Leptothorax acervorum var. nigrescens Ruzsky, 1905 Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Animalia phylum Arthropoda class Insecta order Hymenoptera family Formicidae genus Leptothorax species Leptothorax acervorum Name Homonyms Leptothorax acervorum nigrescens Ruzsky, 1905 Leptothorax acervorum var. nigrescens Ruzsky, 1905