Aulodrilus pigueti Kowalewski, 1914 (additional source)
Bothrioneurum americanum Beddard, 1894 (additional source)
Epirodrilus antipodum Černosvitov, 1939 (redescription)
Haplolumbriculus insectivorus Omodeo (in litt.): Omodeo, 1958 accepted as Villiersidrilus guanivorus (Omodeo, 1987) accepted as Omodeodrilus guanivorus (Omodeo, 1987) (source of synonymy)
Haplotaxis aedeochaeta Brinkhurst & Marchese, 1987 (original description)
Haplotaxis ascaridoides Michaelsen, 1905 (additional source)
Haplotaxis carnivorus Omodeo (in litt.): Omodeo, 1958 accepted as Haplotaxis villiersi Omodeo, 1987 (additional source)
Haplotaxis dubius (Hrabĕ, 1931) (additional source)
Haplotaxis gastrochaetus Yamaguchi, 1953 (additional source)
Haplotaxis gordioides (Hartmann in Oken, 1819) (additional source)
Haplotaxis heterogyne Benham, 1903 (additional source)
Haplotaxis villiersi Omodeo, 1987 (additional source)
Isochaetides lacustris (Černosvitov, 1939) (redescription)
Limnodrilus variesetosus Brinkhurst, 1979 accepted as Limnodrilus udekemianus Claparède, 1862 (additional source)
Monopylephorus moleti Brinkhurst & Machese, 1987 (original description)
Paranadrilus descolei Gavrilov, 1955 (redescription)
Peloscolex coiree Medeiros & Neves, 1982 (additional source)
Potamothrix bavaricus (Oschmann, 1913) (additional source)
Tubifex tubifex (Müller, 1774) (additional source)
Villiersia guanivora Omodeo, 1987 accepted as Omodeodrilus guanivorus (Omodeo, 1987) (additional source)

Argentina for Monopylephorus moleti Brinkhurst & Machese, 1987 
Parana River for Haplotaxis aedeochaeta Brinkhurst & Marchese, 1987 

Holotype USNM 102739, geounit Argentina, identified as Monopylephorus moleti Brinkhurst & Machese, 1987
Holotype USNM 102752, geounit Parana River, identified as Haplotaxis aedeochaeta Brinkhurst & Marchese, 1987

 Etymology

 for Haplotaxis aedeochaeta Brinkhurst & Marchese, 1987

From aidoio, Greek, a euphemism for genital, and chaite, Greek, long hair, for the elongate, hair-like genital chaetae. [details]

 Etymology

 for Monopylephorus moleti Brinkhurst & Machese, 1987

Named for Mr. Ulices Molet who greatly assisted M. Marchese with the field collection of material used in this study. [details]