Opecoeloides is a genus of trematodes in the family Opecoelidae. It has been synonymised with Cymbephallus Linton, 1934Linton, E. (1934). A new genus of trematodes belonging to the subfamily Allocreadiinae. Journal of the Washington Academy of Sciences, 24, 81–83. and Fimbriatus von Wicklen, 1946.von Wicklen, J. H. (1946). The trematode genus Opecoeloides and related genera, with a description of Opecoeloides polynemi n. sp. The Journal of Parasitology, 32(2), 156–163.

Species Opecoeloides belizensis Fischthal, 1977Fischthal, J. H. (1977). Some digenetic trematodes of marine fishes from the Barrier Reef and Reef Lagoon of Belize. Zoologica Scripta, 6, 81–88. Opecoeloides brachyteleus Manter, 1947Manter, H. W. (1947). The digenetic trematodes of marine fishes of Tortugas. American Midland Naturalist, 38, 257–416. Opecoeloides catarinensis Amato, 1983Amato, J. F. R. (1983). Digenetic trematodes of percoid fishes of Florianópolis, southern Brasil. Families Homalometridae, Lepocreadiidae, and Opecoelidae, with the description of seven new species. Revista Brasileira de Biologia, 43(1), 73–98. Opecoeloides columbellae (Pagenstecher, 1862) Jousson & Bartoli, 2000Pagenstecher, H. A. (1862). Untersuchungen über niedere aeethiere aus Cette. Zeitschrift für Wissenschaftliche Zoologie, 12, 265–311.Jousson, O. & Bartoli, P. (2000). The life cycle of Opecoeloides columbellae (Pagenstecher, 1863) n. comb. (Digenea, Opecoelidae): evidence from molecules and morphology. International Journal for Parasitology, 30(6), 747–760. Opecoeloides elongatus Manter, 1947 Opecoeloides eucinostomi (Manter, 1940) von Wicklen, 1946Manter, H. W. (1940). Digenetic trematodes of fishes from the Galapagos Islands and the neighboring Pacific. Allan Hancock Pacific Expeditions, 2, 364–473. Opecoeloides feliciae Martorelli, 1992Martorelli, S. R. (1992). Parasites of commercial shrimps and fishes in Argentine sea: on the adult and metacercaria of Opecoeloides feliciae n. sp. (Digenea: Opecoelidae). Memórias do Instituto Oswaldo Cruz, 87(1), 43–48. Opecoeloides fimbriatus (Linton, 1934) Sogandares-Bernal & Hutton, 1959Sogandares-Bernal, F. & Hutton, R. (1959). Studies on helminth parasites from the coast of Florida. III. Digenetic trematodes of marine fishes from Tampa and Boca Ciega Bays. The Journal of Parasitology, 45(3), 337–346. Opecoeloides fugus Li, Qiu & Zhang, 1988Li, Q., Qiu, Z., & Zhang, R. (1988). Digenetic trematodes of fishes from the Bo-hai Sea, China, 5 (Trematoda: Opecoelidae). Acta Zootaxonomica Sinica, 13(4), 329–336. Opecoeloides furcatus (Rudolphi, 1819) Odhner, 1928Rudolphi, C. A. (1819). Entozoorum Synopsis cui Accedunt Mantissa Duplex et Indices Locupletissimi. Berlin: Sumtibus Augusti Rücker. Opecoeloides manaarensis Gupta, 1956Gupta, N. K. (1956). Studies on the digenetic trematodes of marine fishes from the Gulf of Manaar (India). Research Bulletin of the Panjab University of Science, Zoology, 89, 61–83. Opecoeloides manteri (Hunninen & Cable, 1940) Hunninen & Cable, 1941Hunninen, A. V. & Cable, R. M. (1940). Studies on the life history of Anisoporus manteri sp. nov. (Trematoda: Allocreadiidae). Biological Bulletin, 79, 373–374.Hunninen, A. V. & Cable, R. M. (1941). Studies on the life history of Anisoporus manteri Hunninen and Cable, 1940 (Trematoda: Allocreadiidae). Biological Bulletin, 80(3), 415–428. Opecoeloides melanopteri Amato, 1983 Opecoeloides pedicathedrae Travassos, Teixeira de Freitas & Bührnheim, 1966Travassos, L., Teixeira de Freitas, J. & Bührnheim, P. (1966). Trematodeos de peixes do litoral Capixaba: Opecoeloides pedicathedrae sp. n. parasito de Pe de Banco. Atas da Sociedade de biologia do Rio de Janeiro, 10, 1–4. Opecoeloides polyfimbriatus Read, 1947Read, C. P. (1947). A new trematode, Opecoeloides polyfimbriatus n. sp., from the lizard fish, Synodus foetens. Journal of Parasitology, 33(3), 231–233. Opecoeloides polynemi von Wicklen, 1946 Opecoeloides stenosomae Amato, 1983 Opecoeloides thyrinopsi (Manter, 1940) Skrjabin & Petrov, 1958Skrjabin, K. I. & Petrov, A. M. (1958). Subfamily Opecoelidae Stunkard. Osnovy Trematodologii, 15, 94–329. Opecoeloides vitellosus (Linton, 1900) von Wicklen, 1946Linton, E. (1900). Fish parasites collected at Woods Hole in 1898. Bulletin of the United States Fish Commission, 19, 267–304.

Species later synonymised with species of Opecoeloides Opecoeloides columbellae (Pagenstecher, 1862) Jousson & Bartoli, 2000 Cercaria columbellae Pagenstecher, 1862 Opecoeloides eucinostomi (Manter, 1940) von Wicklen, 1946 Anisoporus eucinostomi Manter, 1940 Opecoeloides fimbriatus (Linton, 1934) Sogandares-Bernal & Hutton, 1959 Cymbephallus fimbriatus Linton, 1934 Opecoeloides furcatus (Rudolphi, 1819) Odhner, 1928 Distoma furcatum Rudolphi, 1819 Opecoeloides manteri (Hunninen & Cable, 1940) Hunninen & Cable, 1941 Anisoporus manteri Hunninen & Cable, 1940 Opecoeloides thyrinopsi (Manter, 1940) Skrjabin & Petrov, 1958 Anisoporus thyrinopsi Manter, 1940 Opecoeloides vitellosus (Linton, 1900) von Wicklen, 1946 Cymbephallus vitellosus (Linton, 1900) Linton, 1934Linton, E. (1934). A new genus of trematodes belonging to the subfmily Allocreadiinae. Journal of the Washington Academy of Sciences, 24, 81–83. Distomum vitellosum Linton, 1900

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