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Pelopscreadium aegyptense n. gen., n. sp. and Pelopscreadium spongiosum (Bray & Cribb, 1998) n. comb., (Digenea: Lepocreadiidae), each from disjunct populations of the Yellow boxfish, Ostracion cubicus Linnaeus (Ostraciidae)



Bianium spongiosum Bray & Cribb, 1998 (Lepocreadiidae), described from the yellow boxfish, Ostracion cubicus Linnaeus (Ostraciidae), off Lizard Island, Queensland, Australia, possesses a combination of the following three morphological features which distinguishes it from all the other species currently assigned to the genus: (1) large internal patches of large cells forming sponge-like pads we have termed “pelops”(“pelop” sing.) laterally in the forebody extending from near the anterior extremity to about the level of the intestinal bifurcation rather than possessing a scoop; (2) ceca that reach to near the posterior extremity where they end blindly without ani; and (3) a vitellarium which is present laterally but not dorsal to the ceca. Based on this we propose the erection of Pelopscreadium n. gen. (Lepocreadiidae) with the assignment of B. spongiosum to this new genus as the type-species, Pelopscreadium spongiosum (Bray & Cribb, 1998) n. comb. Pelopscreadium aegyptense n. sp., also from the yellow boxfish but from the Red Sea off Sharm El-Naga, Egypt, is described as the second member of the new genus because it shares these three characteristics with P. spongiosum.



Platyhelminthes, Australia, Egypt, Lepocreadiidae, Lizard Island, Ostraciidae, Ostracion cubicus, Pelops, Pelopscreadium n. gen., Pelopscreadium aegyptense n. sp., Pelopscreadium spongiosum n. gen, n. comb., Red Sea, Yellow boxfish

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Alvarez-Borrego, J. & Fajer-Avila, E.J. (2006) Identification of platyhelminth parasites of the wild bullseye pufferfish (Sphoeroides annulatus Jenyns, 1853) using invariant digital color correlation. Revista de Biologia Marina y Oceanografia, 41, 129–139.

Bray, R.A. (2005) Family Lepocreadiidae Odhner, 1905. In: Jones, A., Bray, R.A. & Gibson, D.I. (Eds.), Keys to the Trematoda. Vol. 2. CABI Publishing and the Natural History Museum, Wallingford, pp. 545–602.

Bray, R.A. & Cribb, T.H. (1998) Lepocreadiidae (Digenea) of Australian coastal fishes: new species of Opechona Looss, 1907, Lepotrema Ozaki, 1932 and Bianium Stunkard, 1930 and comments on other species reported for the first time or poorly known in Australian waters. Systematic Parasitology, 41, 123–148.

Bray, R.A. & Cribb, T.H. (2012) Reorganisation of the superfamily Lepocreadioidea Odhner, 1905 based on an inferred molecular phylogeny. Systematic Parasitology, 83, 169–177.

Bray, R.A., Cribb, T.H. & Barker, S.C. (1996) Diploproctodaeinae (Digenea: Lepocreadiidae) from the coastal fishes of Queensland, Australia, with a review of the subfamily. Journal of Natural History, 30, 317–366.

Bray, R.A., Cribb, T.H. & Justine, J.-L. (2010) Diploproctodaeum spp. (Digenea, Lepocreadiidae) in Australian and New Caledonian waters including two new species from Tetraodontiformes and new records of related species. Acta Parasitologica, 55, 313–326.

Bush, A.O., Lafferty, K.D., Lotz, J.M. & Shostak, A.W. (1997) Parasitology meets ecology on its own terms: Margolis et al. revisited. Parasitology, 83, 575–583.

Cribb, T.H. & Bray, R.A. (2010) Gut wash, body soak, blender and heat-fixation: approaches to the effective collection, fixation and preservation of trematodes of fishes. Systematic Parasitology, 76, 1–7.

Dronen, N.O., Blend, C.K., Ostrowski de Núñez, M.C., Malhotra, S.K. & Jaiswal, N. (2014) Keys to the species of Neolebouria Gibson, 1976 (Digenea: Opecoelidae: Plagioporinae), with a redescription of Neolebouria truncata (Linton, 1940). Systematic Parasitology, 88, 213–225.

Dyer, W.G., Williams, E.H. Jr. & Williams, L.B. (1988) Digenetic trematodes of marine fishes of Okinawa, Japan. Journal of Parasitology, 74, 638–645.

Fajer-Avila, E.J., Roque, A., Aguilar, G. & Duncan, N. (2004) Patterns of occurrence of the platyhelminth parasites of the wild bullseye puffer (Sphoeroides annulatus) off Sinaloa, Mexico. Journal of Parasitology, 90, 415–418.

Froese, R. & Pauly, D. (Eds.) (2015) FishBase (version 10/2015). Available from: (accessed 26 January 2016)

Garcia, L.S. & Ash, L.R. (1979) Diagnostic Parasitology: Clinical Laboratory Manual. 2nd Ed. The C.V. Mosby Company, London, 182 pp.

Gibson, D.I. (1976) Monogenea and Digenea from fishes. Discovery Reports, 36, 179–266.

