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| Apororhynchus | |
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| Drawing of Apororhynchus hemignathi by Arthur Shipley in 1896. This is the original sketch of the first species in the genus Apororhynchus to be described. | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Acanthocephala |
| Class: | Archiacanthocephala |
| Order: | Apororhynchida Thapar, 1927[2] |
| Family: | Apororhynchidae Shipley, 1899[1] |
| Genus: | Apororhynchus Shipley, 1899 |
| Type species | |
| Apororhynchus hemignathi (Shipley, 1896)
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| Other species | |
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Apororhynchus is a genus of small parasitic spiny-headed (or thorny-headed) worms. It is the only genus in the family Apororhynchidae, which in turn is the only member of the order Apororhynchida.[3] A lack of features commonly found in the phylum Acanthocephala (primarily musculature) suggests an evolutionary branching from the other three orders of class Archiacanthocephala; however no genetic analysis has been completed to determine the evolutionary relationship between species. The distinguishing features of this order among archiacanthocephalans is a highly enlarged proboscis which contain small hooks. The musculature around the proboscis (the proboscis receptacle and receptacle protrusor) is also structured differently in this order. This genus contains six species that are distributed globally, being collected sporadically in Hawaii, Europe, North America, South America, and Asia. These worms exclusively parasitize birds by attaching themselves around the cloaca using their hook-covered proboscis. The bird hosts are of different orders, including owls, waders, and passerines. Infestation by an Apororhynchus species may cause enteritis and anemia.
- ^ Shipley, Arthur E. (1897). "Memoirs: On Arhynchus hemignathi, a new Genus of Acanthocephala" (PDF). Quarterly Journal of Microscopical Science. s2-39 (1896–1897): 207–218. OCLC 83796449. Archived (PDF) from the original on 9 November 2012. Retrieved 9 September 2010.
- ^ Thapar, Gobind Singh (1927). "On Acanthogyrus n.g. from the Intestine of the Indian Fish Labeo rohita, with a Note on the Classification of the Acanthocephala". Journal of Helminthology. 5 (2): 109–120. doi:10.1017/S0022149X00018678.
- ^ "Subject Index". The Journal of Parasitology. 45: 162–286. 1959. ISSN 0022-3395. JSTOR 3274895.