Helicometra is a genus of trematodes in the class Opecoelidae. It is synonymous with Allostenopera Baeva, 1968, Metahelicometra Yamaguti, 1971, and Stenopera Manter, 1933. Its type species is H. fasciata (Rudolphi, 1819). They are distinguished by their unique spiral uterus, from which their name is derived.
Species Helicometra aegyptensis Hassanine, 2007Hassanine, R. (2007). Trematodes from Red Sea fishes: On the validity of Helicometra marmoratae Nagaty et Abdel-Aal, 1962 and the description of H. aegyptense sp. nov. (Opecoelidae Ozaki, 1925). Acta Parasitologica. 52(1): 18-23. Helicometra antarcticae Holloway & Bier, 1968Zdzitowiecki, K. (1997). Antarctic Digenea, parasites of fishes. Synopses of the Antarctic Benthos. Koeltz Scientific Books, Koenigstein, 156. Helicometra aposinuata Pritchard, 1966 Helicometra bassensis Woolcock, 1935 Helicometra borneoensis Fischthal & Kuntz, 1965 Helicometra boseli Nagaty, 1956 Helicometra dalianensis (Li, Qiu & Zhang, 1989)Liu J.Y. [Ruiyu] (ed.). (2008). Checklist of marine biota of China seas. China Science Press. 1267 pp. Helicometra dorabi (Mamaev & Oshmarin, 1966) Helicometra equilata (Manter, 1933)Overstreet, R. M., J. O. Cook, and R. W. Heard. 2009. Trematoda (Platyhelminthes) of the Gulf of Mexico, Pp. 419–486 in Felder, D.L. and D.K. Camp (eds.), Gulf of Mexico–Origins, Waters, and Biota. Biodiversity. Texas A&M Press, College Station, Texas. Helicometra fasciata (Rudolphi, 1819)Gibson, D.I. (2001). Digenea, in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50: pp. 136-142 Helicometra filamentosa Madhavi, 1975 Helicometra fusiformis Wang, Wang & Zhang, 1992 Helicometra gibsoni Meenakshi, Madhavi & Swarnkumari, 1993 Helicometra gomphosi Yamaguti, 1970 Helicometra grandora Manter, 1954Johns, P.; Newman, L.J.; Holleman, J.J.; Dawson, E.W.; Sterrer, W.; Allison, F.R.; Diggles, B.K.; Andrews, J.R.H.; Hine, P.M.; McKenna, P.B.; Poulin, R. (2009). Phylum Platyhelminthes: flatworms, tapeworms, flukes, in: Gordon, D.P. (Ed.) (2009). New Zealand inventory of biodiversity: 1. Kingdom Animalia: Radiata, Lophotrochozoa, Deuterostomia. pp. 102-128. Helicometra hapalogenyos Wang, Wang & Zhang, 1992 Helicometra indica Agrawal, 1964 Helicometra insolita Polyanski, 1955 Helicometra interrupta Hassanine, 2005Hassanine. (2005). Trematodes from Red Sea fishes: Gibsonius aegyptensis gen. nov., sp. nov. (Lepocreadiidae Odhner, 1905) and Helicometra interrupta sp. nov. (Opecoelidae Ozaki, 1925). Acta Parasitologica. 50(4), 276-280. Helicometra kyliotrema Pritchard, 1966 Helicometra manteri Andres, Ray, Pulis, Curran & Overstreet, 2014Andres, M. J.; Ray, C. L.; Pulis, E. E.; Curran, S. S.; Overstreet, R. M. (2014). Molecular characterization of two opecoelid trematodes from fishes in the Gulf of Mexico, with a description of a new species of Helicometra. Acta Parasitologica. 59(3): 405-412. Helicometra nasae Nagaty & Abdel-Aal, 1962 Helicometra neoscorpaenae Wang, Wang & Zhang, 1992 Helicometra overstreeti Blend & Dronen, 2015Blend, C. K.; Dronen, N. O. (2015). A review of the genus Helicometra Odhner, 1902 (Digenea: Opecoelidae: Plagioporinae) with a key to species including Helicometra overstreeti n. sp. from the cusk-eel Luciobrotula corethromycter Cohen, 1964 (Ophidiiformes: Ophidiidae) from the Gulf of Mexico. Marine Biodiversity. 