Sphaeridium bimaculatum Ragusa, 1891 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Arthropoda class Insecta order Coleoptera family Hydrophilidae genus Sphaeridium species Sphaeridium lunatum Name Homonyms Sphaeridium bimaculatum Kuwert, 1890 Sphaeridium bimaculatum Ragusa, 1891