Hymenolepis diminuta

Virtual Microscope


The eggs exhibit a round to slightly oval shape, measuring between 70 and 85 µm in length and 60 to 80 µm in width. They possess a textured outer membrane and a delicate inner membrane. The area between these membranes appears either smooth or subtly granular. The oncosphere within the eggs is equipped with six hooks, and notably, there are no polar filaments extending into the space between the oncosphere and the outer shell.


Hymenolepis diminuta is a tapeworm that primarily infects rodents and is rarely observed in humans. The adults of this rat tapeworm measures from 20 to 60 cm in length