Gibson D.I. (2015) Bianium Stunkard, 1930. World Register of Marine Species (WoRMS). Available from: (accessed 26 January 2016)

Gupta, A.N. (1967) Anterovitellosum indicum gen. et. sp. n., from globe fish Tetraodon viridipunctatus (Gunther) from India, with discussion on its systematic position in the subfamily Diploprotodaeinae [sic] Park, 1939. Ciencia, 25, 215–218.

Gupta, A.N. (1968) Studies on the genus Bianium Trematoda (Digenea) with description of three new species and discussion on status of genera Diploproctodaeum La Rue, 1926, Bianium Stunkard, 1930 and Diplocreadium Park, 1939. Japanese Journal of Parasitology, 17, 139–146.

Hafezullah, M. (1970) Lepocreadid trematodes of marine fishes of lndia. Parasitology, 61, 345–356.

La Rue, C.R. (1926) A trematode with two ani. Journal of Parasitology, 12, 207–209.

Lieske, E. & Myers, R. (1994) Collins Pocket Guide. Coral Reef Fishes: Indo-Pacific & Caribbean including the Red Sea. Harper Collins, London, 400 pp.

Linton, E. (1898) Notes on trematode parasites of fishes. Proceedings of the United States National Museum, 20, 507–548.

Linton, E. (1928) Notes on trematode parasites of birds. Proceedings of the United States National Museum, 73, 1–36.

Liu, S.-F. (1997) Two new species of trematodes of marine fishes from Fujian, China (Trematoda: Digenea). Acta Zootaxonomica Sinica, 22, 118–124.

MacCallum, G.A. (1919) Notes on the genus Telorchis and other trematodes. Zoopathologica, 1, 81–98.

Machida, M. & Kuramochi, T. (1999) Digenean trematodes from tetraodontiform fishes from Japanese and adjacent waters. Bulletin of the National Science Museum, Tokyo, 25, 1–25.

Manter, H.W. (1947) Digenetic trematodes of marine fishes of Tortugas, Florida. American Midland Naturalist, 38, 257–416.

Oshmarin, P.G., Mamaev, Y.L. & Parukhin, A.M. (1961) New species of trematodes of the family Diploproctodaeidae Ozaki, 1928. Helminthologia, 3, 254–260. [in Russian]

Ozaki, Y. (1928) On some trematodes with anus. Japanese Journal of Zoology, 2, 5–33.

Pérez-Ponce de León, G., León-Règagnon, V. & Monks, S. (1998) Theletrum lamothei sp. nov. (Digenea), parasite of Echidna nocturna from Cuajiniquil, Guanacaste, and other digenes of marine fishes from Costa Rica. Revista de Biologia Tropical, 46, 345–354.

Quilichini, Y., Ndiaye, P.I., Sène, A., Justine, J.-L., Bray, R.A., Tkach, V.V., Bâ, C.T. & Marchand, B. (2015) Ultrastructural characters of the spermatozoa in digeneans of the genus Bianium Stunkard, 1930 (Digenea, Lepocreadiidae) parasites of fishes: a comparative study of Bianium plicitum and Bianium arabicum. Parasitology Research, 114, 3747–3757.

Reimer, L.W. (1981) Lepocreadiidae (Digenea) aus Fischen der Küste von Moçambique. Angewandte Parasitologie, 22, 204–212.

Rodriguez-Santiago, M.A. & Rosales-Casian, J.A. (2011) Parasite structure of the ocean whitefish Caulolatilus princeps from Baja California, Mexico (East Pacific). Helgoland Marine Research, 65, 197–202.

Sey, O. (1995) Description of Bianium arabicum sp. n. (Trematoda, Lepocreadiidae) from the pufferfish, Lagocephalus lunaris (Bloch et Schneider, 1801) in Kuwait and a review of the genus Bianium Stunkard, 1930. Parasitologia Hungarica, 28, 13–20.

Shen, J.-W. (1990) Description of four new species (Lepocreadiidae and Hemiuridae) and a list of digenetic trematodes of fishes from Yellow Sea. Marine Science Bulletin, 9, 54–63.

Shimazu, T. (1989) Two new species of the genus Diploproctodaeum (Trematoda: Lepocreadiidae: Diploproctodaeinae), with some comments on species in the subfamily Diploproctodaeinae, from Japanese marine fishes. Zoological Science, 6, 579–588.

Sogandares-Bernal, F. & Hutton, R.F. (1958) The status of the trematode genus Bianium Stunkard, 1930, a synonym of Diploproctodaeum La Rue, 1926. Journal of Parasitology, 44, 566–567.

Stunkard, H.W. (1930) Another trematode with two anal openings. Anatomical Record, 47, 363.

Stunkard, H.W. (1931) Further observations on the occurrence of anal openings in digenetic trematodes. Zeitschrift für Parasitenkunde, 3, 713–725.

Yamaguti, S. (1958) Systema Helminthum. Vol. 1. The Digenetic Trematodes of Vertebrates. Part 1. Interscience Publishers Inc., New York, 979 pp.

Yamaguti, S. (1971) Synopsis of Digenetic Trematodes of Vertebrates. Vol. 1. Keigaku Publishing Company, Tokyo, 1074 pp.



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