Class Hirudinea Lamarck, 1818 - leeches see Subclass Hirudinida Subclass Euhirudinea Lukin, 1956 - true leeches see Subclass Hirudinida Order Rhynchobdellida Blanchard, 1894 Family Glossiphoniidae Vaillant, 1890 Subfamily Glossiphoniinae Johnson, 1816 Genus Placobdella Blanchard, 1893 1 Placobdella parasitica (Say, 1824)