Glossiphoniidae Vaillant, 1890
Helobdella adiastola Ringuelet, 1972
Helobdella bancrofti Best, 1931
Helobdella californica Kutschera, 1988
Helobdella conchata (Caballero, 1941)
Helobdella fusca (Castle, 1900)
Helobdella melananus Lai & Chang, 2009
Helobdella moorei Caballero, 1933
Helobdella nigropunctata (Dequal, 1917)
Helobdella nilae Negm-Eldin et al., 2000
Helobdella octatestisaca Lai & Chang, 2009
Helobdella papillata (Moore, 1906)
Helobdella papillornata Govedich & Davies, 1998
Helobdella punctatolineata Moore, 1939
Helobdella robusta Shankland, Bissen & Weisblat, 1992
Helobdella stagnalis (Linnaeus, 1758)
Helobdella transversa Sawyer, 1972
Helobdella triserialis (E. Blanchard, 1849)
