| Acanthochasmus Looss, 1901 |
| Acanthochasmus americanus Pérez-Vigueras, 1956 |
| Acanthostomum Looss, 1899 |
| Acanthostomum (Blairium) Brooks & Holcman, 1993 |
| Acanthostomum (Blairium) minimum Stunkard, 1938 |
| Acanthostomum americanum (Pérez-Vigueras, 1956) Herber, 1961 |
| Acanthostomum astorquii Watson, 1976 |
| Acanthostomum caballeroi Peláez & Cruz-Lozano, 1953 |
| Acanthostomum floridense (McCoy, 1928) Price, 1940 |
| Acanthostomum loossi (Pérez-Vigueras, 1956) Groschaft & Barus, 1970 |
| Acanthostomum megacetabulum Thatcher, 1963 |
| Acanthostomum minimum Stunkard, 1938 |
| Acanthostomum nuevoleonensis Caballero & Caballero-Rodríguez, 1964 |
| Acanthostomum scyphocephalum (Braun, 1899) Hughes, Higginbotham & Clary, 1942 |
| Acanthostomum unami Peláez & Cruz-Lozano, 1953 |
| Atrophecaecum Bhalerao, 1940 |
| Atrophecaecum astorquii (Watson, 1976) Lamothe-Argumedo & Ponciano-Rodríguez, 1986 |
| Atrophecaecum caballeroi (Peláez & Cruz-Lozano, 1953) Groschaft & Barus, 1970 |
| Atrophecaecum minimum (Stunkard, 1938) Morozov, 1955 |
| Atrophecaecum nuevoleonensis (Caballero & Caballero-Rodríguez, 1964) Groschaft & Barus, 1970 |