PseudocycnidaePseudocycnidae is a family of marine copepods in the order Siphonostomatoida.Taxonomy and historyThis grouping was first described by Charles Branch Wilson in 1922 as Pseudocycninae, a subfamily of Dichelesthiidae, though Wilson would later elevate the group to the rank of family in 1932.EcologyMembers of this family are common parasites of marine teleosts, particularly fish in the family Scombridae.ClassificationThis family includes the following genera:Cybicola Bassett-Smith, 1898Pseudocycnus Heller, 1865