Leiningen vs. The Ants: Carroll's analysis

In Carl Stephenson's short story, "Leiningen Versus the Ants," the protagonist must overcome a swarm of ants in order to protect the plantation he recently acquired. Not a very typical "horror" story, but I suppose we'll allow it. In my mind, a "horror" story is merely a story in which the main motivation is to frighten the reader. This is the difference between horror stories and stories which contain "scenes of horror" (specific scenes which are terrifying but contrary to the main agenda of the plot). Noel Carroll, however, wishes to attribute some sort of scientific method for answering the question of whether a story should be considered an actual "art horror" story. Okay, well let's play along.
In my analysis of "Leiningen Versus the Ants," the short story is most definitely a work of horror. The only agenda of this plot is to terrify readers. There are no political commentaries hidden within, it is not meant merely to entertain readers, and it certainly is not some romantic novel written in hopes of making readers wish their lives were this way. The solitary, obvious point is to tell a frightening tale.
Now, according to Carroll. Is there a monster? Maybe? Define monster. Oh, he does. A monster is any disgusting being whose existence is contrary to scientific understanding. So, again, is there a monster? Yes? No? Maybe? Ants exist in real life. However, ants which mass themselves "ten miles long, two miles wide" don't seem too prevelant anywhere. I've also yet to see ants which are intelligent enough to create rafts and cross a body of water...But ants do exist. Let's just assume that these are crazy ants, the kind science has no account for. Are ants disgusting? Some might think so. That seems like an arbitrary and completely subjective question to ask. But, for the sake of arguing, let's assume they are. Congratulations Carl Stephenson, if we assume there are ultra-intelligent, mass-gathering, digusting ants which science has no account for in your story, then according to Carroll you've just written a work of art horror. Hmm...Noel Carroll, sorry, but you're definitely no Aristotle.