Acarus gracilis Nitzsch, 1818 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Arthropoda class Arachnida order Sarcoptiformes family Pteronyssidae genus Pteronyssus species Pteronyssus gracilis Name Homonyms Acarus gracilis Hughes, 1957 Acarus gracilis Nitzsch, 1818