Lamellodiscs are epidermal structures, which are typical of and found only in certain

monogenea Monogeneans, members of the class Monogenea, are a group of ectoparasitic flatworms commonly found on the skin, gills, or fins of fish. They have a direct lifecycle and do not require an intermediate host. Adults are hermaphrodites, meaning they ...

ns of the family

Diplectanidae The Diplectanidae are a family of monopisthocotylean monogeneans. They are all parasitic on the gills of fish (marine or freshwater). Diplectanids are small animals, generally around 1 mm in length. As parasites, they can be extremely numero ...

. There are, typically, two lamellodiscs, one ventral and one dorsal, located on the

haptor The haptor is the attachment organ of the monogeneans, a group of parasitic Platyhelminthes. The haptor is sometimes called opisthaptor (from ''opistho-'': behind) to emphasize that it is located in the posterior part of the body, and to diffe ...

of the monogenean. Lamellodiscs are made up of concentric lamellae embedded in the epidermis. Lamellodiscs are considered as special type of squamodiscs, which are homologous structure found in many diplectanid monogeneans but formed of rows of rodlets instead of lamellae. Lamellodiscs are found in members of the diplectanid

genera Genus (; : genera ) is a taxonomic rank above species and below family as used in the biological classification of living and fossil organisms as well as viruses. In binomial nomenclature, the genus name forms the first part of the binomial s ...

Lamellodiscus ''Lamellodiscus'' is a genus of monopisthocotylean monogeneans in the family Diplectanidae; all species of ''Lamellodiscus'' are small worms, Fish diseases and parasites, parasitic on the gills of teleost fish. The type-species of the genus is ' ...

'' or '' Calydiscoides''. '' Furnestinia echeneis'' is peculiar in that it has a single lamellodisc, not two.

References

{{reflist Platyhelminth anatomy Animal morphology