Genus Ploesoma Herrick 1885 Ploesoma Ploesoma hudsoni Ploesoma hudsoni Ploesoma hudsoni Ploesoma triacanthum Ploesoma triacanthum Ploesoma triacanthum
freshwater life procaryota algae plants protists "worms" molluscs arthropods marine life mediterranean tropical misc impresssum plingfactory