Theristus horridus Of Authors Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Nematoda class Chromadorea order Monhysterida family Xyalidae genus Pseudosteineria species Pseudosteineria horrida Name Homonyms Theristus horridus Of Authors Theristus horridus (Steiner, 1916) Wieser, 1956