Amphilinidea

tapeworm order

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Last updated

June 18, 2026

Quick Summary

The Amphilinidea are an order of tapeworms within the subclass Cestodaria. These unsegmented tapeworms are intestinal parasites of bony fish (teleosts). They are characterized by a long, N-shaped uterus and genital pores located near the posterior end of the body. The Amphilinidea are part of the larger phylum Platyhelminthes, commonly known as flatworms. Flatworms are unsegmented, triploblastic animals that lack circulatory, respiratory, and skeletal systems.1

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flatworm
Annotated classification
Order Amphilinidea Uterus long and N-shaped; genital pores at or near posterior extremity; intestinal parasites of teleosts (bony fish); 105 species. Order Caryophyllidea Uterus a coiled tube; genital pore well separated from posterior extremity; intestinal parasites of teleosts, occasionally in annelids; about 85 species.
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Order Amphilinidea Uterus long and N-shaped; genital pores at or near posterior extremity; intestinal parasites of teleosts (bony fish); 105 species. Order Caryophyllidea Uterus a coiled tube; genital pore well separated from posterior extremity; intestinal parasites of teleosts, occasionally in annelids; about 85 species.
Read More