Thanks, xNellynelx, for clarifying for me.
I am planning on GMing this AP, and I haven't been able to find any reference to this creature or something resembling this creature in any of the AP books. I've also done a reverse image search - no dice.
Could this be from a future Paizo publication, maybe the delayed Absalom book? Did I miss something completely obvious? More than anything, why am I the only one I can find on the internet crazy enough to care about this to this extent? lol