Parasite Name Generator

Real parasite names follow the same Linnaean rules as every other organism: a capitalised genus and a lowercase species epithet, usually built from Greek or Latin roots that describe the parasite's shape, host, or discoverer. Toxoplasma means bow-shaped, Necator americanus is the American killer, Enterobius vermicularis is the little worm that lives in the gut, and Cymothoa exigua, the tongue-eating louse, is one of the strangest animals ever named. Common names are blunter and often better for fiction: guinea worm, screwworm, liver fluke, brain-eating amoeba.

Fictional parasites borrow that structure. To coin a convincing Latin binomial, pick a root for what the parasite eats or where it lives (cerebro-, cardio-, ossi-, sanguis-) and add -phaga (eater), -vorax (devourer), -vermis (worm), or -trix, then finish with a species epithet such as insidiosa, tenax, or somnifer. Horror and science fiction also use quiet euphemisms (The Passenger, The Guest, The Kindness) that suggest the host no longer notices anything is wrong, and short folk names like Whisperworm or Hollowmind for something villagers might dread.

The list here mixes genuine species from medical parasitology with invented binomials, folk names, and the famous parasites of film and games, so you can pitch a creature at the right register, whether that is a textbook, a lab log, or a campfire story.