Capillariidae
Eucoleus aerophilus (Creplin, 1839)
Eucoleus annulatus (Molin, 1858)
Eucoleus bacillatus (Eberth, 1863)
Eucoleus baskakowi Schulz, 1929
Eucoleus boehemi (Supperer, 1953)
Eucoleus contortus (Creplin, 1839)
Eucoleus dispar (Dujardin, 1845)
Eucoleus dubius (Travassos, 1917)
Eucoleus garfiai (Gallego & Mas-Coma, 1975)
Eucoleus gastricus (Baylis, 1926)
Eucoleus obtusiuscula (Rudolphi, 1819)
Eucoleus oesophagicola (Soltys, 1952)
Eucoleus perforans (Kotlan & Oross, 1931)
Eucoleus schvalovoj Kontrimavichus, 1963
Eucoleus spiralis Molin, 1858
Eucoleus tenuis Dujardin, 1845
Eucoleus vanelli Rudolphi, 1819
