Cestoda

This is a feature they share with the cestoda (tapeworms), although the two groups are not closely related.

Rodentoleposis is a parasitic disease resulting from infection by cestoda.

It derives its name from Cestoda.

They are divided into Monogenea and Cestoda.

These groups of parasitic worms are Cestoda, Monogenea and Trematoda.

Segmentation can be confined only to ectodermally derived tissue, e.g., in the Cestoda tapeworms.

Tapeworms are the class Cestoda of segmented flatworms (Platyhelminthes).

Other common parasites include the nematode Dichelyne minutus and the cestoda Ligula pavlovskii.

Early classification divided the flatworms into four groups: Turbellaria, Trematoda, Monogenea and Cestoda.

Nematoda, Cestoda, Oligochaeta, Annelida etc.

However there is debate about whether the Cestoda and Monogenea can be combined as an intermediate monophyletic group, the Cercomeromorpha, within the Neodermata.

T. solium is a member of Phylum Platyhelminthes, class Cestoda, Order Cyclophyllidea and family Taeniidae.

Traditional classifications divide the Platyhelminthes into four groups: Turbellaria and the wholly parasitic Trematoda, Monogenea and Cestoda.

A similar tegument is found in other members of the Neodermata; a group of platyhelminths comprising the Digenea, Aspidogastrea, Monogenea and Cestoda.

Other internal parasites include Fasciola gigantica, a Trematoda; two types of Tapeworm of the Cestoda class and various Roundworms or nematodes.

Once thought to be related to the Monogenea, it is now recognised that they are closest to the Aspidogastrea and that the Monogenea are more closely allied with the Cestoda.

Formerly the Monogenea were included in Trematoda on the basis that these worms are also vermiform parasites, but modern phylogenetic studies have raised this group to the status of a sister class within the Platyhelminthes, along with the Cestoda .

These analyses had concluded the redefined Platyhelminthes, excluding Acoelomorpha, consists of two monophyletic subgroups, Catenulida and Rhabditophora, with Cestoda, Trematoda and Monogenea forming a monophyletic subgroup within one branch of the Rhabditophora.

It has been agreed since 1985 that each of the wholly parasitic platyhelminth groups (Cestoda, Monogenea and Trematoda) is monophyletic, and that together these form a larger monophyletic grouping, the Neodermata, in which the adults of all members have syncitium skins.

This classification had long been recognized to be artificial, and in 1985, Ehlers proposed a phylogenetically more correct classification, where the massively polyphyletic "Turbellaria" was split into a dozen orders, and Trematoda, Monogenea and Cestoda were joined in the new order Neodermata.

In traditional zoology texts, Platyhelminthes are divided into Turbellaria, which are mostly non parasitic animals such as planarians, and three entirely parasitic groups: Cestoda, Trematoda and Monogenea; however, since the turbellarians have since been proven not to be monophyletic, this classification is now deprecated.