Digenea is a class of trematodes in the Platyhelminthes phylum, consisting of parasitic flatworms with a syncytial tegument and, usually, two suckers, one ventral and one oral. Adults commonly live within the digestive tract, but occur throughout the organ systems of all classes of vertebrates. Once thought to be related to the Monogenea, it is now recognised that they are closest to the Aspidogastrea and that the Monogenea are more closely allied with the Cestoda. Around 6,000 species have been described to date.
Chrysichthys is a genus of claroteid catfishes native to Africa. Two fossil species are known. Chrysichthys macrotis, Van Neer, 1994, is known from the Miocene-Pliocene of the Albertine Rift in Uganda and Chrysichthys mahengeensis, Murray & Budney, 2003, is known from the Eocene of Mahenge, Tanzania.
Plagiorchiida is a large order of trematodes, synonymous to Echinostomida. They belong to the Digenea, a large subclass of flukes. This order contains relatively few significant parasites of humans.
Echinostomata is a suborder of the parasitic flatworm order Plagiorchiida. The suborder contains numerous species that are parasitic in humans.
Opisthorchiidae is a family of digenean trematodes. Opisthorchiidae have cosmopolitan distribution.
Heterophyidae is a family of intestinal trematodes in the order Plagiorchiida.
Gorgodera amplicava is a species of digenetic trematodes whose definitive hosts include amphibians. Its first intermediate host includes the fingernail clam, which is followed by a second intermediate host, which can be a snail, tadpole, or crayfish. Gorgodera is a distome, meaning its body includes two suckers, one oral and one ventral.
Telorchiidae is a family of trematode parasites.
Heterophyes is a genus of trematodes, or fluke worms, in the family Heterophyidae.
Metorchis is a genus of flatworms belonging to the family Opisthorchiidae.
Philophthalmidae is a family of trematodes in the order Plagiorchiida.
Echinostomatidae is a family of trematodes in the order Plagiorchiida, first described in 1899.
Gorgoderidae is a family of trematodes in the order Plagiorchiida.
Polyangium is a genus of flatworms belonging to the family Microscaphidiidae.
Azygia is a genus of flatworms belonging to the family Azygiidae.
Azygiidae is a family of flatworms belonging to the order Plagiorchiida.
Cryptogonimidae is a family of trematodes belonging to the order Plagiorchiida.
Philophthalmus is a genus of trematodes belonging to the family Philophthalmidae.
Halipegus is a genus of trematode in the family Derogenidae.
