Class Hirudinea Lamarck, 1818 - leeches see Subclass Hirudinida Subclass Euhirudinea Lukin, 1956 - true leeches see Subclass Hirudinida Order Arhynchobdellida Blanchard, 1894 Suborder Hirudiniformes Caballero, 1952 Family Haemadipsidae Blanchard, 1893 Genus Chtonobdella Grube, 1866 Chtonobdella bilineata