Hexabothriidae is a family of

monogenea Monogeneans are a group of ectoparasitic flatworms commonly found on the skin, gills, or fins of fish. They have a direct lifecycle and do not require an intermediate host. Adults are hermaphrodites, meaning they have both male and female reprod ...

n parasites. The family name was proposed by Emmett W. Price in 1942.Price, E. W. 1942: North American monogenetic trematodes. V. The family Hexabothriidae n. n. (Polystomatoidea). Proceedings of the Helminthological Society of Washington, 9, 39-56
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The family includes 14-16

genera Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nomenclat ...

according to authors and about 60 species; all are parasitic on the

gill A gill () is a respiratory organ that many aquatic organisms use to extract dissolved oxygen from water and to excrete carbon dioxide. The gills of some species, such as hermit crabs, have adapted to allow respiration on land provided they are ...

s of

chondrichthyan Chondrichthyes (; ) is a class that contains the cartilaginous fishes that have skeletons primarily composed of cartilage. They can be contrasted with the Osteichthyes or ''bony fishes'', which have skeletons primarily composed of bone tissue. C ...

fishes (

rays Ray may refer to: Fish * Ray (fish), any cartilaginous fish of the superorder Batoidea * Ray (fish fin anatomy), a bony or horny spine on a fin Science and mathematics * Ray (geometry), half of a line proceeding from an initial point * Ray (gra ...

sharks Sharks are a group of elasmobranch fish characterized by a cartilaginous skeleton, five to seven gill slits on the sides of the head, and pectoral fins that are not fused to the head. Modern sharks are classified within the clade Selachimorp ...

and

chimaera Chimaeras are cartilaginous fish in the order Chimaeriformes , known informally as ghost sharks, rat fish, spookfish, or rabbit fish; the last three names are not to be confused with rattails, Opisthoproctidae, or Siganidae, respectively. At ...

s). Studies on phylogeny of monogeneans based on morphology,Boeger, W. A., & Kritsky, D. C. (2001). Phylogenetic relationships of the Monogenoidea. In D. T. J. Littlewood & R. A. Bray (Eds.), Interrelationships of the Platyhelminthes (pp. 92-102). London & New York: Taylor and Francis molecules or spermatozoa suggest that the Hexabothriidae are a basal group within the

Polyopisthocotylea Polyopisthocotylea is a subclass of parasitic flatworms in the class Monogenea. WoRMS (2019). Polyopisthocotylea. Accessed at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=119220 on 2019-02-08Yamaguti, S. (1963). Systema Helminthum Volum ...

Genera

;According to the World Register of Marine Species Bray, R. (2004). WoRMS (2015). Hexabothriidae Price, 1942. Accessed through: World Register of Marine Species a

on 2015-12-04 *'' Branchotenthes'' Bullard & Dippenaar, 2003 *'' Callorhynchocotyle'' Suriano & Incorvaia, 1982 *'' Dasyoncocotyle'' Hargis, 1955 *'' Epicotyle'' Euzet & Maillard, 1974 Euzet, Louis & Maillard, Claude, 1974: Les Monogènes Hexabothriidae Price, 1942. Historique, systématique, phylogenèse. Bulletin du Muséum National d'Histoire Naturelle, 3° série, 206, Zoologie 136, 113-141

*'' Erpocotyle'' Van Beneden & Hesse, 1863 *'' Heteronchocotyle'' Brooks, 1934 *'' Hexabothrium'' von Nordmann, 1840 *'' Mobulicola'' Patella & Bullard, 2013 *'' Neonchocotyle'' Ktari & Maillard, 1972 *'' Paraheteronchocotyle'' Mayes, Brooks & Thorson, 1981 ''(omitted in WoRMS but considered valid )'' *'' Pristonchocotyle'' Watson & Thorsen, 1976 *'' Protocotyle'' Euzet & Maillard, 1974 (example: ''

Protocotyle euzetmaillardi ''Protocotyle euzetmaillardi'' is a species of monogenean of the family Hexabothriidae. It is the third described species of the genus '' Protocotyle'', after '' Protocotyle grisea'' (Cerfontaine, 1899) Euzet & Maillard, 1974Euzet, L. & Mailla ...

'') *'' Pseudohexabothrium'' Brinkmann, 1952 Brinkmann, A. Jr. 1952. Fish trematodes from Norwegian waters. I. The history of fish trematode investigations in Norway and the Norwegian species of the order Monogenea. Universitetet i Bergen, Årbok. Naturvitenskapelig rekke (1), 1-134. *'' Rajonchocotyle'' Cerfontaine, 1899 Cerfontaine, Paul. 1899: Contribution à l'étude des Octocotylidés. V. Les Onchocotylinae. Archives de Biologie, 16, 345-478 + Plates 18-21. *'' Rhinobatonchocotyle'' Doran, 1953 *'' Squalonchocotyle'' Cerfontaine, 1899

References

{{Taxonbar, from=Q5022001 Polyopisthocotylea Platyhelminthes families