Subclass Euhirudinea Lukin, 1956 - true leeches see Subclass Hirudinida Order Arhynchobdellida Blanchard, 1894 Suborder Erpobdelliformes Family Cylicobdellidae Sawyer, 1986 1 Subfamily Cylicobdellinae Ringuelet, 1972 2 Subfamily Gastromobdellinae Richardson, 1971