I'm writing a story in which I want to use a correctly-formed, binomial (Genus species) Latin name for a fictitious species of vampire bat. I want the name to mean "teeth of death", or something very similar, perhaps using "deadly". Since I'm going to refer to the thing later as G. species, or by just using the species part of the binomial name, I'd like to have "teeth" and "death" in the second part of the binomial. When I say I might want to talk about the species-name on its own, I mean in the same way that people talk of "Neanderthal" to mean Homo neanderthalensis.
I originally had Necrodontinae ecaudata (ecaudata was just a filler that I took from some other bat-species I'd seen). I've since learned that my name has at least three problems! First, N. ecaudata hides the "necro" part I want to emphasize. Second, I don't know if my translation makes sense. Last of all, I don't know enough Latin to know if I've obeyed the rules about case, agreement, etc.