Digenea

noun plural

Di·​ge·​nea dī-ˈjē-nē-ə 

: a subclass, suborder, or other taxon of trematode worms which have a complex life cycle involving alternation of sexual reproduction as an internal parasite of a vertebrate with asexual reproduction in a mollusk and often including developmental stages in still other hosts and which include a number of parasites (as the Chinese liver fluke) of humans compare monogenea

digenean

-ən 

adjective or noun