Ephoron nigridorsum (Tshernova, 1934) Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Arthropoda class Insecta order Ephemeroptera family Polymitarcyidae genus Ephoron species Ephoron nigridorsum Name Synonyms Eopolymitarcys nigridorsum Tshernova, 1934 Polymitarcys ladogensis Tiensuu, 1935 Homonyms Ephoron nigridorsum (Tshernova, 1934)