45(2): 183-270. Helicometra pisanoae Zdzitowiecki, 1998Zdzitowiecki, K. (1998). Helicometra pisanoae sp. n.[Digenea, Opecoelidae], a parasite of a fish, Trematomus hansoni, in the Eastern Antarctic. Acta Parasitologica. 1(43). Helicometra pisodonophi Há, 2012Nguyen Van Ha. 2012. The description of two new species Helicometra pisodonophi sp. n. and Opecoelus haduyngoi sp. n. (Trematoda: Opecoelidae) from marine fishes in Ha Long bay, Vietnam. Journal of Biology, 34(2), 133-138. Helicometra pleurogrammi (Baeva, 1968)Schell, S. C. (1973). Three new species of digenetic trematodes from Puget Sound fishes. Proceedings of the Helminthological Society of Washington. 40: 227-230. Helicometra plovmornini Issaitchikov, 1928 Helicometra pteroisi (Gupta, 1956) Helicometra rakusai Zdzitowiecki, 1997 Helicometra robinsorum Overstreet & Martin, 1974 Helicometra scorpaenae Prudhoe & Bray, 1973 Helicometra sebastis (Sekerak & Arai, 1974) Helicometra selaroides Shen, 1986 Helicometra sinipercae Wang, 1982 Helicometra sprenti Aken'Ova, Cribb & Bray, 2006Aken’Ova, T. O. L.; Cribb, T. H.; Bray, R. A. (2005). Helicometra Odhner, 1902 (Digenea: Opecoelidae) in Australian waters: problems of species identification and a description of H. sprenti n. sp. Systematic Parasitology. 63(1): 17-27. Helicometra tenuifolia Woolcock, 1935 Helicometra torta Linton, 1910
Species later synonymised with species of Helicometra Helicometra antarcticae Holloway & Bier, 1968 Neohelicometra antarcticae (Holloway & Bier, 1968) Helicometra boseli Nagaty, 1956 Helicometra rectisaccus (Fischthal & Kuntz, 1964) Stenopera rectisaccus Fischthal & Kuntz, 1964 Helicometra dalianensis (Li, Qiu & Zhang, 1989) Neohelicometra dalianensis Li, Qiu & Zhang, 1989 Helicometra dorabi (Mamaev & Oshmarin, 1966) Stenopera dorabi Mamaev & Oshmarin, 1966 Helicometra equilata (Manter, 1933) Stenopera equilata Manter, 1933 Helicometra fasciata (Rudolphi, 1819) Helicometra dochmosorchis Manter & Pritchard, 1960 Helicometra epinepheli Yamaguti, 1934 Helicometra flava Stossich, 1903 Helicometra gobii (Stossich, 1883) Helicometra hypodytis Yamaguti, 1934 Helicometra labri (Stossich, 1886) Helicometra markewitschi Pogorel'tseva, 1954 Helicometra marmoratae Nagaty & Abdel-Aal, 1962 Helicometra mutabilis (Stossich, 1902) Helicometra pulchella (Rudolphi, 1819) Helicometra scorpaenae Wang, 1982 Helicometra sinuata (Rudolphi, 1819) Helicometra upapalu Yamaguti, 1970 Helicometra insolita Polyanski, 1955 Neohelicometra insolita (Polyansky, 1955) Helicometra pisodonophi Nguyen Van Ha, 2012 Hamacreadium gymnomuraenae Shen & Li, 2000 Helicometra pleurogrammi (Baeva, 1968) Allostenopera pleurogrammi Baeva, 1968 Helicometra pugetensis Schell, 1973 Neohelicometra pleurogrammi (Baeva, 1968) Helicometra pteroisi (Gupta, 1956) Stenopera pteroisi Gupta, 1956 Helicometra sebastis (Sekerak & Arai, 1974) Neohelicometra sebastis Sekerak & Arai, 1974 Helicometra tenuifolia Woolcock, 1935 Helicometra neosebastodis Crowcroft, 1947 Helicometra torta Linton, 1910 Helicometra pretiosa Bravo-Hollis & Manter, 1957
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