? nigrescens Brady, 1877 Dataset GBIF Backbone Taxonomy Rank UNRANKED Classification kingdom Animalia phylum Arthropoda class Arachnida order Trombidiformes family Halacaridae genus Rhombognathides species Rhombognathides nigrescens Name Homonyms ? nigrescens Schlegel, 1871 ? nigrescens J.K.Townsend, 1837 ? nigrescens Schaeffer, 1904 ? nigrescens Lasch ? nigrescens O.P.-Cambridge, 1912 ? nigrescens Cameron, 1906 ? nigrescens Brady, 1877