The Cyclophyllidea

The order Cyclophyllidea is characterized by having a scolex that typically bears four suckers. The genital openings are lateral, except in the case of the Mesocestoididae. This order of tapeworms contains almost all the major tapeworms found in domestic animals and man. Most of the other orders of tapeworms, with the exception of some members of the Pseudophyllidea, are parasites of fish, amphibia, and reptiles.