A revision of Hatschekia Poche, 1902 (Copepoda: Hatschekiidae), parasitic on marine fishes

The genus Hatschekia Poche, 1902 is reduced to 68 species. Interspecies variation is discussed, a key is given, and each species is illustrated. The following species are redescribed: Hatschekia albirubra Wilson, 1913; H. amplicapa Pearse, 1951; H. angulata Pearse, 1951; H. branchiostegi Yamaguti, 1939; H. breviramus Lewis, 1967; H. conifera Yamaguti, 1939; H. exigua Pearse, 1951; H. gerro Leigh-Sharpe, 1936; H. harkema Pearse, 1948; H. insolita Wilson, 1913; H. iridescens Wilson, 1913; H. ischnon Leigh-Sharpe, 1936; H. linearis Wilson, 1913; H. monacanthi Yamaguti, 1939; H. oblonga Wilson, 1913; H. ovalis (Bassett-Smith, 1898); H. parva Pearse, 1951; H. pinguis Wilson, 1908; H. prionoti Pearse, 1947; H. pygmaea T. Scott, 1913; H. quadrabdominalis Yu, 1933; H. uncata Wilson, 1913. The following are considered to be synonyms: H. crassa (Richiardi, 1879) for H. mulli; H. curvata Yamaguti & Yamasu, 1959 for H. quadrabdominalis; H. cylindrica Shiino, 1957 for H. branchiostegi; H. diodontis Yamaguti, 1953 for H. iridescens; H. epinepheli Capart, 1953 for H. cernae; H. labrimixti (Hesse, 1879), H. richiardi Goggio, 1905, and H. subpinguis Brian, 1913 for H. labracis; H. serrana. Pearse, 1952 for H. insolita; and H. trachiuri Yamaguti & Yamasu, 1960 for H. pagrosomi. Hatschekia elongata sensu Capart, 1953 has been renamed H. atagonel nom. nov. and H. labracis sensu Yamaguti, 1939 as H. japonica. nom. nov. A host list by family and genus is included