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Echinococcus gran LifeCycle lg.jpg
Life cycle of Echinococcus granulosus
Scientific classification e
Kingdom: Animalia
Phylum: Platyhelminthes
Class: Cestoda
Order: Cyclophyllidea
Family: Taeniidae
Ludwig, 1886

The Taeniidae /tɪˈn.ɪd/ are a family of tapeworms. It is the largest family representing the order Cyclophyllidea.[1] It includes many species of medical and veterinary importance, as Taenia solium (pork tapeworm), Taenia saginata (beef tapeworm), and Echinococcus granulosus. The Taeniidae are parasites of mammals and many are infectious to humans.


The family includes four genera:

Life cycle[edit]

Taeniidae parasites are distinguished by their terrestrial lifecycles, which include a dormant stage called a metacestode. These develop in the intermediate host's tissue when eggs are consumed. The eggs hatch into an oncosphere, which passes through the intestinal wall and forms the metacestode. An example is either cysticercoid, cysticercus, or a hydatid cyst. The definitive host is infected when the metacestode is consumed.


  1. ^ "taeniid". www.aavp.org. 16 July 2014. Retrieved 20 February 2019.
  2. ^ Nakao, Minoru; Lavikainen, Antti; Iwaki, Takashi; Haukisalmi, Voitto; Konyaev, Sergey; Oku, Yuzaburo; Okamoto, Munehiro; Ito, Akira (2013). "Molecular phylogeny of the genus Taenia (Cestoda: Taeniidae): Proposals for the resurrection of Hydatigera Lamarck, 1816 and the creation of a new genus Versteria". International Journal for Parasitology. 43 (6): 427–437. doi:10.1016/j.ijpara.2012.11.014. ISSN 0020-7519.