| Homalotylus californicus Girault, 1915 |
| Homalotylus cockerelli Timberlake, 1919 |
| Homalotylus flaminius (Dalman, 1820) |
| Homalotylus hemipterinus (De Stefani, 1898) |
| Homalotylus mexicanus Timberlake, 1919 |
| Homalotylus microgaster Girault, 1917 |
| Homalotylus obscurus Howard, 1885 |
| Homalotylus orci Girault, 1917 |
| Homalotylus scymnae (Shimer, 1869) |
| Homalotylus scymni Timberlake, 1919 |
| Homalotylus terminalis (Say, 1829) |
| Howardia Dalla Torre, 1897 |
| Howardiella Dalla Torre, 1898 |
| Hunterellus Howard, 1908 |
| Islawes Noyes & Woolley, 1994 |
| Islawes azteca Noyes & Woolley, 1994 |
| Isodromus Howard, 1887 |
| Isodromus iceryae Howard, 1887 |
| Isodromus nigriaxillae (Girault, 1915) |
| Isodromus pulcher Howard, 1917 |