Hystrichis cygni (Molin, 1858) Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Nematoda order Dioctophymatida family Dioctophymatidae genus Hystrichis species Hystrichis cygni Name Synonyms Echinocephalus cygni Molin, 1858 Hystrichis pachicephalus Molin, 1861 Homonyms Hystrichis cygni (Molin, 1858)