Lamellodiscus is a genus of monopisthocotylean Monogeneans, belonging in the family Diplectanidae; all species of Lamellodiscus are small worms, parasitic on the gills of teleost fish.
The type-species of the genus is Lamellodiscus typicus Johnston & Tiegs, 1922, a parasite of a sparid fish caught in Moreton Bay, Queensland, Australia.
T. Harvey Johnston & Oscar Werner Tiegs, who created the genus in 1922, did not formally explain the etymology of the new name. However, their definition of the new genus "disc well developed, with the accessory locomotory disc (squamodisc) peculiarly modified in such a way as to present numerous concentric rows consisting each of a pair of laterally elongated lamellae" shows that the name refers to the lamellae of the squamodisc (an attachment organ). Such an organ is now called a lamellodisc.
Hosts of Lamellodiscus species are mainly sparids and lethrinids, with very rare cases reported from centracanthids, pomacanthids and pomacentrids.
Species include:
Lamellodiscus acanthopagri Roubal, 1981 Lamellodiscus baeri Oliver, 1974 Lamellodiscus bidens Euzet , 1984 Lamellodiscus butcheri Byrnes, 1987 Lamellodiscus caballeroi Venkatanarsaiah & Kullkarni, 1980 Lamellodiscus cirrusspiralis Byrnes, 1987 Lamellodiscus confusus Amine, Euzet & Kechemir-Issad, 2007 Lamellodiscus corallinus Paperna, 1965 Lamellodiscus coronatus Euzet & Oliver, 1966 Lamellodiscus crampus Neifar, 2008 Lamellodiscus dentexi Aleshkina, 1984 Lamellodiscus donatellae Aquaro, Riva & Galli, 2009 Lamellodiscus drummondi Euzet & Oliver, 1967 Lamellodiscus echeneis (Wagener, 1857)Lamellodiscus elegans Bychowsky, 1957 Lamellodiscus epsilon Yamaguti, 1968 Lamellodiscus ergensi Euzet & Oliver, 1966 Lamellodiscus erythrini Euzet & Oliver, 1966 Lamellodiscus euzeti Diamanka, Boudaya, Toguebaye & Pariselle, 2011 Lamellodiscus falcus Amine, Euzet & Kechemir-Issad, 2006 Lamellodiscus flagellatus Boudaya, Neifar & Euzet, 2009 Lamellodiscus fraternus Bychowsky, 1957 Lamellodiscus furcillatus Kritsky, Jimenez-Ruiz & Sey, 2000 Lamellodiscus furcosus Euzet & Oliver, 1966 Lamellodiscus gracilis Euzet & Oliver, 1966 Lamellodiscus hilii Euzet, 1984 Lamellodiscus ignoratus Palombi, 1943 Lamellodiscus impervius Euzet, 1984 Lamellodiscus indicus Tripathi, 1959 Lamellodiscus kechemirae Amine & Euzet, 2005 Lamellodiscus knoepffleri Oliver, 1969 Lamellodiscus magnicornis Justine & Briand, 2010 Lamellodiscus major Murray, 1931 Lamellodiscus mirandus Euzet & Oliver, 1966 Lamellodiscus mormyri Euzet & Oliver, 1967 Lamellodiscus neifari Amine, Euzet & Kechemir-Issad, 2006 Lamellodiscus niedashui Li, Zhang & Yang, 1995 Lamellodiscus pagrosomi Murray, 1931 Lamellodiscus parisi Oliver, 1969 Lamellodiscus parvicornis Justine & Briand, 2010 Lamellodiscus rastellus Neifar, Euzet & Oliver, 2004 Lamellodiscus sanfilippoi Amine, Neifar & Euzet , 2006 Lamellodiscus sarculus Neifar, Euzet & Oliver, 2004 Lamellodiscus sigillatus Neifar, Euzet & Oliver, 2004 Lamellodiscus spari Zhukov, 1970 Lamellodiscus squamosus Roubal, 1981 Lamellodiscus takitai Ogawa & Eugusa, 1978 Lamellodiscus theroni Amine, Euzet & Kechemir-Issad, 2007 Lamellodiscus toguebayei Diamanka, Neifar, Pariselle & Euzet , 2011 Lamellodiscus tomentosus Amine & Euzet, 2005 Lamellodiscus triacies Diamanka, Neifar, Pariselle & Euzet, 2011 Lamellodiscus tubulicornis Justine & Briand, 2010 Lamellodiscus typicus Johnston & Oscar Werner Tiegs, 1922 Lamellodiscus vaginalis Byrnes, 1987Lamellodiscus verberis Euzet & Oliver, 1967 Lamellodiscus vicinus Diamanka, Neifar, Pariselle & Euzet, 2011 Lamellodiscus virgula Euzet & Oliver, 1967 
