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Thorny-headed worms

Acanthocephala

Most of the acanthocephalans in the collection have not yet been processed and identified, and many more are yet to come to this page. On the left is a male of Leptorhynchoides thecatus, a common acanth in sunfishes and black basses. On the right is the proboscis of a species of Neoechinorhynchus, the most speciose genus in the phylum Acanthocephala.

Below is Neoechinorhynchus prolixus, a common parasite of river carpsuckers in the Thicket (Carpiodes carpio). On the left is the anterior 1/3 of a gravid female; in the middle is the proboscis of a female; and on the right is the posterior end of a female, showing the uterine bell and selector aparatus.

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