Glypthelmins quieta
Like other Platyhelminthes, this parasite has no skeletal structure. These however are some structural aspects present in Glypthelmins quieta. They have an oral sucker near the anterior end with a very small pharynx, in the presence of pharyngeal glands. They also have a small ventral sucker and testes, of which the placement may vary amongst individuals. The oral sucker is larger than the ventral sucker.