Opisthorchiidae is a family of digenean parasitic flatworms. Opisthorchiidae have cosmopolitan distribution.
The most medically important species in the family Opisthorchiidae are Clonorchis sinensis, Opisthorchis viverrini and Opisthorchis felineus, that are causing disease clonorchiasis.
Some species are parasites of economically important fish, e.g. Clarias gariepinus.
There are 13 subfamilies in the family Opisthorchiidae, but their number is inconsistent:
Allogomtiotrematinae - Gupta, 1955; Yamaguti, 1958 - two generaAphallinae - Yamaguti, 1958 - one genusDelphinicolinae - Yamaguti, 1933 - one genusDiasiellinae - Yamaguti, 1958 - one genusMetorchiinae - Luhe, 1909 - four generaOesophagicolinae - Yamaguti, 1933 - one genusOpisthorchiinae - Yamaguti, 1899 - 14 generaPachytrematinae - Railliet, 1919; Ejsmont, 1931 - one genusPlotnikoviinae - Skrjabin, 1945; Skrjabin et Petrov, 1950 - one genusPseudamphimerinae - Skrjabin et Petrov, 1950 - three generaPseudamphistominae - Yamaguti, 1958 - two generaRatziinae - Dollfus, 1929; Price, 1940 - one genusTubangorchiinae - Yamaguti, 1958 - one genusThe family Opisthorchiidae consists of 33 valid genera:
Agrawalotrema Sahay & Sahay, 1988Allogomtiotrema Yamaguti, 1958Amphimerus Barker, 1911Cladocystis Poche, 1926Clonorchis Looss, 1907Cyclorchis Luhe, 1908Delphinicola Yamaguti, 1933Diasiella Travassos, 1949Erschoviorchis Skrjabin, 1945Euamphimerus Yamaguti, 1941Evranorchis Skrjabin, 1944Gomtia Thapar, 1930Hepatiarius Fedzullaev, 1961Holometra Looss, 1899Metametorchis Morozov, 1939Metorchis Looss, 1899Microtrema Kobayashi, 1915Nigerina Baugh, 1958Oesophagicola Yamaguti, 1933Opisthorchis Blanchard, 1895Pachytrema Looss, 1907Parametorchis Skrjabin, 1913Paropisthorchis Stephens, 1912Plotnikovia Skrjabin, 1945Pseudamphimerus Gower, 1940Pseudamphistomum Luhe, 1908Pseudogomtiotrema Gupta & Jain, 1991Ratzia Poche, 1926Satyapalia Lakshminarayana & Hafeezullah, 1974Thaparotrema Gupta, 1955Trionychotrema Chin & Zhang, 1981Tubangorchis Skrjabin, 1944Witenbergia Vaz, 1932
