Arhythmorhynchus

Arhythmorhynchus is a genus of parasitic worms in Acanthocephala (thorny-headed worms, also known as spiny-headed worms) belonging to the family Polymorphidae. ==Taxonomy== The genus was described by Lühe in 1911. The National Center for Biotechnology Information does not indicate that any phylogenetic analysis has been published on any Arhythmorhynchus species that would confirm its position as a unique genus in the family Polymorphidae.

==Description== Arhythmorhynchus species consist of a proboscis covered in hooks and a long trunk. ==Species== The genus Arhythmorhynchus contains many species. Arhythmorhynchus capellae (Yamaguti, 1935) Arhythmorhynchus comptus Van Cleave & Rausch, 1950 Arhythmorhynchus distinctus Baer, 1956 Arhythmorhynchus eroliae (Yamaguti, 1939) Arhythmorhynchus frassoni (Molin, 1858) Arhythmorhynchus frontospinosus (Tubangui, 1935) Arhythmorhynchus jeffreyi Schmidt, 1973 Arhythmorhynchus johnstoni Golvan, 1960 Arhythmorhynchus limosae Edmonds, 1971 Arhythmorhynchus petrotschenkoi Schmidt, 1969 Arhythmorhynchus plicatus (von Linstow, 1883) Arhythmorhynchus pumilirostris Van Cleave, 1916 Arhythmorhynchus rubicundus (Molin, 1859) Arhythmorhynchus siluricola Dollfus, 1929 Arhythmorhynchus suecicus Lundström, 1942 Arhythmorhynchus teres Van Cleave, 1921 Arhythmorhynchus tigrinus Moghe & Das, 1953 Arhythmorhynchus trichocephalus (Leuckart, 1876) Arhythmorhynchus tringi Gubanov, 1952 Arhythmorhynchus turbidus (Van Cleave, 1937) Arhythmorhynchus uncinatus (Kaiser, 1893) Arhythmorhynchus villoti Golvan, 1994 Arhythmorhynchus xeni Atrashkevich, 1978