by the then Princess Vitalia, and became sort of a companion and mount... How and why it was tamed never really made sense, but most of that story made no sense anyway.
Later, when I started developing the Wayward Queen around 2005-2006, the Singlebeeste happened to fit nicely into the plot, so I added it in. And redesigned it completely. Here's some of the development doodles for the current Singlebeeste... It seems to have changed from a winged-camel-thing to some sort of horned-dog-bear with ear wings... I'm not sure which version is more goofy and implausible, but this one's cuter.