Proisotoma similis Gisin, 1944 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Arthropoda class Collembola order Entomobryomorpha family Isotomidae genus Cryptopygus species Cryptopygus agreni Name Homonyms Proisotoma similis James, 1933 Proisotoma similis Gisin, 1944