Species
There are 15 species: ''Cardiodectes medusaeus'' (Wilson C.B., 1908) is a synonym of ''Cardiodectes bellottii''.References
* Uyeno, D. 2013: Two new species of ''Cardiodectes'' Wilson, 1917 (Copepoda: Siphonostomatoida: Pennellidae) from gobiid fishes (Actinopterygii: Perciformes) in the western Pacific Ocean. Zootaxa 3664(3), pages 301–311, * Uyeno, D.; Nagasawa, K. 2010: Three new species of the family Pennellidae (Copepoda: Siphonostomatoida) from gobiid fishes (Actinopterygii: Perciformes) in coastal waters of the western Pacific Ocean. Zootaxa, 2687, pages 29–44 Siphonostomatoida Copepod genera {{copepod-stub