Orthetrum nigrescens Förster, 1906 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Arthropoda class Insecta order Odonata family Libellulidae genus Orthetrum species Orthetrum julia Name Homonyms Orthetrum nigrescens Förster, 1906 Orthetrum nigrescens Bartenev, 1929