1. Prepared by: Dr. Nancy Osman Lecturer of Parasitology
Phylum Platy Helminthes
Class Cestodes
Cestodes
Prepared by:
Dr. Nancy Osman
Lecturer of Parasitology

2. Taenia saginata
Adult:4-6 meters has quadrate shaped scolex with four suckers with no rostellum or hooks.

3. Taenia solium
Adult:measures up 2-4 meters. Scolex has four suckers and rostellum carring double circles of hooks.
GRAVID segment:12x6mm,7-12 lateral segments

4. Taenia egg Egg: size:30-40um shape:spherical,
thick and radially striated
colour:yellowish brown
contain:hexacanth embryo

5. Hymenolepis nana Disease G.D Size Scolex Hymenolepiasis nana
Cosmopolitan
G.D
1-3 cm
Size
Rostellum + hooks
Scolex

6. Hymenolepis nana egg

7. Echinococcus granulosus “Hydatid disease”
Adult :
Smallest tapeworm . “3-6mm”
Scolex is globular .
Double crown of hooks .
4 suckers .

8. Morphology
The adult tapeworm is about 3-6 mm long and has three proglottids ("segments") immature, mature and gravid .
 E. granulosus has four suckers on its scolex ("head"), and  a rostellum with hooks.