Since I was 10 years old, I kept a small notebook filled with information about numerous parasitic worm species as helminthology was (and still is) my special interest. This webpage will be the legacy of that.
A phyla of flatworms, including tapeworms, with only one opening (mouth and butthole are the same opening).
Vocab: Scolex (head), proboscis (elongated appendage from head), proglottid (segment), tegument (outer layer of skin).
Monogenea: Ectoparasites of fish.
Turbellaria: Non parasitic flatworms.
A phyla of roundworms including common pet parasites with two openings (mouth and butthole). 1 out of 6 humans are estimated to be infected with a nematode.
Vocab: Amphid (Olfactosensory invaginations on the head), spicule (needle-like mating structure in males that facilitate transmission of sperm).
Enoplea: Ancestral class, cylindrical esophagus, simple excretory system, pocket shaped amphids, smooth, marked with lines.
Chromadorea: Recently diverged class, bolbous esophagus, complex tubular excretory system, slit / pore / coil shaped amphids, may have rings or setae hairs.
A parasitic phyla of thorny headed worms with spiny probosci that can turn inside out. Related to rotifers. Can infect invertebrates, fish, amphibians, birds, and mammals, though it rarely infects humans.
A phyla of segmented worms including earthworms and leeches.