Pseudophyllidea

noun plural

Pseu·​do·​phyl·​lid·​ea ˌsüd-ō-fi-ˈlid-ē-ə 

: an order of the class Cestoda comprising tapeworms with two sucking grooves on the unarmed scolex and the vitellaria scattered throughout the parenchyma and including numerous parasites of fish-eating vertebrates (as the medically important fish tapeworm of humans) see diphyllobothriidae