| Scaeother Gorham, 1888 |
| Scaeother carbonarius Gorham, 1888 |
| Scaeother opacus Schäffer, 1915 |
| Scaphengis Gorham, 1888 |
| Scaphengis auk Skelley, 1997 |
| Scaphengis dodo Skelley, 1997 |
| Scaphengis emu Skelley, 1997 |
| Scaphengis kakapo Skelley, 1997 |
| Scaphengis kiwi Skelley, 1997 |
| Scaphengis picipes Gorham, 1888 |
| Scaphengis rhea Skelley, 1997 |
| Scaphengis takahe Skelley, 1997 |
| Strongylosomus Chevrolat, 1837 |
| Strongylosomus emys (Lacordaire, 1842) |
| Triplax Herbst, 1793 |
| Triplax alvarengai Johnson, 1967 |
| Triplax championi Gorham, 1888 |
| Triplax coloradana Casey, 1924 |
| Triplax confinis LeConte, 1854 |
| Triplax divisa (Gorham, 1888) |