Clonorchis sinensis (d)

Clonorchis sinensis (d)A chinese liver fluke, here an egg.The following classes of helminths are classified:

Trematodes (flukes)

Schistosoma mansonii
Schistosoma haematobium
Liver fluke

Cestodes (tapeworms)

Taenia: Taenia saginata (beef tapeworm) and taenia solium (pork tapeworm)
Echinococcus: e.g. echinococcus multilocularis and echinococcus granulosus (dog tapeworm)

Nematodes (roundworms)

Ascarides: e.g. ascaris lumbricoides
Oxyurida: e.g. enterobius vermicularis (pinworm)
Ancylostoma duodenale (old world hookworm)
Filaria: e.g. Wucheria bancrofti, Loa loa and Onchocerca volvulus

Possibly the Acanthocephala (thorny-headed worms) and the Pentastomida (tongue worms) can also be classified as helminths, although they belong to the class of arthropodes.