The Class Cestoidea is further organized into finer groupings including:
- Subclass (2): Cestodaria · Eucestoda
- Order (15): Amphilinidea · Aporidea · Caryophyllidea · Cyclophyllidea · Diphyllidea · Gyrocotylidea · Haplobothriidea · Lecanicephalidea · Litobothridea · Nippotaeniidea · Proteocephalidea · Pseudophyllidea · Spathebothriidea · Tetraphyllidea · Trypanorhyncha
- Species: ZipcodeZoo has pages for 511 species and subspecies in the Class Cestoidea.
Amphilinidea (amphilinid) is the name given to an order of parasitic flatworms of the phylum Platyhelminthes. Amphilinids are commonly viewed as tapeworms, yet differ from true tapeworms (Eucestoda) as their bodies are unsegmented and not divided with proglottids. "Amphilinids are large worms which have a flattened leaf-like body. Only 8 amphilinid species are known." "The adults are hermaphroditic. A muscular proboscis is located at the anterior end, and is sometimes very weakly developed or absent." They live in the body cavities of freshwater turtles and teleost fish as adults, and in the bodies of various crustaceans as juveniles. Apart from a little studied parasitism of sturgeon, these flatworms have very little economic importance. Biologically, they have gained attention for their potential to shed light on the phylogeny of tapeworms. [more]
Tapeworms of the order Cyclophyllidea (the cyclophyllid cestodes) are the most important cestode parasites of humans and domesticated animals. All have multiple proglottid "segments," and all have four suckers on their scolex ("head"), though some may have other structures as well. Proglottids of this order have genital openings on one side (except in the family , which has genital openings on both sides), and a compact yolk gland or vitellarium posterior to the ovary. [more]
Pseudophyllid cestodes (order pseudophyllidea) are a kind of flatworm with multiple "segments" (proglottids) and two bothria or "sucking grooves" as adults. Proglottids are identifiably pseudophyllid as the genital pore and uterine pore are located on the mid-ventral surface, and the ovary is bilobed ("dumbbell-shaped"). [more]
Tetraphyllidea is a large tapeworm order that contains some 60 genera and about 800 described species. Tetraphyllideans are remarkable for their scolex morphologies, which are the most varied and morphologically complex amongst all tapeworm orders. [more]
At least 35 species and subspecies belong to the Order Trypanorhyncha.
More info about the Order Trypanorhyncha may be found here.
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