Class Hirudinea Lamarck, 1818 - leeches see Subclass Hirudinida Subclass Euhirudinea Lukin, 1956 - true leeches see Subclass Hirudinida Order Rhynchobdellida Blanchard, 1894 Family Piscicolidae Johnston, 1865 Subfamily Piscicolinae Llewellyn, 1966 Genus Piscicola Lamarck, 1818 Piscicola geometra (Linnaeus, 1761)