Hymenolepis spp.

Hymenolepis diminuta: eggs of H. nana must be distinguished from eggs of H. diminuta. Eggs of H. diminuta are larger (70-85 by 60-80 µm) and lack the polar filaments. Typical egg, measuring between 70 by 80 µm; spherical form and yellow-transparent cover. The internal membrane (that surrounds the oncosphere) has polar salients without filaments and six hooks on its interior.